{"id":48982,"date":"2025-07-30T14:23:03","date_gmt":"2025-07-30T06:23:03","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/48982.html"},"modified":"2025-07-30T14:23:03","modified_gmt":"2025-07-30T06:23:03","slug":"%e5%8f%8d%e5%b0%84","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/48982.html","title":{"rendered":"\u53cd\u5c04......"},"content":{"rendered":"<h2>\u521d\u8bc6\u53cd\u5c04<\/h2>\n<h3>\u6982\u8ff0&#xff1a;<\/h3>\n<ul>\n<li>\u53cd\u5c04\u662fjava\u8bed\u8a00\u63d0\u4f9b\u7684\u4e00\u79cd\u52a8\u6001\u83b7\u53d6\u5bf9\u8c61\u5c5e\u6027\u548c\u65b9\u6cd5\u7684\u673a\u5236\u3002<\/li>\n<\/ul>\n<h3>\u67e5\u770b\u6709Class\u5b9e\u4f8b\u7684\u5c5e\u6027<\/h3>\n<ul>\n<li>\u7c7b<br \/>\nClass class1 &#061; Object.class;<\/li>\n<li>\u63a5\u53e3<br \/>\nClass class2 &#061; Comparable.class;<\/li>\n<li>\u6570\u7ec4<br \/>\nClass class3 &#061; String[].class;<\/li>\n<li>\u679a\u4e3e<br \/>\nClass class4 &#061; Season.class;<\/li>\n<li>\u6ce8\u89e3<br \/>\nClass class5 &#061; SuppressWarnings.class;<\/li>\n<li>\u57fa\u672c\u6570\u636e\u7c7b\u578b<br \/>\nClass class6 &#061; int.class;<\/li>\n<li>void<br \/>\nClass class7 &#061; void.class;<\/li>\n<\/ul>\n<h3>\u83b7\u53d6class\u5b9e\u4f8b<\/h3>\n<ul>\n<li>\u83b7\u53d6class\u5b9e\u4f8b\u7684\u65b9\u6cd5&#xff1a;\n<ul>\n<li>\u8981\u6c42\u7f16\u8bd1\u65f6\u671f\u5df2\u77e5\u7c7b\u578b \u7c7b\u540d\u79f0.Class<\/li>\n<li>\u83b7\u53d6\u5bf9\u8c61\u7684\u8fd0\u884c\u65f6\u7c7b\u578b obj.getClass()<\/li>\n<li>\u83b7\u53d6\u7f16\u8bd1\u671f\u95f4\u672a\u77e5\u7c7b\u578b Class.forName(\u201c\u5305\u540d.\u7c7b\u540d\u201d)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>Class\u7c7b\u7684\u5e38\u7528\u65b9\u6cd5<\/h3>\n<ul>\n<li>Class.forName \u8fd4\u56de\u6307\u5b9a\u7c7b\u540d name \u7684 Class \u5bf9\u8c61<\/li>\n<li>Class.newInstance() \u8fd4\u56de\u8be5Class\u5bf9\u8c61\u6240\u8868\u793a\u7684\u7c7b\u6216\u63a5\u53e3\u7684\u5b9e\u4f8b<\/li>\n<li>Class.getClassLoader() \u8fd4\u56de\u8be5Class\u5bf9\u8c61\u6240\u8868\u793a\u7684\u7c7b\u6216\u63a5\u53e3\u7684\u7c7b\u52a0\u8f7d\u5668<\/li>\n<\/ul>\n<p><span class=\"token annotation punctuation\">&#064;Test<\/span><br \/>\n<span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">test02<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">Exception<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/\u8fd4\u56de\u6307\u5b9a\u7c7b\u540d  name  \u7684  Class  \u5bf9\u8c61<\/span><br \/>\n    <span class=\"token class-name\">Class<\/span> class1 <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">Class<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">forName<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;com.jiazhong.L_\u53cd\u5c04\u7684\u4f7f\u7528.test01.Person&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>class1<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/\u8c03\u7528\u7f3a\u7701\u6784\u9020\u51fd\u6570&#xff0c;\u8fd4\u56de\u8be5Class\u5bf9\u8c61\u7684\u4e00\u4e2a\u5b9e\u4f8b<\/span><br \/>\n    <span class=\"token class-name\">Class<\/span> class2 <span class=\"token operator\">&#061;<\/span> class1<span class=\"token punctuation\">.<\/span><span class=\"token function\">newInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getClass<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u5c31\u76f8\u5f53\u4e8e new<\/span><br \/>\n    <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>class2<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/\u8fd4\u56de\u8be5\u7c7b\u7684\u7c7b\u52a0\u8f7d\u5668<\/span><br \/>\n    <span class=\"token class-name\">ClassLoader<\/span> classLoader <span class=\"token operator\">&#061;<\/span> class1<span class=\"token punctuation\">.<\/span><span class=\"token function\">getClassLoader<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>classLoader<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<ul>\n<li>\u67e5\u770b\u67d0\u4e2a\u7c7b\u7684\u7c7b\u52a0\u8f7d\u5668\u5bf9\u8c61\n<ul>\n<li>\u83b7\u53d6\u9ed8\u8ba4\u7cfb\u7edf\u52a0\u8f7d\u5668 ClassLoader.getSystemClassLoader()<\/li>\n<li>\u83b7\u53d6\u67d0\u4e2a\u7c7b\u7684\u7c7b\u52a0\u8f7d\u5668\u5bf9\u8c61 Class.getClassLoader()<\/li>\n<li>\u83b7\u53d6\u67d0\u4e2a\u7c7b\u7684\u7236\u7c7b\u52a0\u8f7d\u5668\u5bf9\u8c61 ClassLoader.getParent() \u3010\u5982\u679c\u662f\u6839\u52a0\u8f7d\u5668&#xff0c;\u5219\u8fd4\u56denull\u3011<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>    <span class=\"token annotation punctuation\">&#064;Test<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">test01<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">ClassNotFoundException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/\u83b7\u53d6\u9ed8\u8ba4\u7684\u7cfb\u7edf\u52a0\u8f7d\u5668<\/span><br \/>\n        <span class=\"token class-name\">ClassLoader<\/span> classLoader <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">ClassLoader<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getSystemClassLoader<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>classLoader<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u67e5\u770b\u67d0\u4e2a\u7c7b\u662f\u54ea\u4e2a\u7c7b\u52a0\u8f7d\u5668\u52a0\u8f7d\u7684<\/span><br \/>\n        <span class=\"token class-name\">ClassLoader<\/span> classLoader1 <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">Class<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">forName<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;com.jiazhong.L_\u53cd\u5c04\u7684\u4f7f\u7528.test01.Person&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getClassLoader<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>classLoader1<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">ClassLoader<\/span> classLoader2 <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">Class<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">forName<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;java.lang.Object&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getClassLoader<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>classLoader2<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u83b7\u53d6\u67d0\u4e2a\u7c7b\u52a0\u8f7d\u5668\u7684\u7236\u52a0\u8f7d\u5668<\/span><br \/>\n        <span class=\"token class-name\">ClassLoader<\/span> classLoader3 <span class=\"token operator\">&#061;<\/span> classLoader<span class=\"token punctuation\">.<\/span><span class=\"token function\">getParent<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>classLoader3<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<h3>\u53cd\u5c04\u7684\u4f7f\u7528<\/h3>\n<h4>\u521b\u5efa\u8fd0\u884c\u65f6\u7c7b\u7684\u5bf9\u8c61 newInstance<\/h4>\n<p>  <span class=\"token annotation punctuation\">&#064;Test<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">test01<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">Exception<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">Class<\/span> clazz <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">Person<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u521b\u5efaPerson\u7c7b\u7684\u5b9e\u4f8b<\/span><br \/>\n        <span class=\"token class-name\">Person<\/span> person <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Person<\/span><span class=\"token punctuation\">)<\/span> clazz<span class=\"token punctuation\">.