{"id":80617,"date":"2026-03-05T16:10:15","date_gmt":"2026-03-05T08:10:15","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/80617.html"},"modified":"2026-03-05T16:10:15","modified_gmt":"2026-03-05T08:10:15","slug":"java-%e9%9d%a2%e8%af%95%e9%a2%98%e5%8f%8a%e7%ad%94%e6%a1%88%e6%95%b4%e7%90%86%ef%bc%882026-%e5%b9%b4%e9%87%91%e4%b8%89%e9%93%b6%e5%9b%9b%e6%9c%80%e6%96%b0%e7%89%88%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/80617.html","title":{"rendered":"Java \u9762\u8bd5\u9898\u53ca\u7b54\u6848\u6574\u7406\uff082026 \u5e74\u91d1\u4e09\u94f6\u56db\u6700\u65b0\u7248\uff09"},"content":{"rendered":"<p>2024 \u5e74\u91d1\u4e5d\u94f6\u5341\u5230\u4e86&#xff0c;\u53d1\u73b0\u7f51\u4e0a\u5f88\u591a\u00a0Java\u00a0\u9762\u8bd5\u9898\u90fd\u6ca1\u6709\u7b54\u6848&#xff0c;\u6240\u4ee5\u82b1\u4e86\u5f88\u957f\u65f6\u95f4\u641c\u96c6\u6574\u7406\u51fa\u6765\u4e86\u8fd9\u5957 Java \u9762\u8bd5\u9898\u5927\u5168~\u8fd9\u5957\u4e92\u8054\u7f51 Java \u5de5\u7a0b\u5e08\u9762\u8bd5\u9898\u5305\u62ec\u4e86&#xff1a;MyBatis\u3001ZK\u3001Dubbo\u3001EL\u3001Redis\u3001MySQL\u3001\u5e76\u53d1\u7f16\u7a0b\u3001Java \u9762\u8bd5\u3001Spring\u3001\u5fae\u670d\u52a1\u3001Linux\u3001Springboot\u3001SpringCloud\u3001MQ\u3001Kafka \u9762\u8bd5\u4e13\u9898<\/p>\n<h5>\u4e00\u3001Java \u57fa\u7840<\/h5>\n<p>1. JDK \u548c JRE \u6709\u4ec0\u4e48\u533a\u522b&#xff1f;<\/p>\n<ul>\n<li>\n<p>JDK&#xff1a;Java Development Kit \u7684\u7b80\u79f0&#xff0c;java \u5f00\u53d1\u5de5\u5177\u5305&#xff0c;\u63d0\u4f9b\u4e86 java \u7684\u5f00\u53d1\u73af\u5883\u548c\u8fd0\u884c\u73af\u5883\u3002<\/p>\n<\/li>\n<li>\n<p>JRE&#xff1a;Java Runtime Environment \u7684\u7b80\u79f0&#xff0c;java \u8fd0\u884c\u73af\u5883&#xff0c;\u4e3a java \u7684\u8fd0\u884c\u63d0\u4f9b\u4e86\u6240\u9700\u73af\u5883\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u5177\u4f53\u6765\u8bf4 JDK \u5176\u5b9e\u5305\u542b\u4e86 JRE&#xff0c;\u540c\u65f6\u8fd8\u5305\u542b\u4e86\u7f16\u8bd1 java \u6e90\u7801\u7684\u7f16\u8bd1\u5668 javac&#xff0c;\u8fd8\u5305\u542b\u4e86\u5f88\u591a java \u7a0b\u5e8f\u8c03\u8bd5\u548c\u5206\u6790\u7684\u5de5\u5177\u3002\u7b80\u5355\u6765\u8bf4&#xff1a;\u5982\u679c\u4f60\u9700\u8981\u8fd0\u884c java \u7a0b\u5e8f&#xff0c;\u53ea\u9700\u5b89\u88c5 JRE \u5c31\u53ef\u4ee5\u4e86&#xff0c;\u5982\u679c\u4f60\u9700\u8981\u7f16\u5199 java \u7a0b\u5e8f&#xff0c;\u9700\u8981\u5b89\u88c5 JDK\u3002<\/p>\n<p>2. &#061;&#061; \u548c equals \u7684\u533a\u522b\u662f\u4ec0\u4e48&#xff1f;&#061;&#061; \u5bf9\u4e8e\u57fa\u672c\u7c7b\u578b\u6765\u8bf4\u662f\u503c\u6bd4\u8f83&#xff0c;\u5bf9\u4e8e\u5f15\u7528\u7c7b\u578b\u6765\u8bf4\u662f\u6bd4\u8f83\u7684\u662f\u5f15\u7528&#xff1b;\u800c\u00a0equals\u00a0\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u662f\u5f15\u7528\u6bd4\u8f83&#xff0c;\u53ea\u662f\u5f88\u591a\u7c7b\u91cd\u65b0\u4e86 equals \u65b9\u6cd5&#xff0c;\u6bd4\u5982 String\u3001Integer \u7b49\u628a\u5b83\u53d8\u6210\u4e86\u503c\u6bd4\u8f83&#xff0c;\u6240\u4ee5\u4e00\u822c\u60c5\u51b5\u4e0b equals \u6bd4\u8f83\u7684\u662f\u503c\u662f\u5426\u76f8\u7b49\u3002<\/p>\n<p>3. \u4e24\u4e2a\u5bf9\u8c61\u7684 hashCode()\u76f8\u540c&#xff0c;\u5219 equals()\u4e5f\u4e00\u5b9a\u4e3a true&#xff0c;\u5bf9\u5417&#xff1f;\u4e0d\u5bf9&#xff0c;\u4e24\u4e2a\u5bf9\u8c61\u7684 hashCode()\u76f8\u540c&#xff0c;equals()\u4e0d\u4e00\u5b9a true\u3002\u4ee3\u7801\u89e3\u8bfb&#xff1a;\u5f88\u663e\u7136\u201c\u901a\u8bdd\u201d\u548c\u201c\u91cd\u5730\u201d\u7684 hashCode() \u76f8\u540c&#xff0c;\u7136\u800c equals() \u5219\u4e3a false&#xff0c;\u56e0\u4e3a\u5728\u6563\u5217\u8868\u4e2d&#xff0c;hashCode()\u76f8\u7b49\u5373\u4e24\u4e2a\u952e\u503c\u5bf9\u7684\u54c8\u5e0c\u503c\u76f8\u7b49&#xff0c;\u7136\u800c\u54c8\u5e0c\u503c\u76f8\u7b49&#xff0c;\u5e76\u4e0d\u4e00\u5b9a\u80fd\u5f97\u51fa\u952e\u503c\u5bf9\u76f8\u7b49\u3002<\/p>\n<p>4. final \u5728 java \u4e2d\u6709\u4ec0\u4e48\u4f5c\u7528&#xff1f;<\/p>\n<ul>\n<li>\n<p>final \u4fee\u9970\u7684\u7c7b\u53eb\u6700\u7ec8\u7c7b&#xff0c;\u8be5\u7c7b\u4e0d\u80fd\u88ab\u7ee7\u627f\u3002<\/p>\n<\/li>\n<li>\n<p>final \u4fee\u9970\u7684\u65b9\u6cd5\u4e0d\u80fd\u88ab\u91cd\u5199\u3002<\/p>\n<\/li>\n<li>\n<p>final \u4fee\u9970\u7684\u53d8\u91cf\u53eb\u5e38\u91cf&#xff0c;\u5e38\u91cf\u5fc5\u987b\u521d\u59cb\u5316&#xff0c;\u521d\u59cb\u5316\u4e4b\u540e\u503c\u5c31\u4e0d\u80fd\u88ab\u4fee\u6539\u3002<\/p>\n<\/li>\n<\/ul>\n<p>5. java \u4e2d\u7684 Math.round(-1.5) \u7b49\u4e8e\u591a\u5c11&#xff1f;\u7b49\u4e8e -1&#xff0c;\u56e0\u4e3a\u5728\u6570\u8f74\u4e0a\u53d6\u503c\u65f6&#xff0c;\u4e2d\u95f4\u503c&#xff08;0.5&#xff09;\u5411\u53f3\u53d6\u6574&#xff0c;\u6240\u4ee5\u6b63 0.5 \u662f\u5f80\u4e0a\u53d6\u6574&#xff0c;\u8d1f 0.5 \u662f\u76f4\u63a5\u820d\u5f03\u3002<\/p>\n<p>6. String \u5c5e\u4e8e\u57fa\u7840\u7684\u6570\u636e\u7c7b\u578b\u5417&#xff1f;String\u00a0\u4e0d\u5c5e\u4e8e\u57fa\u7840\u7c7b\u578b&#xff0c;\u57fa\u7840\u7c7b\u578b\u6709 8 \u79cd&#xff1a;byte\u3001boolean\u3001char\u3001short\u3001int\u3001float\u3001long\u3001double&#xff0c;\u800c String \u5c5e\u4e8e\u5bf9\u8c61\u3002<\/p>\n<p>7. java \u4e2d\u64cd\u4f5c\u5b57\u7b26\u4e32\u90fd\u6709\u54ea\u4e9b\u7c7b&#xff1f;\u5b83\u4eec\u4e4b\u95f4\u6709\u4ec0\u4e48\u533a\u522b&#xff1f;\u64cd\u4f5c\u5b57\u7b26\u4e32\u00a0\u7684\u7c7b\u6709&#xff1a;String\u3001StringBuffer\u3001StringBuilder\u3002String \u548c StringBuffer\u3001StringBuilder \u7684\u533a\u522b\u5728\u4e8e String \u58f0\u660e\u7684\u662f\u4e0d\u53ef\u53d8\u7684\u5bf9\u8c61&#xff0c;\u6bcf\u6b21\u64cd\u4f5c\u90fd\u4f1a\u751f\u6210\u65b0\u7684 String \u5bf9\u8c61&#xff0c;\u7136\u540e\u5c06\u6307\u9488\u6307\u5411\u65b0\u7684 String \u5bf9\u8c61&#xff0c;\u800c StringBuffer\u3001StringBuilder \u53ef\u4ee5\u5728\u539f\u6709\u5bf9\u8c61\u7684\u57fa\u7840\u4e0a\u8fdb\u884c\u64cd\u4f5c&#xff0c;\u6240\u4ee5\u5728\u7ecf\u5e38\u6539\u53d8\u5b57\u7b26\u4e32\u5185\u5bb9\u7684\u60c5\u51b5\u4e0b\u6700\u597d\u4e0d\u8981\u4f7f\u7528 String\u3002StringBuffer \u548c StringBuilder \u6700\u5927\u7684\u533a\u522b\u5728\u4e8e&#xff0c;StringBuffer \u662f\u7ebf\u7a0b\u5b89\u5168\u7684&#xff0c;\u800c StringBuilder \u662f\u975e\u7ebf\u7a0b\u5b89\u5168\u7684&#xff0c;\u4f46 StringBuilder \u7684\u6027\u80fd\u5374\u9ad8\u4e8e StringBuffer&#xff0c;\u6240\u4ee5\u5728\u5355\u7ebf\u7a0b\u73af\u5883\u4e0b\u63a8\u8350\u4f7f\u7528 StringBuilder&#xff0c;\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\u63a8\u8350\u4f7f\u7528 StringBuffer\u3002<\/p>\n<p>8. String str&#061;&#034;i&#034;\u4e0e String str&#061;new String(&#034;i&#034;)\u4e00\u6837\u5417&#xff1f;\u4e0d\u4e00\u6837&#xff0c;\u56e0\u4e3a\u5185\u5b58\u7684\u5206\u914d\u65b9\u5f0f\u4e0d\u4e00\u6837\u3002String str&#061;&#034;i&#034;\u7684\u65b9\u5f0f&#xff0c;java \u865a\u62df\u673a\u4f1a\u5c06\u5176\u5206\u914d\u5230\u5e38\u91cf\u6c60\u4e2d&#xff1b;\u800c String str&#061;new String(&#034;i&#034;) \u5219\u4f1a\u88ab\u5206\u5230\u5806\u5185\u5b58\u4e2d\u3002<\/p>\n<p>9. \u5982\u4f55\u5c06\u5b57\u7b26\u4e32\u53cd\u8f6c&#xff1f;\u4f7f\u7528\u00a0StringBuilder \u6216\u8005 stringBuffer \u7684 reverse() \u65b9\u6cd5\u3002<\/p>\n<p>10. String \u7c7b\u7684\u5e38\u7528\u65b9\u6cd5\u90fd\u6709\u90a3\u4e9b&#xff1f;<\/p>\n<ul>\n<li>\n<p>indexOf()&#xff1a;\u8fd4\u56de\u6307\u5b9a\u5b57\u7b26\u7684\u7d22\u5f15\u3002<\/p>\n<\/li>\n<li>\n<p>charAt()&#xff1a;\u8fd4\u56de\u6307\u5b9a\u7d22\u5f15\u5904\u7684\u5b57\u7b26\u3002<\/p>\n<\/li>\n<li>\n<p>replace()&#xff1a;\u5b57\u7b26\u4e32\u66ff\u6362\u3002<\/p>\n<\/li>\n<li>\n<p>trim()&#xff1a;\u53bb\u9664\u5b57\u7b26\u4e32\u4e24\u7aef\u7a7a\u767d\u3002<\/p>\n<\/li>\n<li>\n<p>split()&#xff1a;\u5206\u5272\u5b57\u7b26\u4e32&#xff0c;\u8fd4\u56de\u4e00\u4e2a\u5206\u5272\u540e\u7684\u5b57\u7b26\u4e32\u6570\u7ec4\u3002<\/p>\n<\/li>\n<li>\n<p>getBytes()&#xff1a;\u8fd4\u56de\u5b57\u7b26\u4e32\u7684 byte \u7c7b\u578b\u6570\u7ec4\u3002<\/p>\n<\/li>\n<li>\n<p>length()&#xff1a;\u8fd4\u56de\u5b57\u7b26\u4e32\u957f\u5ea6\u3002<\/p>\n<\/li>\n<li>\n<p>toLowerCase()&#xff1a;\u5c06\u5b57\u7b26\u4e32\u8f6c\u6210\u5c0f\u5199\u5b57\u6bcd\u3002<\/p>\n<\/li>\n<li>\n<p>toUpperCase()&#xff1a;\u5c06\u5b57\u7b26\u4e32\u8f6c\u6210\u5927\u5199\u5b57\u7b26\u3002<\/p>\n<\/li>\n<li>\n<p>substring()&#xff1a;\u622a\u53d6\u5b57\u7b26\u4e32\u3002<\/p>\n<\/li>\n<li>\n<p>equals()&#xff1a;\u5b57\u7b26\u4e32\u6bd4\u8f83\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u7bc7\u5e45\u9650\u5236\u4e0b\u9762\u5c31\u53ea\u80fd\u7ed9\u5927\u5bb6\u5c55\u793a\u5c0f\u518c\u90e8\u5206\u5185\u5bb9\u4e86\u3002\u6574\u7406\u4e86\u4e00\u4efd\u6838\u5fc3\u9762\u8bd5\u7b14\u8bb0\u5305\u62ec\u4e86&#xff1a;Java\u9762\u8bd5\u3001\u573a\u666f\u9898\u3001Spring\u3001JVM\u3001MyBatis\u3001Redis\u3001MySQL\u3001\u5e76\u53d1\u7f16\u7a0b\u3001\u5fae\u670d\u52a1\u3001Linux\u3001Springboot\u3001SpringCloud\u3001MQ\u3001Kafc<\/p>\n<p>\u9700\u8981\u5168\u5957\u9762\u8bd5\u7b14\u8bb0\u53ca\u7b54\u6848<span class=\"link-card-box\"><span class=\"link-title\">\u3010\u70b9\u51fb\u6b64\u5904\u5373\u53ef\/\u514d\u8d39\u83b7\u53d6\u3011\u200b\u200b<\/span><span class=\"link-link\"><img decoding=\"async\" class=\"link-link-icon\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260305081012-69a93a64a24aa.png\" \/>https:\/\/docs.qq.com\/doc\/DQXdYWE9LZ2ZHZ1ho<\/span><\/span><\/p>\n<p>11. \u62bd\u8c61\u7c7b\u5fc5\u987b\u8981\u6709\u62bd\u8c61\u65b9\u6cd5\u5417&#xff1f;\u4e0d\u9700\u8981&#xff0c;\u62bd\u8c61\u7c7b\u4e0d\u4e00\u5b9a\u975e\u8981\u6709\u62bd\u8c61\u65b9\u6cd5\u3002<\/p>\n<ul>\n<li>\n<p>\u666e\u901a\u7c7b\u4e0d\u80fd\u5305\u542b\u62bd\u8c61\u65b9\u6cd5&#xff0c;\u62bd\u8c61\u7c7b\u53ef\u4ee5\u5305\u542b\u62bd\u8c61\u65b9\u6cd5\u3002<\/p>\n<\/li>\n<li>\n<p>\u62bd\u8c61\u7c7b\u4e0d\u80fd\u76f4\u63a5\u5b9e\u4f8b\u5316&#xff0c;\u666e\u901a\u7c7b\u53ef\u4ee5\u76f4\u63a5\u5b9e\u4f8b\u5316\u3002<\/p>\n<\/li>\n<\/ul>\n<p>13. \u62bd\u8c61\u7c7b\u80fd\u4f7f\u7528 final \u4fee\u9970\u5417&#xff1f;\u4e0d\u80fd&#xff0c;\u5b9a\u4e49\u62bd\u8c61\u7c7b\u5c31\u662f\u8ba9\u5176\u4ed6\u7c7b\u7ee7\u627f\u7684&#xff0c;\u5982\u679c\u5b9a\u4e49\u4e3a\u00a0final\u00a0\u00a0\u8be5\u7c7b\u5c31\u4e0d\u80fd\u88ab\u7ee7\u627f&#xff0c;\u8fd9\u6837\u5f7c\u6b64\u5c31\u4f1a\u4ea7\u751f\u77db\u76fe&#xff0c;\u6240\u4ee5 final \u4e0d\u80fd\u4fee\u9970\u62bd\u8c61\u7c7b<\/p>\n<p>14. \u63a5\u53e3\u548c\u62bd\u8c61\u7c7b\u6709\u4ec0\u4e48\u533a\u522b&#xff1f;<\/p>\n<ul>\n<li>\n<p>\u5b9e\u73b0&#xff1a;\u62bd\u8c61\u7c7b\u7684\u5b50\u7c7b\u4f7f\u7528 extends \u6765\u7ee7\u627f&#xff1b;\u63a5\u53e3\u5fc5\u987b\u4f7f\u7528 implements \u6765\u5b9e\u73b0\u63a5\u53e3\u3002<\/p>\n<\/li>\n<li>\n<p>\u6784\u9020\u51fd\u6570&#xff1a;\u62bd\u8c61\u7c7b\u53ef\u4ee5\u6709\u6784\u9020\u51fd\u6570&#xff1b;\u63a5\u53e3\u4e0d\u80fd\u6709\u3002<\/p>\n<\/li>\n<li>\n<p>main \u65b9\u6cd5&#xff1a;\u62bd\u8c61\u7c7b\u53ef\u4ee5\u6709 main \u65b9\u6cd5&#xff0c;\u5e76\u4e14\u6211\u4eec\u80fd\u8fd0\u884c\u5b83&#xff1b;\u63a5\u53e3\u4e0d\u80fd\u6709 main \u65b9\u6cd5\u3002<\/p>\n<\/li>\n<li>\n<p>\u5b9e\u73b0\u6570\u91cf&#xff1a;\u7c7b\u53ef\u4ee5\u5b9e\u73b0\u5f88\u591a\u4e2a\u63a5\u53e3&#xff1b;\u4f46\u662f\u53ea\u80fd\u7ee7\u627f\u4e00\u4e2a\u62bd\u8c61\u7c7b\u3002<\/p>\n<\/li>\n<li>\n<p>\u8bbf\u95ee\u4fee\u9970\u7b26&#xff1a;\u63a5\u53e3\u4e2d\u7684\u65b9\u6cd5\u9ed8\u8ba4\u4f7f\u7528 public \u4fee\u9970&#xff1b;\u62bd\u8c61\u7c7b\u4e2d\u7684\u65b9\u6cd5\u53ef\u4ee5\u662f\u4efb\u610f\u8bbf\u95ee\u4fee\u9970\u7b26\u3002<\/p>\n<\/li>\n<\/ul>\n<p>15. java \u4e2d IO \u6d41\u5206\u4e3a\u51e0\u79cd&#xff1f;\u6309\u529f\u80fd\u6765\u5206&#xff1a;\u8f93\u5165\u6d41&#xff08;input&#xff09;\u3001\u8f93\u51fa\u6d41&#xff08;output&#xff09;\u3002\u6309\u7c7b\u578b\u6765\u5206&#xff1a;\u5b57\u8282\u6d41\u548c\u5b57\u7b26\u6d41\u3002\u5b57\u8282\u6d41\u548c\u5b57\u7b26\u6d41\u7684\u533a\u522b\u662f&#xff1a;\u5b57\u8282\u6d41\u6309 8 \u4f4d\u4f20\u8f93\u4ee5\u5b57\u8282\u4e3a\u5355\u4f4d\u8f93\u5165\u8f93\u51fa\u6570\u636e&#xff0c;\u5b57\u7b26\u6d41\u6309 16 \u4f4d\u4f20\u8f93\u4ee5\u5b57\u7b26\u4e3a\u5355\u4f4d\u8f93\u5165\u8f93\u51fa\u6570\u636e\u3002<\/p>\n<p>16. BIO\u3001NIO\u3001AIO \u6709\u4ec0\u4e48\u533a\u522b&#xff1f;<\/p>\n<ul>\n<li>\n<p>BIO&#xff1a;Block IO \u540c\u6b65\u963b\u585e\u5f0f IO&#xff0c;\u5c31\u662f\u6211\u4eec\u5e73\u5e38\u4f7f\u7528\u7684\u4f20\u7edf IO&#xff0c;\u5b83\u7684\u7279\u70b9\u662f\u6a21\u5f0f\u7b80\u5355\u4f7f\u7528\u65b9\u4fbf&#xff0c;\u5e76\u53d1\u5904\u7406\u80fd\u529b\u4f4e\u3002<\/p>\n<\/li>\n<li>\n<p>NIO&#xff1a;New IO \u540c\u6b65\u975e\u963b\u585e IO&#xff0c;\u662f\u4f20\u7edf IO \u7684\u5347\u7ea7&#xff0c;\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u7aef\u901a\u8fc7 Channel&#xff08;\u901a\u9053&#xff09;\u901a\u8baf&#xff0c;\u5b9e\u73b0\u4e86\u591a\u8def\u590d\u7528\u3002<\/p>\n<\/li>\n<li>\n<p>AIO&#xff1a;Asynchronous IO \u662f NIO \u7684\u5347\u7ea7&#xff0c;\u4e5f\u53eb NIO2&#xff0c;\u5b9e\u73b0\u4e86\u5f02\u6b65\u975e\u5835\u585e IO &#xff0c;\u5f02\u6b65 IO \u7684\u64cd\u4f5c\u57fa\u4e8e\u4e8b\u4ef6\u548c\u56de\u8c03\u673a\u5236\u3002<\/p>\n<\/li>\n<\/ul>\n<p>17. Files \u7684\u5e38\u7528\u65b9\u6cd5\u90fd\u6709\u54ea\u4e9b&#xff1f;<\/p>\n<ul>\n<li>\n<p>Files.exists()&#xff1a;\u68c0\u6d4b\u6587\u4ef6\u8def\u5f84\u662f\u5426\u5b58\u5728\u3002<\/p>\n<\/li>\n<li>\n<p>Files.createFile()&#xff1a;\u521b\u5efa\u6587\u4ef6\u3002<\/p>\n<\/li>\n<li>\n<p>Files.createDirectory()&#xff1a;\u521b\u5efa\u6587\u4ef6\u5939\u3002<\/p>\n<\/li>\n<li>\n<p>Files.delete()&#xff1a;\u5220\u9664\u4e00\u4e2a\u6587\u4ef6\u6216\u76ee\u5f55\u3002<\/p>\n<\/li>\n<li>\n<p>Files.copy()&#xff1a;\u590d\u5236\u6587\u4ef6\u3002<\/p>\n<\/li>\n<li>\n<p>Files.move()&#xff1a;\u79fb\u52a8\u6587\u4ef6\u3002<\/p>\n<\/li>\n<li>\n<p>Files.size()&#xff1a;\u67e5\u770b\u6587\u4ef6\u4e2a\u6570\u3002<\/p>\n<\/li>\n<li>\n<p>Files.read()&#xff1a;\u8bfb\u53d6\u6587\u4ef6\u3002<\/p>\n<\/li>\n<li>\n<p>Files.write()&#xff1a;\u5199\u5165\u6587\u4ef6\u3002<\/p>\n<\/li>\n<\/ul>\n<h5>\u4e8c\u3001\u5bb9\u5668<\/h5>\n<p>18. java \u5bb9\u5668\u90fd\u6709\u54ea\u4e9b&#xff1f;\u5e38\u7528\u5bb9\u5668\u7684\u56fe\u5f55&#xff1a;<\/p>\n<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"434\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260305081012-69a93a64b9a35.jpg\" width=\"600\" \/><\/p>\n<p>\u200b<\/p>\n<p>19. Collection \u548c Collections \u6709\u4ec0\u4e48\u533a\u522b&#xff1f;<\/p>\n<ul>\n<li>\n<p>java.util.Collection \u662f\u4e00\u4e2a\u96c6\u5408\u63a5\u53e3&#xff08;\u96c6\u5408\u7c7b\u7684\u4e00\u4e2a\u9876\u7ea7\u63a5\u53e3&#xff09;\u3002\u5b83\u63d0\u4f9b\u4e86\u5bf9\u96c6\u5408\u5bf9\u8c61\u8fdb\u884c\u57fa\u672c\u64cd\u4f5c\u7684\u901a\u7528\u63a5\u53e3\u65b9\u6cd5\u3002Collection \u63a5\u53e3\u5728 Java \u7c7b\u5e93\u4e2d\u6709\u5f88\u591a\u5177\u4f53\u7684\u5b9e\u73b0\u3002Collection \u63a5\u53e3\u7684\u610f\u4e49\u662f\u4e3a\u5404\u79cd\u5177\u4f53\u7684\u96c6\u5408\u63d0\u4f9b\u4e86\u6700\u5927\u5316\u7684\u7edf\u4e00\u64cd\u4f5c\u65b9\u5f0f&#xff0c;\u5176\u76f4\u63a5\u7ee7\u627f\u63a5\u53e3\u6709 List \u4e0e Set\u3002<\/p>\n<\/li>\n<li>\n<p>Collections \u5219\u662f\u96c6\u5408\u7c7b\u7684\u4e00\u4e2a\u5de5\u5177\u7c7b\/\u5e2e\u52a9\u7c7b&#xff0c;\u5176\u4e2d\u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u9759\u6001\u65b9\u6cd5&#xff0c;\u7528\u4e8e\u5bf9\u96c6\u5408\u4e2d\u5143\u7d20\u8fdb\u884c\u6392\u5e8f\u3001\u641c\u7d22\u4ee5\u53ca\u7ebf\u7a0b\u5b89\u5168\u7b49\u5404\u79cd\u64cd\u4f5c\u3002<\/p>\n<\/li>\n<\/ul>\n<p>20. List\u3001Set\u3001Map \u4e4b\u95f4\u7684\u533a\u522b\u662f\u4ec0\u4e48&#xff1f;<\/p>\n<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"326\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260305081012-69a93a64c9412.jpg\" width=\"720\" \/><\/p>\n<p>\u200b<\/p>\n<p>21. HashMap \u548c Hashtable \u6709\u4ec0\u4e48\u533a\u522b&#xff1f;<\/p>\n<ul>\n<li>\n<p>hashMap \u53bb\u6389\u4e86 HashTable \u7684 contains \u65b9\u6cd5&#xff0c;\u4f46\u662f\u52a0\u4e0a\u4e86 containsValue&#xff08;&#xff09;\u548c containsKey&#xff08;&#xff09;\u65b9\u6cd5\u3002<\/p>\n<\/li>\n<li>\n<p>hashTable \u540c\u6b65\u7684&#xff0c;\u800c HashMap \u662f\u975e\u540c\u6b65\u7684&#xff0c;\u6548\u7387\u4e0a\u903c hashTable \u8981\u9ad8\u3002<\/p>\n<\/li>\n<li>\n<p>hashMap \u5141\u8bb8\u7a7a\u952e\u503c&#xff0c;\u800c hashTable \u4e0d\u5141\u8bb8\u3002<\/p>\n<\/li>\n<\/ul>\n<p>22. \u5982\u4f55\u51b3\u5b9a\u4f7f\u7528 HashMap \u8fd8\u662f TreeMap&#xff1f;\u5bf9\u4e8e\u5728 Map \u4e2d\u63d2\u5165\u3001\u5220\u9664\u548c\u5b9a\u4f4d\u5143\u7d20\u8fd9\u7c7b\u64cd\u4f5c&#xff0c;HashMap \u662f\u6700\u597d\u7684\u9009\u62e9\u3002\u7136\u800c&#xff0c;\u5047\u5982\u4f60\u9700\u8981\u5bf9\u4e00\u4e2a\u6709\u5e8f\u7684 key \u96c6\u5408\u8fdb\u884c\u904d\u5386&#xff0c;TreeMap \u662f\u66f4\u597d\u7684\u9009\u62e9\u3002\u57fa\u4e8e\u4f60\u7684 collection \u7684\u5927\u5c0f&#xff0c;\u4e5f\u8bb8\u5411 HashMap \u4e2d\u6dfb\u52a0\u5143\u7d20\u4f1a\u66f4\u5feb&#xff0c;\u5c06 map \u6362\u4e3a TreeMap \u8fdb\u884c\u6709\u5e8f key \u7684\u904d\u5386\u3002<\/p>\n<p>23. \u8bf4\u4e00\u4e0b HashMap \u7684\u5b9e\u73b0\u539f\u7406&#xff1f;HashMap \u6982\u8ff0&#xff1a; HashMap \u662f\u57fa\u4e8e\u54c8\u5e0c\u8868\u7684 Map \u63a5\u53e3\u7684\u975e\u540c\u6b65\u5b9e\u73b0\u3002\u6b64\u5b9e\u73b0\u63d0\u4f9b\u6240\u6709\u53ef\u9009\u7684\u6620\u5c04\u64cd\u4f5c&#xff0c;\u5e76\u5141\u8bb8\u4f7f\u7528 null \u503c\u548c null \u952e\u3002\u6b64\u7c7b\u4e0d\u4fdd\u8bc1\u6620\u5c04\u7684\u987a\u5e8f&#xff0c;\u7279\u522b\u662f\u5b83\u4e0d\u4fdd\u8bc1\u8be5\u987a\u5e8f\u6052\u4e45\u4e0d\u53d8\u3002HashMap \u7684\u6570\u636e\u7ed3\u6784&#xff1a; \u5728 java \u7f16\u7a0b\u8bed\u8a00\u4e2d&#xff0c;\u6700\u57fa\u672c\u7684\u7ed3\u6784\u5c31\u662f\u4e24\u79cd&#xff0c;\u4e00\u4e2a\u662f\u6570\u7ec4\u00a0&#xff0c;\u53e6\u5916\u4e00\u4e2a\u662f\u6a21\u62df\u6307\u9488&#xff08;\u5f15\u7528&#xff09;&#xff0c;\u6240\u6709\u7684\u6570\u636e\u7ed3\u6784\u90fd\u53ef\u4ee5\u7528\u8fd9\u4e24\u4e2a\u57fa\u672c\u7ed3\u6784\u6765\u6784\u9020\u7684&#xff0c;HashMap \u4e5f\u4e0d\u4f8b\u5916\u3002HashMap \u5b9e\u9645\u4e0a\u662f\u4e00\u4e2a\u201c\u94fe\u8868\u6563\u5217\u201d\u7684\u6570\u636e\u7ed3\u6784&#xff0c;\u5373\u6570\u7ec4\u548c\u94fe\u8868\u7684\u7ed3\u5408\u4f53\u3002<\/p>\n<ul>\n<li>\n<p>HashSet \u5e95\u5c42\u7531 HashMap \u5b9e\u73b0<\/p>\n<\/li>\n<li>\n<p>HashSet \u7684\u503c\u5b58\u653e\u4e8e HashMap \u7684 key \u4e0a<\/p>\n<\/li>\n<li>\n<p>HashMap \u7684 value \u7edf\u4e00\u4e3a PRESENT<\/p>\n<\/li>\n<\/ul>\n<p>25. ArrayList \u548c LinkedList \u7684\u533a\u522b\u662f\u4ec0\u4e48&#xff1f;\u6700\u660e\u663e\u7684\u533a\u522b\u662f ArrrayList \u5e95\u5c42\u7684\u6570\u636e\u7ed3\u6784\u662f\u6570\u7ec4&#xff0c;\u652f\u6301\u968f\u673a\u8bbf\u95ee&#xff0c;\u800c LinkedList \u7684\u5e95\u5c42\u6570\u636e\u7ed3\u6784\u662f\u53cc\u5411\u5faa\u73af\u94fe\u8868&#xff0c;\u4e0d\u652f\u6301\u968f\u673a\u8bbf\u95ee\u3002\u4f7f\u7528\u4e0b\u6807\u8bbf\u95ee\u4e00\u4e2a\u5143\u7d20&#xff0c;ArrayList \u7684\u65f6\u95f4\u590d\u6742\u5ea6\u662f O(1)&#xff0c;\u800c LinkedList \u662f O(n)\u3002<\/p>\n<p>26. \u5982\u4f55\u5b9e\u73b0\u6570\u7ec4\u548c List \u4e4b\u95f4\u7684\u8f6c\u6362&#xff1f;<\/p>\n<ul>\n<li>\n<p>List \u8f6c\u6362\u6210\u4e3a\u6570\u7ec4&#xff1a;\u8c03\u7528 ArrayList \u7684 toArray \u65b9\u6cd5\u3002<\/p>\n<\/li>\n<li>\n<p>\u6570\u7ec4\u8f6c\u6362\u6210\u4e3a List&#xff1a;\u8c03\u7528 Arrays \u7684 asList \u65b9\u6cd5\u3002<\/p>\n<\/li>\n<\/ul>\n<p>27. ArrayList \u548c Vector \u7684\u533a\u522b\u662f\u4ec0\u4e48&#xff1f;<\/p>\n<ul>\n<li>\n<p>Vector \u662f\u540c\u6b65\u7684&#xff0c;\u800c ArrayList \u4e0d\u662f\u3002\u7136\u800c&#xff0c;\u5982\u679c\u4f60\u5bfb\u6c42\u5728\u8fed\u4ee3\u7684\u65f6\u5019\u5bf9\u5217\u8868\u8fdb\u884c\u6539\u53d8&#xff0c;\u4f60\u5e94\u8be5\u4f7f\u7528 CopyOnWriteArrayList\u3002<\/p>\n<\/li>\n<li>\n<p>ArrayList \u6bd4 Vector \u5feb&#xff0c;\u5b83\u56e0\u4e3a\u6709\u540c\u6b65&#xff0c;\u4e0d\u4f1a\u8fc7\u8f7d\u3002<\/p>\n<\/li>\n<li>\n<p>ArrayList \u66f4\u52a0\u901a\u7528&#xff0c;\u56e0\u4e3a\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 Collections \u5de5\u5177\u7c7b\u8f7b\u6613\u5730\u83b7\u53d6\u540c\u6b65\u5217\u8868\u548c\u53ea\u8bfb\u5217\u8868\u3002<\/p>\n<\/li>\n<\/ul>\n<p>28. Array \u548c ArrayList \u6709\u4f55\u533a\u522b&#xff1f;<\/p>\n<ul>\n<li>\n<p>Array \u53ef\u4ee5\u5bb9\u7eb3\u57fa\u672c\u7c7b\u578b\u548c\u5bf9\u8c61&#xff0c;\u800c ArrayList \u53ea\u80fd\u5bb9\u7eb3\u5bf9\u8c61\u3002<\/p>\n<\/li>\n<li>\n<p>Array \u662f\u6307\u5b9a\u5927\u5c0f\u7684&#xff0c;\u800c ArrayList \u5927\u5c0f\u662f\u56fa\u5b9a\u7684\u3002<\/p>\n<\/li>\n<li>\n<p>Array \u6ca1\u6709\u63d0\u4f9b ArrayList \u90a3\u4e48\u591a\u529f\u80fd&#xff0c;\u6bd4\u5982 addAll\u3001removeAll \u548c iterator \u7b49\u3002<\/p>\n<\/li>\n<\/ul>\n<p>29. \u5728 Queue \u4e2d\u00a0poll()\u548c remove()\u6709\u4ec0\u4e48\u533a\u522b&#xff1f;poll() \u548c remove() \u90fd\u662f\u4ece\u961f\u5217\u4e2d\u53d6\u51fa\u4e00\u4e2a\u5143\u7d20&#xff0c;\u4f46\u662f poll() \u5728\u83b7\u53d6\u5143\u7d20\u5931\u8d25\u7684\u65f6\u5019\u4f1a\u8fd4\u56de\u7a7a&#xff0c;\u4f46\u662f remove() \u5931\u8d25\u7684\u65f6\u5019\u4f1a\u629b\u51fa\u5f02\u5e38\u3002<\/p>\n<p>30. \u54ea\u4e9b\u96c6\u5408\u7c7b\u662f\u7ebf\u7a0b\u5b89\u5168\u7684&#xff1f;<\/p>\n<ul>\n<li>\n<p>vector&#xff1a;\u5c31\u6bd4 arraylist \u591a\u4e86\u4e2a\u540c\u6b65\u5316\u673a\u5236&#xff08;\u7ebf\u7a0b\u5b89\u5168&#xff09;&#xff0c;\u56e0\u4e3a\u6548\u7387\u8f83\u4f4e&#xff0c;\u73b0\u5728\u5df2\u7ecf\u4e0d\u592a\u5efa\u8bae\u4f7f\u7528\u3002\u5728 web \u5e94\u7528\u4e2d&#xff0c;\u7279\u522b\u662f\u524d\u53f0\u9875\u9762&#xff0c;\u5f80\u5f80\u6548\u7387&#xff08;\u9875\u9762\u54cd\u5e94\u901f\u5ea6&#xff09;\u662f\u4f18\u5148\u8003\u8651\u7684\u3002<\/p>\n<\/li>\n<li>\n<p>statck&#xff1a;\u5806\u6808\u7c7b&#xff0c;\u5148\u8fdb\u540e\u51fa\u3002<\/p>\n<\/li>\n<li>\n<p>hashtable&#xff1a;\u5c31\u6bd4 hashmap \u591a\u4e86\u4e2a\u7ebf\u7a0b\u5b89\u5168\u3002<\/p>\n<\/li>\n<li>\n<p>enumeration&#xff1a;\u679a\u4e3e&#xff0c;\u76f8\u5f53\u4e8e\u8fed\u4ee3\u5668\u3002<\/p>\n<\/li>\n<\/ul>\n<p>31. \u8fed\u4ee3\u5668 Iterator \u662f\u4ec0\u4e48&#xff1f;\u8fed\u4ee3\u5668\u662f\u4e00\u79cd\u8bbe\u8ba1\u6a21\u5f0f&#xff0c;\u5b83\u662f\u4e00\u4e2a\u5bf9\u8c61&#xff0c;\u5b83\u53ef\u4ee5\u904d\u5386\u5e76\u9009\u62e9\u5e8f\u5217\u4e2d\u7684\u5bf9\u8c61&#xff0c;\u800c\u5f00\u53d1\u4eba\u5458\u4e0d\u9700\u8981\u4e86\u89e3\u8be5\u5e8f\u5217\u7684\u5e95\u5c42\u7ed3\u6784\u3002\u8fed\u4ee3\u5668\u901a\u5e38\u88ab\u79f0\u4e3a\u201c\u8f7b\u91cf\u7ea7\u201d\u5bf9\u8c61&#xff0c;\u56e0\u4e3a\u521b\u5efa\u5b83\u7684\u4ee3\u4ef7\u5c0f\u3002<\/p>\n<p>32. Iterator \u600e\u4e48\u4f7f\u7528&#xff1f;\u6709\u4ec0\u4e48\u7279\u70b9&#xff1f;(1) \u4f7f\u7528\u65b9\u6cd5\u00a0iterator()\u8981\u6c42\u5bb9\u5668\u8fd4\u56de\u4e00\u4e2a Iterator\u3002\u7b2c\u4e00\u6b21\u8c03\u7528 Iterator \u7684 next()\u65b9\u6cd5\u65f6&#xff0c;\u5b83\u8fd4\u56de\u5e8f\u5217\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\u3002\u6ce8\u610f&#xff1a;iterator()\u65b9\u6cd5\u662f java.lang.Iterable \u63a5\u53e3,\u88ab Collection \u7ee7\u627f\u3002(2) \u4f7f\u7528 next()\u83b7\u5f97\u5e8f\u5217\u4e2d\u7684\u4e0b\u4e00\u4e2a\u5143\u7d20\u3002(3) \u4f7f\u7528 hasNext()\u68c0\u67e5\u5e8f\u5217\u4e2d\u662f\u5426\u8fd8\u6709\u5143\u7d20\u3002(4) \u4f7f\u7528 