<\/span><span class=\"token function\">newInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>person<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<h4>\u83b7\u53d6\u8fd0\u884c\u65f6\u7c7b\u7684\u5b8c\u6574\u7684\u7ed3\u6784<\/h4>\n<ul>\n<li>\u83b7\u53d6\u5c5e\u6027\n<ul>\n<li>getFields() \u83b7\u53d6\u5230\u8fd0\u884c\u65f6\u7c7b\u672c\u8eab\u53ca\u5176\u6240\u6709\u7684\u7236\u7c7b\u4e2d\u58f0\u660e\u4e3apublic\u6743\u9650\u7684\u5c5e\u6027<\/li>\n<li>getDeclaredFields()\u83b7\u53d6\u5f53\u524d\u8fd0\u884c\u65f6\u7c7b\u4e2d\u58f0\u660e\u7684\u6240\u6709\u5c5e\u6027<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span class=\"token annotation punctuation\">&#064;Test<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">test02<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">Class<\/span> clazz <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">Person<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u83b7\u53d6\u6240\u6709\u7684\u5c5e\u6027\u548c\u7ec6\u8282<\/span><br \/>\n        <span class=\"token comment\">\/\/getFields():\u83b7\u53d6\u5230\u8fd0\u884c\u65f6\u7c7b\u672c\u8eab\u53ca\u5176\u6240\u6709\u7684\u7236\u7c7b\u4e2d\u58f0\u660e\u4e3apublic\u6743\u9650\u7684\u5c5e\u6027<\/span><br \/>\n        <span class=\"token class-name\">Field<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> fields <span class=\"token operator\">&#061;<\/span> clazz<span class=\"token punctuation\">.<\/span><span class=\"token function\">getFields<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u8fdb\u884c\u904d\u5386<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Field<\/span> f <span class=\"token operator\">:<\/span> fields<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>f<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/getDeclaredFields():\u83b7\u53d6\u5f53\u524d\u8fd0\u884c\u65f6\u7c7b\u4e2d\u58f0\u660e\u7684\u6240\u6709\u5c5e\u6027<\/span><br \/>\n        <span class=\"token class-name\">Field<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> declaredFields <span class=\"token operator\">&#061;<\/span> clazz<span class=\"token punctuation\">.<\/span><span class=\"token function\">getDeclaredFields<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Field<\/span> f <span class=\"token operator\">:<\/span> declaredFields<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>f<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<ul>\n<li>getModifiers() \u83b7\u53d6\u6743\u9650\u4fee\u9970\u7b26<\/li>\n<li>getType() \u83b7\u53d6\u5c5e\u6027\u7684\u7c7b\u578b<\/li>\n<li>getName() \u83b7\u53d6\u53d8\u91cf\u540d<\/li>\n<\/ul>\n<p>    <span class=\"token annotation punctuation\">&#064;Test<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">test03<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">Class<\/span> clazz <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">Person<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">Field<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> fields <span class=\"token operator\">&#061;<\/span> clazz<span class=\"token punctuation\">.<\/span><span class=\"token function\">getDeclaredFields<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Field<\/span> f <span class=\"token operator\">:<\/span> fields<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token comment\">\/\/1.\u6743\u9650\u4fee\u9970\u7b26<\/span><br \/>\n            <span class=\"token keyword\">int<\/span> modifiers <span class=\"token operator\">&#061;<\/span> f<span class=\"token punctuation\">.<\/span><span class=\"token function\">getModifiers<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Modifier<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">toString<\/span><span class=\"token punctuation\">(<\/span>modifiers<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token comment\">\/\/2.\u6570\u636e\u7c7b\u578b<\/span><br \/>\n            <span class=\"token class-name\">Class<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token operator\">?<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> type <span class=\"token operator\">&#061;<\/span> f<span class=\"token punctuation\">.<\/span><span class=\"token function\">getType<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>type<span class=\"token punctuation\">.<\/span><span class=\"token function\">getName<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token comment\">\/\/3.\u53d8\u91cf\u540d<\/span><br \/>\n            <span class=\"token class-name\">String<\/span> name <span class=\"token operator\">&#061;<\/span> f<span class=\"token punctuation\">.<\/span><span class=\"token function\">getName<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>name<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<ul>\n<li>\u83b7\u53d6\u6240\u6709\u7684\u65b9\u6cd5\u4ee5\u53ca\u76f8\u5173\u7684\u7ec6\u8282\n<ul>\n<li>getMethods() \u83b7\u53d6\u5230\u8fd0\u884c\u65f6\u7c7b\u672c\u8eab\u53ca\u5176\u6240\u6709\u7684\u7236\u7c7b\u4e2d\u58f0\u660e\u4e3apublic\u6743\u9650\u7684\u65b9\u6cd5<\/li>\n<li>getDeclaredMethods() \u83b7\u53d6\u5f53\u524d\u8fd0\u884c\u65f6\u7c7b\u4e2d\u58f0\u660e\u7684\u6240\u6709\u65b9\u6cd5<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">test04<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">Class<\/span> clazz <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">Person<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/getMethods():\u83b7\u53d6\u5230\u8fd0\u884c\u65f6\u7c7b\u672c\u8eab\u53ca\u5176\u6240\u6709\u7684\u7236\u7c7b\u4e2d\u58f0\u660e\u4e3apublic\u6743\u9650\u7684\u65b9\u6cd5<\/span><br \/>\n        <span class=\"token class-name\">Method<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> methods <span class=\"token operator\">&#061;<\/span> clazz<span class=\"token punctuation\">.<\/span><span class=\"token function\">getMethods<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Method<\/span> m <span class=\"token operator\">:<\/span> methods<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>m<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8211;&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/getDeclaredMethods():\u83b7\u53d6\u5f53\u524d\u8fd0\u884c\u65f6\u7c7b\u4e2d\u58f0\u660e\u7684\u6240\u6709\u65b9\u6cd5<\/span><br \/>\n        <span class=\"token class-name\">Method<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> declaredMethods <span class=\"token operator\">&#061;<\/span> clazz<span class=\"token punctuation\">.<\/span><span class=\"token function\">getDeclaredMethods<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Method<\/span> m <span class=\"token operator\">:<\/span> declaredMethods<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>m<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<ul>\n<li>\u6ce8\u89e3\u4fe1\u606f<\/li>\n<li>getAnnotations() \u83b7\u53d6\u5f53\u524d\u8fd0\u884c\u65f6\u7c7b\u4e2d\u58f0\u660e\u7684\u6240\u6709\u6ce8\u89e3<\/li>\n<li>getModifiers()  \u6743\u9650\u4fee\u9970\u7b26<\/li>\n<li>getReturnType()  \u8fd4\u56de\u503c\u7c7b\u578b<\/li>\n<li>getName()  \u65b9\u6cd5\u540d<\/li>\n<li>parameterTypes  (\u5f62\u53c2\u7c7b\u578b1 \u53c2\u65701,\u5f62\u53c2\u7c7b\u578b2 \u53c2\u65702,\u2026)<\/li>\n<li>getExceptionTypes()  throws \u5f02\u5e38\u7c7b\u578b1,\u2026{}<\/li>\n<\/ul>\n<p><span class=\"token annotation punctuation\">&#064;Test<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">test05<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">Class<\/span> clazz <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">Person<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">Method<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> declaredMethods <span class=\"token operator\">&#061;<\/span> clazz<span class=\"token punctuation\">.<\/span><span class=\"token function\">getDeclaredMethods<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Method<\/span> m <span class=\"token operator\">:<\/span> declaredMethods<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token comment\">\/\/ 1.\u83b7\u53d6\u65b9\u6cd5\u58f0\u660e\u7684\u6ce8\u89e3<\/span><br \/>\n            <span class=\"token class-name\">Annotation<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> annotations <span class=\"token operator\">&#061;<\/span> m<span class=\"token punctuation\">.<\/span><span class=\"token function\">getAnnotations<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Annotation<\/span> a <span class=\"token operator\">:<\/span> annotations<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>a<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token comment\">\/\/ 2.\u6743\u9650\u4fee\u9970\u7b26<\/span><br \/>\n            <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Modifier<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">toString<\/span><span class=\"token punctuation\">(<\/span>m<span class=\"token punctuation\">.<\/span><span class=\"token function\">getModifiers<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token comment\">\/\/ 3.\u8fd4\u56de\u503c\u7c7b\u578b<\/span><br \/>\n            <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>m<span class=\"token punctuation\">.<\/span><span class=\"token function\">getReturnType<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getName<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token comment\">\/\/ 4.\u65b9\u6cd5\u540d<\/span><br \/>\n            <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>m<span class=\"token punctuation\">.<\/span><span class=\"token function\">getName<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token comment\">\/\/ 5.\u5f62\u53c2\u5217\u8868<\/span><br \/>\n            <span class=\"token class-name\">Class<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token operator\">?<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> parameterTypes <span class=\"token operator\">&#061;<\/span> m<span class=\"token punctuation\">.<\/span><span class=\"token function\">getParameterTypes<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Class<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token operator\">?<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> parameterType <span class=\"token operator\">:<\/span> parameterTypes<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>parameterType<span class=\"token punctuation\">.<\/span><span class=\"token function\">getName<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token comment\">\/\/ 6.\u5f02\u5e38\u5217\u8868<\/span><br \/>\n            <span class=\"token class-name\">Class<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token operator\">?<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> exceptionTypes <span class=\"token operator\">&#061;<\/span> m<span class=\"token punctuation\">.<\/span><span class=\"token function\">getExceptionTypes<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Class<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token operator\">?<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> exceptionType <span class=\"token operator\">:<\/span> exceptionTypes<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>exceptionType<span class=\"token punctuation\">.<\/span><span class=\"token function\">getName<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<ul>\n<li>\u83b7\u53d6\u5176\u4ed6\u7ed3\u6784(\u6784\u9020\u5668\u3001\u7236\u7c7b\u3001\u63a5\u53e3\u3001\u5305\u3001\u6ce8\u89e3\u7b49)\n<ul>\n<li>getSuperclass()\u83b7\u53d6\u8fd0\u884c\u65f6\u7c7b\u7684\u7236\u7c7b<\/li>\n<li>getInterfaces()\u83b7\u53d6\u8fd0\u884c\u65f6\u7c7b\u5b9e\u73b0\u7684\u63a5\u53e3<\/li>\n<li>getPackage()\u83b7\u53d6\u8fd0\u884c\u65f6\u7c7b\u6240\u5728\u7684\u5305<\/li>\n<li>getGenericSuperclass()\u83b7\u53d6\u8fd0\u884c\u65f6\u7c7b\u7684\u5e26\u6cdb\u578b\u7684\u7236\u7c7b<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p> <span class=\"token annotation punctuation\">&#064;Test<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">test06<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">Exception<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/1. getSuperclass()\u83b7\u53d6\u8fd0\u884c\u65f6\u7c7b\u7684\u7236\u7c7b<\/span><br \/>\n        <span class=\"token class-name\">Class<\/span> clazz <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">Class<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">forName<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;com.jiazhong.L_\u53cd\u5c04\u7684\u4f7f\u7528.test02.Person&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">Class<\/span> superclass <span class=\"token operator\">&#061;<\/span> clazz<span class=\"token punctuation\">.<\/span><span class=\"token function\">getSuperclass<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>superclass<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/2. getInterfaces()\u83b7\u53d6\u8fd0\u884c\u65f6\u7c7b\u5b9e\u73b0\u7684\u63a5\u53e3<\/span><br \/>\n        <span class=\"token class-name\">Class<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> interfaces <span class=\"token operator\">&#061;<\/span> clazz<span class=\"token punctuation\">.<\/span><span class=\"token function\">getInterfaces<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Class<\/span> c <span class=\"token operator\">:<\/span> interfaces<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>c<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token comment\">\/\/3. getPackage()\u83b7\u53d6\u8fd0\u884c\u65f6\u7c7b\u6240\u5728\u7684\u5305<\/span><br \/>\n        <span class=\"token class-name\">Package<\/span> aPackage <span class=\"token operator\">&#061;<\/span> clazz<span class=\"token punctuation\">.<\/span><span class=\"token function\">getPackage<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>aPackage<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/4. getGenericSuperclass()\u83b7\u53d6\u8fd0\u884c\u65f6\u7c7b\u7684\u5e26\u6cdb\u578b\u7684\u7236\u7c7b<\/span><br \/>\n        <span class=\"token class-name\">Type<\/span> genericSuperclass <span class=\"token operator\">&#061;<\/span> clazz<span class=\"token punctuation\">.<\/span><span class=\"token function\">getGenericSuperclass<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>genericSuperclass<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<ul>\n<li>\u83b7\u53d6\u8fd0\u884c\u65f6\u7c7b\u7684\u7236\u7c7b\u7684\u6cdb\u578b (\u96be)<\/li>\n<\/ul>\n<p> <span class=\"token annotation punctuation\">&#064;Test<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">test07<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">Exception<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">Class<\/span> clazz <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">Class<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">forName<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;com.jiazhong.L_\u53cd\u5c04\u7684\u4f7f\u7528.test02.Person&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/getGenericSuperclass()\u83b7\u53d6\u5e26\u6cdb\u578b\u7684\u7236\u7c7b&#xff08;Type\u662f\u4e00\u4e2a\u63a5\u53e3&#xff0c;Class\u5b9e\u73b0\u4e86\u6b64\u63a5\u53e3<\/span><br \/>\n        <span class=\"token class-name\">Type<\/span> genericSuperclass <span class=\"token operator\">&#061;<\/span> clazz<span class=\"token punctuation\">.