remove()\u5c06\u8fed\u4ee3\u5668\u65b0\u8fd4\u56de\u7684\u5143\u7d20\u5220\u9664\u3002Iterator \u662f Java \u8fed\u4ee3\u5668\u6700\u7b80\u5355\u7684\u5b9e\u73b0&#xff0c;\u4e3a List \u8bbe\u8ba1\u7684 ListIterator \u5177\u6709\u66f4\u591a\u7684\u529f\u80fd&#xff0c;\u5b83\u53ef\u4ee5\u4ece\u4e24\u4e2a\u65b9\u5411\u904d\u5386 List&#xff0c;\u4e5f\u53ef\u4ee5\u4ece List \u4e2d\u63d2\u5165\u548c\u5220\u9664\u5143\u7d20\u3002<\/p>\n<p>33. Iterator \u548c ListIterator \u6709\u4ec0\u4e48\u533a\u522b&#xff1f;<\/p>\n<ul>\n<li>\n<p>Iterator \u53ef\u7528\u6765\u904d\u5386 Set \u548c List \u96c6\u5408&#xff0c;\u4f46\u662f ListIterator \u53ea\u80fd\u7528\u6765\u904d\u5386 List\u3002<\/p>\n<\/li>\n<li>\n<p>Iterator \u5bf9\u96c6\u5408\u53ea\u80fd\u662f\u524d\u5411\u904d\u5386&#xff0c;ListIterator \u65e2\u53ef\u4ee5\u524d\u5411\u4e5f\u53ef\u4ee5\u540e\u5411\u3002<\/p>\n<\/li>\n<li>\n<p>ListIterator \u5b9e\u73b0\u4e86 Iterator \u63a5\u53e3&#xff0c;\u5e76\u5305\u542b\u5176\u4ed6\u7684\u529f\u80fd&#xff0c;\u6bd4\u5982&#xff1a;\u589e\u52a0\u5143\u7d20&#xff0c;\u66ff\u6362\u5143\u7d20&#xff0c;\u83b7\u53d6\u524d\u4e00\u4e2a\u548c\u540e\u4e00\u4e2a\u5143\u7d20\u7684\u7d22\u5f15&#xff0c;\u7b49\u7b49\u3002<\/p>\n<\/li>\n<\/ul>\n<h5>\u4e09\u3001\u591a\u7ebf\u7a0b<\/h5>\n<p>35. \u5e76\u884c\u548c\u5e76\u53d1\u6709\u4ec0\u4e48\u533a\u522b&#xff1f;<\/p>\n<ul>\n<li>\n<p>\u5e76\u884c\u662f\u6307\u4e24\u4e2a\u6216\u8005\u591a\u4e2a\u4e8b\u4ef6\u5728\u540c\u4e00\u65f6\u523b\u53d1\u751f&#xff1b;\u800c\u5e76\u53d1\u662f\u6307\u4e24\u4e2a\u6216\u591a\u4e2a\u4e8b\u4ef6\u5728\u540c\u4e00\u65f6\u95f4\u95f4\u9694\u53d1\u751f\u3002<\/p>\n<\/li>\n<li>\n<p>\u5e76\u884c\u662f\u5728\u4e0d\u540c\u5b9e\u4f53\u4e0a\u7684\u591a\u4e2a\u4e8b\u4ef6&#xff0c;\u5e76\u53d1\u662f\u5728\u540c\u4e00\u5b9e\u4f53\u4e0a\u7684\u591a\u4e2a\u4e8b\u4ef6\u3002<\/p>\n<\/li>\n<li>\n<p>\u5728\u4e00\u53f0\u5904\u7406\u5668\u4e0a\u201c\u540c\u65f6\u201d\u5904\u7406\u591a\u4e2a\u4efb\u52a1&#xff0c;\u5728\u591a\u53f0\u5904\u7406\u5668\u4e0a\u540c\u65f6\u5904\u7406\u591a\u4e2a\u4efb\u52a1\u3002\u5982 hadoop \u5206\u5e03\u5f0f\u96c6\u7fa4\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u6240\u4ee5\u5e76\u53d1\u7f16\u7a0b\u7684\u76ee\u6807\u662f\u5145\u5206\u7684\u5229\u7528\u5904\u7406\u5668\u7684\u6bcf\u4e00\u4e2a\u6838&#xff0c;\u4ee5\u8fbe\u5230\u6700\u9ad8\u7684\u5904\u7406\u6027\u80fd\u3002<\/p>\n<p>36. \u7ebf\u7a0b\u548c\u8fdb\u7a0b\u7684\u533a\u522b&#xff1f;\u7b80\u800c\u8a00\u4e4b&#xff0c;\u8fdb\u7a0b\u662f\u7a0b\u5e8f\u8fd0\u884c\u548c\u8d44\u6e90\u5206\u914d\u7684\u57fa\u672c\u5355\u4f4d&#xff0c;\u4e00\u4e2a\u7a0b\u5e8f\u81f3\u5c11\u6709\u4e00\u4e2a\u8fdb\u7a0b&#xff0c;\u4e00\u4e2a\u8fdb\u7a0b\u81f3\u5c11\u6709\u4e00\u4e2a\u7ebf\u7a0b\u3002\u7ebf\u7a0b\u662f\u8fdb\u7a0b\u7684\u4e00\u4e2a\u5b9e\u4f53&#xff0c;\u662f\u00a0cpu\u00a0\u00a0\u8c03\u5ea6\u548c\u5206\u6d3e\u7684\u57fa\u672c\u5355\u4f4d&#xff0c;\u662f\u6bd4\u7a0b\u5e8f\u66f4\u5c0f\u7684\u80fd\u72ec\u7acb\u8fd0\u884c\u7684\u57fa\u672c\u5355\u4f4d\u3002\u540c\u4e00\u8fdb\u7a0b\u4e2d\u7684\u591a\u4e2a\u7ebf\u7a0b\u4e4b\u95f4\u53ef\u4ee5\u5e76\u53d1\u6267\u884c\u3002<\/p>\n<p>37.\u00a0\u5b88\u62a4\u7ebf\u7a0b\u662f\u4ec0\u4e48&#xff1f;\u5b88\u62a4\u7ebf\u7a0b&#xff08;\u5373 daemon thread&#xff09;&#xff0c;\u662f\u4e2a\u670d\u52a1\u7ebf\u7a0b&#xff0c;\u51c6\u786e\u5730\u6765\u8bf4\u5c31\u662f\u670d\u52a1\u5176\u4ed6\u7684\u7ebf\u7a0b\u3002<\/p>\n<p>38. \u521b\u5efa\u7ebf\u7a0b\u6709\u54ea\u51e0\u79cd\u65b9\u5f0f&#xff1f;\u2460. \u7ee7\u627f Thread \u7c7b\u521b\u5efa\u7ebf\u7a0b\u7c7b\u2461. \u901a\u8fc7 Runnable \u63a5\u53e3\u521b\u5efa\u7ebf\u7a0b\u7c7b\u2462. \u901a\u8fc7 Callable \u548c Future \u521b\u5efa\u7ebf\u7a0b<\/p>\n<p>39. \u8bf4\u4e00\u4e0b runnable \u548c callable \u6709\u4ec0\u4e48\u533a\u522b&#xff1f;<\/p>\n<ul>\n<li>\n<p>Runnable \u63a5\u53e3\u4e2d\u7684 run()\u65b9\u6cd5\u7684\u8fd4\u56de\u503c\u662f void&#xff0c;\u5b83\u505a\u7684\u4e8b\u60c5\u53ea\u662f\u7eaf\u7cb9\u5730\u53bb\u6267\u884c run()\u65b9\u6cd5\u4e2d\u7684\u4ee3\u7801\u800c\u5df2&#xff1b;<\/p>\n<\/li>\n<li>\n<p>Callable \u63a5\u53e3\u4e2d\u7684 call()\u65b9\u6cd5\u662f\u6709\u8fd4\u56de\u503c\u7684&#xff0c;\u662f\u4e00\u4e2a\u6cdb\u578b&#xff0c;\u548c Future\u3001FutureTask \u914d\u5408\u53ef\u4ee5\u7528\u6765\u83b7\u53d6\u5f02\u6b65\u6267\u884c\u7684\u7ed3\u679c\u3002<\/p>\n<\/li>\n<\/ul>\n<p>40. \u7ebf\u7a0b\u6709\u54ea\u4e9b\u72b6\u6001&#xff1f;\u7ebf\u7a0b\u901a\u5e38\u90fd\u6709\u4e94\u79cd\u72b6\u6001&#xff0c;\u521b\u5efa\u3001\u5c31\u7eea\u3001\u8fd0\u884c\u3001\u963b\u585e\u548c\u6b7b\u4ea1\u3002<\/p>\n<p>41. sleep() \u548c