<\/span><span class=\"token function\">getGenericSuperclass<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u5f3a\u8f6c\u76ee\u524d\u5f97\u5230\u7684\u6cdb\u578b\u7684\u7c7b\u578b<\/span><br \/>\n        <span class=\"token class-name\">ParameterizedType<\/span> parameterizedType <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">ParameterizedType<\/span><span class=\"token punctuation\">)<\/span> genericSuperclass<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u8c03\u7528getActualTypeArguments\u83b7\u53d6\u6cdb\u578b\u7684\u53c2\u6570&#xff0c;\u83b7\u53d6\u5230\u7684\u6cdb\u578b\u53c2\u6570\u53ef\u80fd\u662f\u4e00\u4e2a\u6570\u7ec4<\/span><br \/>\n        <span class=\"token class-name\">Type<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> actualTypeArguments <span class=\"token operator\">&#061;<\/span> parameterizedType<span class=\"token punctuation\">.<\/span><span class=\"token function\">getActualTypeArguments<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>actualTypeArguments<span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getTypeName<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<h4>\u8c03\u7528\u6307\u5b9a\u5c5e\u6027\u548c\u65b9\u6cd5<\/h4>\n<p><span class=\"token keyword\">package<\/span> <span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>jiazhong<span class=\"token punctuation\">.<\/span><\/span>L_\u53cd\u5c04\u7684\u4f7f\u7528<span class=\"token punctuation\">.<\/span>test02<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>junit<span class=\"token punctuation\">.<\/span>jupiter<span class=\"token punctuation\">.<\/span>api<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Test<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>lang<span class=\"token punctuation\">.<\/span>reflect<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Constructor<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>lang<span class=\"token punctuation\">.<\/span>reflect<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Field<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>lang<span class=\"token punctuation\">.<\/span>reflect<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Method<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ReflectTest<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/********************\u5982\u4e0b\u662f\u8c03\u7528\u6307\u5b9a\u7684\u5c5e\u6027************************<\/span><br \/>\n    <span class=\"token comment\">\/*<br \/>\n     * \u53cd\u5c04\u7684\u5e94\u75283-1&#xff1a;\u8c03\u7528\u6307\u5b9a\u7684\u5c5e\u6027<br \/>\n     *<br \/>\n     * *\/<\/span><br \/>\n    <span class=\"token comment\">\/\/public int age &#061; 1;<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Test<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">test01<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">Exception<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">Class<\/span> clazz <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">Person<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">Person<\/span> person <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Person<\/span><span class=\"token punctuation\">)<\/span> clazz<span class=\"token punctuation\">.<\/span><span class=\"token function\">newInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/\u83b7\u53d6\u8fd0\u884c\u65f6\u7c7b\u7684\u6307\u5b9a\u540d\u79f0\u7684\u5c5e\u6027<\/span><br \/>\n        <span class=\"token class-name\">Field<\/span> age <span class=\"token operator\">&#061;<\/span> clazz<span class=\"token punctuation\">.<\/span><span class=\"token function\">getField<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;age&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u83b7\u53d6\u6216\u8bbe\u7f6e\u6b64\u5c5e\u6027\u7684\u503c<\/span><br \/>\n        age<span class=\"token punctuation\">.<\/span><span class=\"token function\">set<\/span><span class=\"token punctuation\">(<\/span>person<span class=\"token punctuation\">,<\/span> <span class=\"token number\">30<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>age<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>person<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/\/ \/private String name;<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Test<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">test02<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">Exception<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">Class<\/span> clazz <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">Person<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">Person<\/span> person <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Person<\/span><span class=\"token punctuation\">)<\/span> clazz<span class=\"token punctuation\">.<\/span><span class=\"token function\">newInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/\u83b7\u53d6\u8fd0\u884c\u65f6\u7c7b\u7684\u6307\u5b9a\u540d\u79f0\u7684\u5c5e\u6027&#xff08;\u79c1\u6709\u5316\u7684\u5c5e\u6027\u4f7f\u7528&#xff09;getDeclaredField\u6765\u8fdb\u884c\u83b7\u53d6<\/span><br \/>\n        <span class=\"token class-name\">Field<\/span> name <span class=\"token operator\">&#061;<\/span> clazz<span class=\"token punctuation\">.<\/span><span class=\"token function\">getDeclaredField<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;name&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/setAccessible(true)&#xff1a;\u786e\u4fdd\u6b64\u5c5e\u6027\u662f\u53ef\u4ee5\u8bbf\u95ee\u7684<\/span><br \/>\n        name<span class=\"token punctuation\">.<\/span><span class=\"token function\">setAccessible<\/span><span class=\"token punctuation\">(<\/span><span class=\"token boolean\">true<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u83b7\u53d6\u6216\u8bbe\u7f6e\u6b64\u5c5e\u6027\u7684\u503c<\/span><br \/>\n        name<span class=\"token punctuation\">.<\/span><span class=\"token function\">set<\/span><span class=\"token punctuation\">(<\/span>person<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;Zhangsan&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>name<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>person<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/private static String info;<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Test<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">test03<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">Exception<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">Class<\/span> clazz <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">Person<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">Person<\/span> person <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Person<\/span><span class=\"token punctuation\">)<\/span> clazz<span class=\"token punctuation\">.<\/span><span class=\"token function\">newInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/\u83b7\u53d6\u8fd0\u884c\u65f6\u7c7b\u7684\u6307\u5b9a\u540d\u79f0\u7684\u5c5e\u6027&#xff08;\u79c1\u6709\u5316\u7684\u5c5e\u6027\u4f7f\u7528&#xff09;getDeclaredField\u6765\u8fdb\u884c\u83b7\u53d6<\/span><br \/>\n        <span class=\"token class-name\">Field<\/span> info <span class=\"token operator\">&#061;<\/span> clazz<span class=\"token punctuation\">.<\/span><span class=\"token function\">getDeclaredField<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;info&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/setAccessible(true)&#xff1a;\u786e\u4fdd\u6b64\u5c5e\u6027\u662f\u53ef\u4ee5\u8bbf\u95ee\u7684<\/span><br \/>\n        info<span class=\"token punctuation\">.<\/span><span class=\"token function\">setAccessible<\/span><span class=\"token punctuation\">(<\/span><span class=\"token boolean\">true<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u83b7\u53d6\u6216\u8bbe\u7f6e\u6b64\u5c5e\u6027\u7684\u503c<\/span><br \/>\n        <span class=\"token comment\">\/\/\u56e0\u4e3a\u662f\u7c7b\u53d8\u91cf&#xff0c;\u6211\u4eec\u5c31\u53ef\u4ee5\u628a\u5bf9\u8c61\u540d\u7701\u7565\u6389&#xff0c;\u7528null\u6765\u8fdb\u884c\u8868\u793a<\/span><br \/>\n        info<span class=\"token punctuation\">.<\/span><span class=\"token function\">set<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">null<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;I am a boy.&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>info<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>person<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/********************\u5982\u4e0b\u662f\u8c03\u7528\u6307\u5b9a\u7684\u65b9\u6cd5************************<\/span><br \/>\n    <span class=\"token comment\">\/*<br \/>\n     * \u53cd\u5c04\u7684\u5e94\u75283-2&#xff1a;\u8c03\u7528\u6307\u5b9a\u7684\u65b9\u6cd5<br \/>\n     *<br \/>\n     * *\/<\/span><br \/>\n    <span class=\"token comment\">\/\/private String showNation(String nation,int age)<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Test<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">test04<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">Exception<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">Class<\/span> clazz <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">Person<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">Person<\/span> person <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Person<\/span><span class=\"token punctuation\">)<\/span> clazz<span class=\"token punctuation\">.<\/span><span class=\"token function\">newInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/\u83b7\u53d6\u8fd0\u884c\u65f6\u7c7b\u7684\u6307\u5b9a\u540d\u79f0\u7684\u5c5e\u6027&#xff08;\u79c1\u6709\u5316\u7684\u5c5e\u6027\u4f7f\u7528&#xff09;getDeclaredMethod\u6765\u8fdb\u884c\u83b7\u53d6<\/span><br \/>\n        <span class=\"token class-name\">Method<\/span> showNation <span class=\"token operator\">&#061;<\/span> clazz<span class=\"token punctuation\">.<\/span><span class=\"token function\">getDeclaredMethod<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;showNation&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">String<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/setAccessible(true)&#xff1a;\u786e\u4fdd\u6b64\u5c5e\u6027\u662f\u53ef\u4ee5\u8bbf\u95ee\u7684<\/span><br \/>\n        showNation<span class=\"token punctuation\">.<\/span><span class=\"token function\">setAccessible<\/span><span class=\"token punctuation\">(<\/span><span class=\"token boolean\">true<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/3.\u901a\u8fc7Method\u5b9e\u4f8b\u8c03\u7528invoke(Object obj,Object &#8230; objs),\u5373\u4e3a\u5bf9Method\u5bf9\u5e94\u7684\u65b9\u6cd5\u7684\u8c03\u7528\u3002<\/span><br \/>\n        <span class=\"token comment\">\/\/invoke()\u7684\u8fd4\u56de\u503c\u5373\u4e3aMethod\u5bf9\u5e94\u7684\u65b9\u6cd5\u7684\u8fd4\u56de\u503c<\/span><br \/>\n        <span class=\"token comment\">\/\/\u7279\u522b\u7684&#xff1a;\u5982\u679cMethod\u5bf9\u5e94\u7684\u65b9\u6cd5\u7684\u8fd4\u56de\u503c\u7c7b\u578b\u4e3avoid&#xff0c;\u5219invoke()\u8fd4\u56de\u503c\u4e3anull<\/span><br \/>\n        <span class=\"token class-name\">Object<\/span> invoke <span class=\"token operator\">&#061;<\/span> showNation<span class=\"token punctuation\">.<\/span><span class=\"token function\">invoke<\/span><span class=\"token punctuation\">(<\/span>person<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;\u4e2d\u56fd&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">30<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>invoke<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/public static void showInfo()<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Test<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">test05<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">Exception<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">Class<\/span> clazz <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">Person<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">Person<\/span> person <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Person<\/span><span class=\"token punctuation\">)<\/span> clazz<span class=\"token punctuation\">.<\/span><span class=\"token function\">newInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/\u83b7\u53d6\u8fd0\u884c\u65f6\u7c7b\u7684\u6307\u5b9a\u540d\u79f0\u7684\u5c5e\u6027&#xff08;\u79c1\u6709\u5316\u7684\u5c5e\u6027\u4f7f\u7528&#xff09;getDeclaredMethod\u6765\u8fdb\u884c\u83b7\u53d6<\/span><br \/>\n        <span class=\"token class-name\">Method<\/span> showNation <span class=\"token operator\">&#061;<\/span> clazz<span class=\"token punctuation\">.<\/span><span class=\"token function\">getDeclaredMethod<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;showInfo&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/setAccessible(true)&#xff1a;\u786e\u4fdd\u6b64\u5c5e\u6027\u662f\u53ef\u4ee5\u8bbf\u95ee\u7684<\/span><br \/>\n        showNation<span class=\"token punctuation\">.<\/span><span class=\"token function\">setAccessible<\/span><span class=\"token punctuation\">(<\/span><span class=\"token boolean\">true<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/3.\u901a\u8fc7Method\u5b9e\u4f8b\u8c03\u7528invoke(Object obj,Object &#8230; objs),\u5373\u4e3a\u5bf9Method\u5bf9\u5e94\u7684\u65b9\u6cd5\u7684\u8c03\u7528\u3002<\/span><br \/>\n        <span class=\"token comment\">\/\/invoke()\u7684\u8fd4\u56de\u503c\u5373\u4e3aMethod\u5bf9\u5e94\u7684\u65b9\u6cd5\u7684\u8fd4\u56de\u503c<\/span><br \/>\n        <span class=\"token comment\">\/\/\u7279\u522b\u7684&#xff1a;\u5982\u679cMethod\u5bf9\u5e94\u7684\u65b9\u6cd5\u7684\u8fd4\u56de\u503c\u7c7b\u578b\u4e3avoid&#xff0c;\u5219invoke()\u8fd4\u56de\u503c\u4e3anull<\/span><br \/>\n        <span class=\"token class-name\">Object<\/span> invoke <span class=\"token operator\">&#061;<\/span> showNation<span class=\"token punctuation\">.<\/span><span class=\"token function\">invoke<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">null<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>invoke<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/********************\u5982\u4e0b\u662f\u8c03\u7528\u6307\u5b9a\u7684\u6784\u9020\u5668************************<\/span><br \/>\n    <span class=\"token comment\">\/*<br \/>\n     * \u53cd\u5c04\u7684\u5e94\u75283-3&#xff1a;\u8c03\u7528\u6307\u5b9a\u7684\u6784\u9020\u5668<br \/>\n     *<br \/>\n     * *\/<\/span><br \/>\n    <span class=\"token comment\">\/\/private Person(String name, int age)<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Test<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">test06<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">Exception<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">Class<\/span> clazz <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">Person<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u83b7\u53d6\u8fd0\u884c\u65f6\u7c7b\u7684\u6307\u5b9a\u540d\u79f0\u7684\u5c5e\u6027&#xff08;\u79c1\u6709\u5316\u7684\u5c5e\u6027\u4f7f\u7528&#xff09;getDeclaredMethod\u6765\u8fdb\u884c\u83b7\u53d6<\/span><br \/>\n        <span class=\"token class-name\">Constructor<\/span> constructor <span class=\"token operator\">&#061;<\/span> clazz<span class=\"token punctuation\">.<\/span><span class=\"token function\">getDeclaredConstructor<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/setAccessible(true)&#xff1a;\u786e\u4fdd\u6b64\u5c5e\u6027\u662f\u53ef\u4ee5\u8bbf\u95ee\u7684<\/span><br \/>\n        constructor<span class=\"token punctuation\">.<\/span><span class=\"token function\">setAccessible<\/span><span class=\"token punctuation\">(<\/span><span class=\"token boolean\">true<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/3.\u901a\u8fc7Constructor\u5b9e\u4f8b\u8c03\u7528newInstance(Object &#8230; objs),\u8fd4\u56de\u4e00\u4e2a\u8fd0\u884c\u65f6\u7c7b\u7684\u5b9e\u4f8b\u3002<\/span><br \/>\n        <span class=\"token class-name\">Person<\/span> person1 <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Person<\/span><span class=\"token punctuation\">)<\/span> constructor<span class=\"token punctuation\">.<\/span><span class=\"token function\">newInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u674e\u56db&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">40<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>person1<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/\u4f7f\u7528Constructor\u66ff\u6362\u539f\u6709\u7684\u4f7f\u7528Class\u8c03\u7528newInstance()\u7684\u65b9\u5f0f\u521b\u5efa\u5bf9\u8c61<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Test<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">test07<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">Exception<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">Class<\/span> clazz <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">Person<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/1.\u901a\u8fc7Class\u7684\u5b9e\u4f8b\u8c03\u7528getDeclaredConstructor(Class &#8230; args)&#xff0c;\u83b7\u53d6\u6307\u5b9a\u53c2\u6570\u7c7b\u578b\u7684\u6784\u9020\u5668<\/span><br \/>\n        <span class=\"token class-name\">Constructor<\/span> declaredConstructor <span class=\"token operator\">&#061;<\/span> clazz<span class=\"token punctuation\">.<\/span><span class=\"token function\">getDeclaredConstructor<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/2.\u8bbe\u7f6e\u53ef\u4ee5\u8fdb\u884c\u8bbf\u95ee<\/span><br \/>\n        declaredConstructor<span class=\"token punctuation\">.<\/span><span class=\"token function\">setAccessible<\/span><span class=\"token punctuation\">(<\/span><span class=\"token boolean\">true<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/3.\u901a\u8fc7Constructor\u5b9e\u4f8b\u8c03\u7528newInstance(Object &#8230; objs),\u8fd4\u56de\u4e00\u4e2a\u8fd0\u884c\u65f6\u7c7b\u7684\u5b9e\u4f8b\u3002<\/span><br \/>\n        <span class=\"token class-name\">Person<\/span> person <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Person<\/span><span class=\"token punctuation\">)<\/span> declaredConstructor<span class=\"token punctuation\">.<\/span><span class=\"token function\">newInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>person<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>\u53cd\u5c04\u7684\u52a8\u6001\u6027<\/h4>\n<p><span class=\"token keyword\">package<\/span> <span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>jiazhong<span class=\"token punctuation\">.<\/span><\/span>L_\u53cd\u5c04\u7684\u4f7f\u7528<span class=\"token punctuation\">.<\/span>test04<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token namespace\">org<span class=\"token punctuation\">.<\/span>junit<span class=\"token punctuation\">.<\/span>jupiter<span class=\"token punctuation\">.<\/span>api<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Test<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>lang<span class=\"token punctuation\">.<\/span>reflect<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Constructor<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>lang<span class=\"token punctuation\">.<\/span>reflect<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Method<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>util<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Date<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">ReflectTest<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/\u9759\u6001\u6027 \u552f\u4e00\u7684<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">Person<\/span> <span class=\"token function\">getInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Person<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/\u4f53\u4f1a&#xff1a;\u53cd\u5c04\u7684\u52a8\u6001\u6027<\/span><br \/>\n    <span class=\"token comment\">\/\/\u4e3e\u4f8b1&#xff1a;\u9020\u5bf9\u8c61<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">T<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> <span class=\"token class-name\">T<\/span> <span class=\"token function\">getInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> className<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">Exception<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">Class<\/span> clazz <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">Class<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">forName<\/span><span class=\"token punctuation\">(<\/span>className<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">Constructor<\/span> declaredConstructor <span class=\"token operator\">&#061;<\/span> clazz<span class=\"token punctuation\">.<\/span><span class=\"token function\">getDeclaredConstructor<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        declaredConstructor<span class=\"token punctuation\">.<\/span><span class=\"token function\">setAccessible<\/span><span class=\"token punctuation\">(<\/span><span class=\"token boolean\">true<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">T<\/span><span class=\"token punctuation\">)<\/span> declaredConstructor<span class=\"token punctuation\">.<\/span><span class=\"token function\">newInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Test<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">test01<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">Exception<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">Person<\/span> p1 <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">getInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>p1<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/*String className &#061; &#034;com.jiazhong.G_\u9762\u5411\u5bf9\u8c61\u9ad8\u7ea7\u7f16\u7a0b.\u4ee3\u7801\u5757.Animal&#034;;<br \/>\n        Person p2 &#061; getInstance(className);<br \/>\n        System.out.println(p2);*\/<\/span><\/p>\n<p>        <span class=\"token class-name\">String<\/span> dateName <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;java.util.Date&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">Date<\/span> p3 <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">getInstance<\/span><span class=\"token punctuation\">(<\/span>dateName<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>p3<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/\u4f53\u4f1a&#xff1a;\u53cd\u5c04\u7684\u52a8\u6001\u6027<\/span><br \/>\n    <span class=\"token comment\">\/\/\u4e3e\u4f8b2&#xff1a;\u65b9\u6cd5\u7684\u8c03\u7528<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">Object<\/span> <span class=\"token function\">invoke<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> className<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">String<\/span> methodName<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">Exception<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">Class<\/span> clazz <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">Class<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">forName<\/span><span class=\"token punctuation\">(<\/span>className<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">Constructor<\/span> declaredConstructor <span class=\"token operator\">&#061;<\/span> clazz<span class=\"token punctuation\">.<\/span><span class=\"token function\">getDeclaredConstructor<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        declaredConstructor<span class=\"token punctuation\">.<\/span><span class=\"token function\">setAccessible<\/span><span class=\"token punctuation\">(<\/span><span class=\"token boolean\">true<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">Object<\/span> o <span class=\"token operator\">&#061;<\/span> declaredConstructor<span class=\"token punctuation\">.<\/span><span class=\"token function\">newInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">Method<\/span> declaredMethod <span class=\"token operator\">&#061;<\/span> clazz<span class=\"token punctuation\">.<\/span><span class=\"token function\">getDeclaredMethod<\/span><span class=\"token punctuation\">(<\/span>methodName<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> declaredMethod<span class=\"token punctuation\">.<\/span><span class=\"token function\">invoke<\/span><span class=\"token punctuation\">(<\/span>o<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token annotation punctuation\">&#064;Test<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">test02<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">Exception<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> className <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;com.jiazhong.L_\u53cd\u5c04\u7684\u4f7f\u7528.test04.Person&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> methodName <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;show&#034;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token class-name\">Object<\/span> invoke <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">invoke<\/span><span class=\"token punctuation\">(<\/span>className<span class=\"token punctuation\">,<\/span> methodName<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span>invoke<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h3>\u83b7\u53d6\u914d\u7f6e\u6587\u4ef6\u4fe1\u606f<\/h3>\n<ul>\n<li>Properties\n<ul>\n<li>Properties \u7c7b\u662f Java \u4e2d\u7528\u4e8e\u5904\u7406\u914d\u7f6e\u6587\u4ef6\u7684\u4e00\u4e2a\u5b9e\u7528\u5de5\u5177\u7c7b&#xff0c;\u5b83\u7ee7\u627f\u81ea Hashtable \u7c7b&#xff0c;\u5141\u8bb8\u5e94\u7528\u7a0b\u5e8f\u8bfb\u53d6\u548c\u5199\u5165\u90a3\u4e9b\u53ef\u5728\u8fd0\u884c\u65f6\u8fdb\u884c\u4fee\u6539\u7684\u914d\u7f6e\u6587\u4ef6\u3002\u5728 Java \u4e2d&#xff0c;\u914d\u7f6e\u6587\u4ef6\u901a\u5e38\u4ee5 .properties \u683c\u5f0f\u5b58\u5728&#xff0c;\u5b83\u4eec\u4ee5\u952e\u503c\u5bf9\u7684\u5f62\u5f0f\u5b58\u50a8\u6570\u636e\u3002<\/li>\n<\/ul>\n<\/li>\n<li>Properties \u7c7b\u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u65b9\u6cd5\u6765\u64cd\u4f5c\u952e\u503c\u5bf9\u6570\u636e\u3002\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u5305\u62ec&#xff1a;\n<ul>\n<li>getProperty(String key): \u6839\u636e\u6307\u5b9a\u7684\u952e\u83b7\u53d6\u5c5e\u6027\u503c\u3002<\/li>\n<li>setProperty(String key, String value): \u8bbe\u7f6e\u6216\u66f4\u65b0\u5c5e\u6027\u503c\u3002<\/li>\n<li>load(InputStream inStream): \u4ece\u8f93\u5165\u6d41\u4e2d\u8bfb\u53d6\u5c5e\u6027\u5217\u8868\u3002<\/li>\n<li>store(OutputStream out, String comments): \u5c06\u5c5e\u6027\u5217\u8868\u5199\u5165\u8f93\u51fa\u6d41\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4>\u52a0\u8f7d\u914d\u7f6e\u6587\u4ef6\u7684\u4e24\u79cd\u65b9\u6cd5<\/h4>\n<ul>\n<li>\u65b9\u5f0f1&#xff1a;\u4f7f\u7528FileInputStream\n<ul>\n<li>\u8981\u6c42&#xff1a;\u914d\u7f6e\u6587\u4ef6\u5fc5\u987b\u653e\u7f6e\u5728\u5f53\u524dmodule\u7684src\u76ee\u5f55\u4e0b<\/li>\n<li>my-project\/<br \/>\n\u251c\u2500 module1\/<br \/>\n\u2502  \u251c\u2500 src\/<br \/>\n\u2502  \u2502  \u2514\u2500 config.properties<br \/>\n\u2502  \u2514\u2500 pom.xml  &lt;- \u6a21\u5757\u6839\u76ee\u5f55<br \/>\n\u2514\u2500 module2\/<\/li>\n<\/ul>\n<\/li>\n<li>\u65b9\u5f0f2&#xff1a;\u4f7f\u7528\u7c7b\u52a0\u8f7d\u5668\n<ul>\n<li>\u4ece Java \u7684\u7c7b\u8def\u5f84\u4e2d\u67e5\u627e\u8d44\u6e90&#xff0c;\u4e0d\u4f9d\u8d56\u5177\u4f53\u6587\u4ef6\u7cfb\u7edf\u8def\u5f84\u3002<br \/>\n\u76f8\u5bf9\u8def\u5f84\u89c4\u5219&#xff1a;<br \/>\n\u65e0\u524d\u7f6e\u8def\u5f84&#xff08;\u5982 config.properties&#xff09;&#xff1a;\u9ed8\u8ba4\u4ece\u7c7b\u8def\u5f84\u7684\u6839\u76ee\u5f55\u67e5\u627e\u3002<br \/>\n\u5e26\u524d\u7f6e\u8def\u5f84&#xff08;\u5982 com\/example\/config.properties&#xff09;&#xff1a;\u4ece\u5bf9\u5e94\u5305\u8def\u5f84\u67e5\u627e\u3002<\/li>\n<li>my-project\/<br \/>\n\u251c\u2500 module1\/<br \/>\n\u2502  \u251c\u2500 src\/<br \/>\n\u2502  \u2502  \u2514\u2500 config.properties<br \/>\n\u2502  \u2514\u2500 pom.xml  &lt;- \u6a21\u5757\u6839\u76ee\u5f55<br \/>\n\u2514\u2500 module2\/<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p> <span class=\"token annotation punctuation\">&#064;Test<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">test02<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">IOException<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">Properties<\/span> properties <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Properties<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u65b9\u5f0f1&#xff1a;\u6b64\u65f6\u9ed8\u8ba4\u7684\u76f8\u5bf9\u8def\u5f84\u662f\u5f53\u524d\u7684module<\/span><br \/>\n        <span class=\"token comment\">\/\/FileInputStream in &#061; new FileInputStream(&#034;src\/\/config.properties&#034;);<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/\u65b9\u5f0f2&#xff1a;\u4f7f\u7528\u7c7b\u7684\u52a0\u8f7d\u5668<\/span><br \/>\n        <span class=\"token comment\">\/\/\u6b64\u65f6\u9ed8\u8ba4\u7684\u76f8\u5bf9\u8def\u5f84\u662f\u5f53\u524dmodule\u7684src\u76ee\u5f55<\/span><br \/>\n        <span class=\"token class-name\">InputStream<\/span> in <span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">ReflectionTest04<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getClassLoader<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getResourceAsStream<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;config.properties&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        properties<span class=\"token punctuation\">.<\/span><span class=\"token function\">load<\/span><span class=\"token punctuation\">(<\/span>in<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/\u83b7\u53d6\u914d\u7f6e\u6587\u4ef6\u4e2d\u7684\u4fe1\u606f<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> name <span class=\"token operator\">&#061;<\/span> properties<span class=\"token punctuation\">.<\/span><span class=\"token function\">getProperty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;username&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> password <span class=\"token operator\">&#061;<\/span> properties<span class=\"token punctuation\">.<\/span><span class=\"token function\">getProperty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;password&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;name &#061; &#034;<\/span> <span class=\"token operator\">&#043;<\/span> name <span class=\"token operator\">&#043;<\/span> <span class=\"token string\">&#034;, password &#061; &#034;<\/span> <span class=\"token operator\">&#043;<\/span> password<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token punctuation\">}<\/span><\/p>\n<h4>\u53cd\u5c04\u7efc\u5408\u4e60\u9898<\/h4>\n<p>\u6848\u4f8b&#xff1a;\u69a8\u6c6a\u673a\u69a8\u6c34\u679c\u6c41&#xff0c;\u6c34\u679c\u5206\u522b\u6709\u82f9\u679c&#xff08;Apple)\u3001\u9999\u8549&#xff08;Banana)\u3001\u6854\u5b50&#xff08;Orange&#xff09;\u7b49\u3002<br \/>\n\u63d0\u793a&#xff1a;<br \/>\n1\u3001\u58f0\u660e(Fruit)\u6c34\u679c\u63a5\u53e3&#xff0c;\u5305\u542b\u69a8\u6c41\u62bd\u8c61\u65b9\u6cd5&#xff1a;void squeeze();&#xff1b;<br \/>\n2\u3001\u58f0\u660e\u69a8\u6c41\u673a(Juicer)&#xff0c;\u5305\u542b\u8fd0\u884c\u65b9\u6cd5&#xff1a;publicvoidrun&#xff08;Fruit f)&#xff0c;\u65b9\u6cd5\u4f53\u4e2d&#xff0c;\u8c03\u7528f\u7684\u69a8\u6c41\u65b9\u6cd5squeeze()<br \/>\n3\u3001\u58f0\u660e\u5404\u79cd\u6c34\u679c\u7c7b&#xff0c;\u5b9e\u73b0\u6c34\u679c\u63a5\u53e3&#xff0c;\u5e76\u91cd\u5199squeeze();<br \/>\n4\u3001\u5728src\u4e0b&#xff0c;\u5efa\u7acb\u914d\u7f6e\u6587\u4ef6&#xff1a;config.properties&#xff0c;\u5e76\u5728\u914d\u7f6e\u6587\u4ef6\u4e2d\u914d\u4e0afruitName&#061;xxx&#xff08;\u5176\u4e2dxx\u4e3a\u67d0\u79cd\u6c34\u679c\u7684\u5168\u7c7b\u540d<br \/>\n5\u3001\u5728FruitTest\u6d4b\u8bd5\u7c7b\u4e2d&#xff0c;<br \/>\n&#xff08;1&#xff09;\u8bfb\u53d6\u914d\u7f6e\u6587\u4ef6&#xff0c;\u83b7\u53d6\u6c34\u679c\u7c7b\u540d&#xff0c;\u5e76\u7528\u53cd\u5c04\u521b\u5efa\u6c34\u679c\u5bf9\u8c61&#xff0c;<br \/>\n&#xff08;2&#xff09;\u521b\u5efa\u69a8\u6c41\u673a\u5bf9\u8c61&#xff0c;\u5e76\u8c03\u7528run&#xff08;\u65b9\u6cd5<\/p>\n<p><span class=\"token keyword\">package<\/span> <span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>jiazhong<span class=\"token punctuation\">.<\/span>jiaocheng<span class=\"token punctuation\">.<\/span>reflection<span class=\"token punctuation\">.<\/span>exercise<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Apple<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">Fruit<\/span><span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">squeeze<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;apple\u6c41&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">package<\/span> <span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>jiazhong<span class=\"token punctuation\">.<\/span>jiaocheng<span class=\"token punctuation\">.<\/span>reflection<span class=\"token punctuation\">.<\/span>exercise<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Banana<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">Fruit<\/span><span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">squeeze<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;banana\u6c41&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">package<\/span> <span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>jiazhong<span class=\"token punctuation\">.<\/span>jiaocheng<span class=\"token punctuation\">.<\/span>reflection<span class=\"token punctuation\">.<\/span>exercise<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Orange<\/span> <span class=\"token keyword\">implements<\/span> <span class=\"token class-name\">Fruit<\/span><span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token annotation punctuation\">&#064;Override<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">squeeze<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;orange\u6c41&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">package<\/span> <span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>jiazhong<span class=\"token punctuation\">.<\/span>jiaocheng<span class=\"token punctuation\">.<\/span>reflection<span class=\"token punctuation\">.<\/span>exercise<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">interface<\/span> <span class=\"token class-name\">Fruit<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">void<\/span> <span class=\"token function\">squeeze<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">package<\/span> <span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>jiazhong<span class=\"token punctuation\">.<\/span>jiaocheng<span class=\"token punctuation\">.<\/span>reflection<span class=\"token punctuation\">.<\/span>exercise<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Juicer<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">run<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Fruit<\/span> f<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n        f<span class=\"token punctuation\">.<\/span><span class=\"token function\">squeeze<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">package<\/span> <span class=\"token namespace\">com<span class=\"token punctuation\">.<\/span>jiazhong<span class=\"token punctuation\">.<\/span>jiaocheng<span class=\"token punctuation\">.<\/span>reflection<span class=\"token punctuation\">.<\/span>exercise<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>io<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">InputStream<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>lang<span class=\"token punctuation\">.<\/span>reflect<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Constructor<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>util<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Properties<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">FruitTest<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> args<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">throws<\/span> <span class=\"token class-name\">Exception<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">Properties<\/span> properties<span class=\"token operator\">&#061;<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Properties<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/ \u521b\u5efaProperties\u96c6\u5408\u5bf9\u8c61,\u4e3a\u4e86\u83b7\u53d6\u914d\u7f6e\u6587\u4ef6<\/span><br \/>\n        <span class=\"token class-name\">InputStream<\/span> in<span class=\"token operator\">&#061;<\/span><span class=\"token class-name\">FruitTest<\/span><span class=\"token punctuation\">.<\/span><span class=\"token keyword\">class<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getClassLoader<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">getResourceAsStream<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Juicer.properties&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/ \u521b\u5efa\u8f93\u5165\u6d41\u5bf9\u8c61<\/span><br \/>\n        properties<span class=\"token punctuation\">.<\/span><span class=\"token function\">load<\/span><span class=\"token punctuation\">(<\/span>in<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/ \u52a0\u8f7d\u8f93\u5165\u6d41\u5bf9\u8c61<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> fruit <span class=\"token operator\">&#061;<\/span>properties<span class=\"token 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punctuation\">.<\/span><span class=\"token function\">getProperty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;fruitName&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/ \u83b7\u53d6\u914d\u7f6e\u6587\u4ef6\u4e2d fruitName\u5c5e\u6027\u7684\u503c<\/span><br \/>\n<span class=\"token comment\">\/\/        System.out.println(fruit);<\/span><br \/>\n        <span class=\"token class-name\">Class<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token operator\">?<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> fruitClass<span class=\"token operator\">&#061;<\/span> <span class=\"token class-name\">Class<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">forName<\/span><span class=\"token punctuation\">(<\/span>fruit<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">Fruit<\/span> fruit1<span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Fruit<\/span><span class=\"token punctuation\">)<\/span> fruitClass<span class=\"token punctuation\">.<\/span><span class=\"token function\">newInstance<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">Juicer<\/span> juicer<span class=\"token operator\">&#061;<\/span><span class=\"token keyword\">new<\/span> <span class=\"token class-name\">Juicer<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        juicer<span class=\"token punctuation\">.<\/span><span class=\"token function\">run<\/span><span class=\"token punctuation\">(<\/span>fruit1<span 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