wait() \u6709\u4ec0\u4e48\u533a\u522b&#xff1f;sleep()&#xff1a;\u65b9\u6cd5\u662f\u7ebf\u7a0b\u7c7b&#xff08;Thread&#xff09;\u7684\u9759\u6001\u65b9\u6cd5&#xff0c;\u8ba9\u8c03\u7528\u7ebf\u7a0b\u8fdb\u5165\u7761\u7720\u72b6\u6001&#xff0c;\u8ba9\u51fa\u6267\u884c\u673a\u4f1a\u7ed9\u5176\u4ed6\u7ebf\u7a0b&#xff0c;\u7b49\u5230\u4f11\u7720\u65f6\u95f4\u7ed3\u675f\u540e&#xff0c;\u7ebf\u7a0b\u8fdb\u5165\u5c31\u7eea\u72b6\u6001\u548c\u5176\u4ed6\u7ebf\u7a0b\u4e00\u8d77\u7ade\u4e89 cpu \u7684\u6267\u884c\u65f6\u95f4\u3002\u56e0\u4e3a sleep() \u662f static \u9759\u6001\u7684\u65b9\u6cd5&#xff0c;\u4ed6\u4e0d\u80fd\u6539\u53d8\u5bf9\u8c61\u7684\u673a\u9501&#xff0c;\u5f53\u4e00\u4e2a synchronized \u5757\u4e2d\u8c03\u7528\u4e86 sleep() \u65b9\u6cd5&#xff0c;\u7ebf\u7a0b\u867d\u7136\u8fdb\u5165\u4f11\u7720&#xff0c;\u4f46\u662f\u5bf9\u8c61\u7684\u673a\u9501\u6ca1\u6709\u88ab\u91ca\u653e&#xff0c;\u5176\u4ed6\u7ebf\u7a0b\u4f9d\u7136\u65e0\u6cd5\u8bbf\u95ee\u8fd9\u4e2a\u5bf9\u8c61\u3002wait()&#xff1a;wait()\u662f Object \u7c7b\u7684\u65b9\u6cd5&#xff0c;\u5f53\u4e00\u4e2a\u7ebf\u7a0b\u6267\u884c\u5230 wait \u65b9\u6cd5\u65f6&#xff0c;\u5b83\u5c31\u8fdb\u5165\u5230\u4e00\u4e2a\u548c\u8be5\u5bf9\u8c61\u76f8\u5173\u7684\u7b49\u5f85\u6c60&#xff0c;\u540c\u65f6\u91ca\u653e\u5bf9\u8c61\u7684\u673a\u9501&#xff0c;\u4f7f\u5f97\u5176\u4ed6\u7ebf\u7a0b\u80fd\u591f\u8bbf\u95ee&#xff0c;\u53ef\u4ee5\u901a\u8fc7 notify&#xff0c;notifyAll \u65b9\u6cd5\u6765\u5524\u9192\u7b49\u5f85\u7684\u7ebf\u7a0b\u3002<\/p>\n<p>42. notify()\u548c notifyAll()\u6709\u4ec0\u4e48\u533a\u522b&#xff1f;<\/p>\n<ul>\n<li>\n<p>\u5982\u679c\u7ebf\u7a0b\u8c03\u7528\u4e86\u5bf9\u8c61\u7684 wait()\u65b9\u6cd5&#xff0c;\u90a3\u4e48\u7ebf\u7a0b\u4fbf\u4f1a\u5904\u4e8e\u8be5\u5bf9\u8c61\u7684\u7b49\u5f85\u6c60\u4e2d&#xff0c;\u7b49\u5f85\u6c60\u4e2d\u7684\u7ebf\u7a0b\u4e0d\u4f1a\u53bb\u7ade\u4e89\u8be5\u5bf9\u8c61\u7684\u9501\u3002<\/p>\n<\/li>\n<li>\n<p>\u5f53\u6709\u7ebf\u7a0b\u8c03\u7528\u4e86\u5bf9\u8c61\u7684 notifyAll()\u65b9\u6cd5&#xff08;\u5524\u9192\u6240\u6709 wait \u7ebf\u7a0b&#xff09;\u6216 notify()\u65b9\u6cd5&#xff08;\u53ea\u968f\u673a\u5524\u9192\u4e00\u4e2a wait \u7ebf\u7a0b&#xff09;&#xff0c;\u88ab\u5524\u9192\u7684\u7684\u7ebf\u7a0b\u4fbf\u4f1a\u8fdb\u5165\u8be5\u5bf9\u8c61\u7684\u9501\u6c60\u4e2d&#xff0c;\u9501\u6c60\u4e2d\u7684\u7ebf\u7a0b\u4f1a\u53bb\u7ade\u4e89\u8be5\u5bf9\u8c61\u9501\u3002\u4e5f\u5c31\u662f\u8bf4&#xff0c;\u8c03\u7528\u4e86 notify \u540e\u53ea\u8981\u4e00\u4e2a\u7ebf\u7a0b\u4f1a\u7531\u7b49\u5f85\u6c60\u8fdb\u5165\u9501\u6c60&#xff0c;\u800c notifyAll \u4f1a\u5c06\u8be5\u5bf9\u8c61\u7b49\u5f85\u6c60\u5185\u7684\u6240\u6709\u7ebf\u7a0b\u79fb\u52a8\u5230\u9501\u6c60\u4e2d&#xff0c;\u7b49\u5f85\u9501\u7ade\u4e89\u3002<\/p>\n<\/li>\n<li>\n<p>\u4f18\u5148\u7ea7\u9ad8\u7684\u7ebf\u7a0b\u7ade\u4e89\u5230\u5bf9\u8c61\u9501\u7684\u6982\u7387\u5927&#xff0c;\u5047\u82e5\u67d0\u7ebf\u7a0b\u6ca1\u6709\u7ade\u4e89\u5230\u8be5\u5bf9\u8c61\u9501&#xff0c;\u5b83\u8fd8\u4f1a\u7559\u5728\u9501\u6c60\u4e2d&#xff0c;\u552f\u6709\u7ebf\u7a0b\u518d\u6b21\u8c03\u7528 wait()\u65b9\u6cd5&#xff0c;\u5b83\u624d\u4f1a\u91cd\u65b0\u56de\u5230\u7b49\u5f85\u6c60\u4e2d\u3002\u800c\u7ade\u4e89\u5230\u5bf9\u8c61\u9501\u7684\u7ebf\u7a0b\u5219\u7ee7\u7eed\u5f80\u4e0b\u6267\u884c&#xff0c;\u76f4\u5230\u6267\u884c\u5b8c\u4e86 synchronized \u4ee3\u7801\u5757&#xff0c;\u5b83\u4f1a\u91ca\u653e\u6389\u8be5\u5bf9\u8c61\u9501&#xff0c;\u8fd9\u65f6\u9501\u6c60\u4e2d\u7684\u7ebf\u7a0b\u4f1a\u7ee7\u7eed\u7ade\u4e89\u8be5\u5bf9\u8c61\u9501\u3002<\/p>\n<\/li>\n<\/ul>\n<p>43. \u7ebf\u7a0b\u7684 run()\u548c start()\u6709\u4ec0\u4e48\u533a\u522b&#xff1f;start()\u65b9\u6cd5\u6765\u542f\u52a8\u4e00\u4e2a\u7ebf\u7a0b&#xff0c;\u771f\u6b63\u5b9e\u73b0\u4e86\u591a\u7ebf\u7a0b\u8fd0\u884c\u3002\u8fd9\u65f6\u65e0\u9700\u7b49\u5f85 run \u65b9\u6cd5\u4f53\u4ee3\u7801\u6267\u884c\u5b8c\u6bd5&#xff0c;\u53ef\u4ee5\u76f4\u63a5\u7ee7\u7eed\u6267\u884c\u4e0b\u9762\u7684\u4ee3\u7801&#xff1b; \u8fd9\u65f6\u6b64\u7ebf\u7a0b\u662f\u5904\u4e8e\u5c31\u7eea\u72b6\u6001&#xff0c; \u5e76\u6ca1\u6709\u8fd0\u884c\u3002 \u7136\u540e\u901a\u8fc7\u6b64 Thread \u7c7b\u8c03\u7528\u65b9\u6cd5 run()\u6765\u5b8c\u6210\u5176\u8fd0\u884c\u72b6\u6001&#xff0c; \u8fd9\u91cc\u65b9\u6cd5 run()\u79f0\u4e3a\u7ebf\u7a0b\u4f53&#xff0c;\u5b83\u5305\u542b\u4e86\u8981\u6267\u884c\u7684\u8fd9\u4e2a\u7ebf\u7a0b\u7684\u5185\u5bb9&#xff0c; Run \u65b9\u6cd5\u8fd0\u884c\u7ed3\u675f&#xff0c; \u6b64\u7ebf\u7a0b\u7ec8\u6b62\u3002\u7136\u540e CPU \u518d\u8c03\u5ea6\u5176\u5b83\u7ebf\u7a0b\u3002run()\u65b9\u6cd5\u662f\u5728\u672c\u7ebf\u7a0b\u91cc\u7684&#xff0c;\u53ea\u662f\u7ebf\u7a0b\u91cc\u7684\u4e00\u4e2a\u51fd\u6570,\u800c\u4e0d\u662f\u591a\u7ebf\u7a0b\u7684\u3002 \u5982\u679c\u76f4\u63a5\u8c03\u7528 run(),\u5176\u5b9e\u5c31\u76f8\u5f53\u4e8e\u662f\u8c03\u7528\u4e86\u4e00\u4e2a\u666e\u901a\u51fd\u6570\u800c\u5df2&#xff0c;\u76f4\u63a5\u5f85\u7528 run()\u65b9\u6cd5\u5fc5\u987b\u7b49\u5f85 run()\u65b9\u6cd5\u6267\u884c\u5b8c\u6bd5\u624d\u80fd\u6267\u884c\u4e0b\u9762\u7684\u4ee3\u7801&#xff0c;\u6240\u4ee5\u6267\u884c\u8def\u5f84\u8fd8\u662f\u53ea\u6709\u4e00\u6761&#xff0c;\u6839\u672c\u5c31\u6ca1\u6709\u7ebf\u7a0b\u7684\u7279\u5f81&#xff0c;\u6240\u4ee5\u5728\u591a\u7ebf\u7a0b\u6267\u884c\u65f6\u8981\u4f7f\u7528 start()\u65b9\u6cd5\u800c\u4e0d\u662f run()\u65b9\u6cd5\u3002<\/p>\n<p>44. \u521b\u5efa\u7ebf\u7a0b\u6c60\u6709\u54ea\u51e0\u79cd\u65b9\u5f0f&#xff1f;\u2460. newFixedThreadPool(int nThreads)\u521b\u5efa\u4e00\u4e2a\u56fa\u5b9a\u957f\u5ea6\u7684\u7ebf\u7a0b\u6c60&#xff0c;\u6bcf\u5f53\u63d0\u4ea4\u4e00\u4e2a\u4efb\u52a1\u5c31\u521b\u5efa\u4e00\u4e2a\u7ebf\u7a0b&#xff0c;\u76f4\u5230\u8fbe\u5230\u7ebf\u7a0b\u6c60\u7684\u6700\u5927\u6570\u91cf&#xff0c;\u8fd9\u65f6\u7ebf\u7a0b\u89c4\u6a21\u5c06\u4e0d\u518d\u53d8\u5316&#xff0c;\u5f53\u7ebf\u7a0b\u53d1\u751f\u672a\u9884\u671f\u7684\u9519\u8bef\u800c\u7ed3\u675f\u65f6&#xff0c;\u7ebf\u7a0b\u6c60\u4f1a\u8865\u5145\u4e00\u4e2a\u65b0\u7684\u7ebf\u7a0b\u3002\u2461. newCachedThreadPool()\u521b\u5efa\u4e00\u4e2a\u53ef\u7f13\u5b58\u7684\u7ebf\u7a0b\u6c60&#xff0c;\u5982\u679c\u7ebf\u7a0b\u6c60\u7684\u89c4\u6a21\u8d85\u8fc7\u4e86\u5904\u7406\u9700\u6c42&#xff0c;\u5c06\u81ea\u52a8\u56de\u6536\u7a7a\u95f2\u7ebf\u7a0b&#xff0c;\u800c\u5f53\u9700\u6c42\u589e\u52a0\u65f6&#xff0c;\u5219\u53ef\u4ee5\u81ea\u52a8\u6dfb\u52a0\u65b0\u7ebf\u7a0b&#xff0c;\u7ebf\u7a0b\u6c60\u7684\u89c4\u6a21\u4e0d\u5b58\u5728\u4efb\u4f55\u9650\u5236\u3002\u2462. newSingleThreadExecutor()\u8fd9\u662f\u4e00\u4e2a\u5355\u7ebf\u7a0b\u7684 Executor&#xff0c;\u5b83\u521b\u5efa\u5355\u4e2a\u5de5\u4f5c\u7ebf\u7a0b\u6765\u6267\u884c\u4efb\u52a1&#xff0c;\u5982\u679c\u8fd9\u4e2a\u7ebf\u7a0b\u5f02\u5e38\u7ed3\u675f&#xff0c;\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u6765\u66ff\u4ee3\u5b83&#xff1b;\u5b83\u7684\u7279\u70b9\u662f\u80fd\u786e\u4fdd\u4f9d\u7167\u4efb\u52a1\u5728\u961f\u5217\u4e2d\u7684\u987a\u5e8f\u6765\u4e32\u884c\u6267\u884c\u3002\u2463. newScheduledThreadPool(int corePoolSize)\u521b\u5efa\u4e86\u4e00\u4e2a\u56fa\u5b9a\u957f\u5ea6\u7684\u7ebf\u7a0b\u6c60&#xff0c;\u800c\u4e14\u4ee5\u5ef6\u8fdf\u6216\u5b9a\u65f6\u7684\u65b9\u5f0f\u6765\u6267\u884c\u4efb\u52a1&#xff0c;\u7c7b\u4f3c\u4e8e Timer\u3002<\/p>\n<p>\u00a0\u7bc7\u5e45\u9650\u5236\u4e0b\u9762\u5c31\u53ea\u80fd\u7ed9\u5927\u5bb6\u5c55\u793a\u5c0f\u518c\u90e8\u5206\u5185\u5bb9\u4e86\u3002\u6574\u7406\u4e86\u4e00\u4efd\u6838\u5fc3\u9762\u8bd5\u7b14\u8bb0\u5305\u62ec\u4e86&#xff1a;Java\u9762\u8bd5\u3001\u573a\u666f\u9898\u3001Spring\u3001JVM\u3001MyBatis\u3001Redis\u3001MySQL\u3001\u5e76\u53d1\u7f16\u7a0b\u3001\u5fae\u670d\u52a1\u3001Linux\u3001Springboot\u3001SpringCloud\u3001MQ\u3001Kafc<\/p>\n<p>\u9700\u8981\u5168\u5957\u9762\u8bd5\u7b14\u8bb0\u53ca\u7b54\u6848<span class=\"link-card-box\"><span class=\"link-title\">\u3010\u70b9\u51fb\u6b64\u5904\u5373\u53ef\/\u514d\u8d39\u83b7\u53d6\u3011\u200b\u200b<\/span><span class=\"link-link\"><img decoding=\"async\" class=\"link-link-icon\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260305081012-69a93a64a24aa.png\" \/>https:\/\/docs.qq.com\/doc\/DQXdYWE9LZ2ZHZ1ho<\/span><\/span><\/p>\n<\/p>\n<p>45. \u7ebf\u7a0b\u6c60\u90fd\u6709\u54ea\u4e9b\u72b6\u6001&#xff1f;\u7ebf\u7a0b\u6c60\u6709 5 \u79cd\u72b6\u6001&#xff1a;Running\u3001ShutDown\u3001Stop\u3001Tidying\u3001Terminated\u3002\u7ebf\u7a0b\u6c60\u5404\u4e2a\u72b6\u6001\u5207\u6362\u6846\u67b6\u56fe&#xff1a;<\/p>\n<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"406\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260305081012-69a93a64d803e.jpg\" width=\"1033\" \/><\/p>\n<p>\u200b<\/p>\n<p>46. \u7ebf\u7a0b\u6c60\u4e2d submit()\u548c execute()\u65b9\u6cd5\u6709\u4ec0\u4e48\u533a\u522b&#xff1f;<\/p>\n<ul>\n<li>\n<p>\u63a5\u6536\u7684\u53c2\u6570\u4e0d\u4e00\u6837<\/p>\n<\/li>\n<li>\n<p>submit \u6709\u8fd4\u56de\u503c&#xff0c;\u800c execute \u6ca1\u6709<\/p>\n<\/li>\n<li>\n<p>submit \u65b9\u4fbf Exception \u5904\u7406<\/p>\n<\/li>\n<\/ul>\n<p>47. \u5728 java \u7a0b\u5e8f\u4e2d\u600e\u4e48\u4fdd\u8bc1\u591a\u7ebf\u7a0b\u7684\u8fd0\u884c\u5b89\u5168&#xff1f;\u7ebf\u7a0b\u5b89\u5168\u5728\u4e09\u4e2a\u65b9\u9762\u4f53\u73b0&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u539f\u5b50\u6027&#xff1a;\u63d0\u4f9b\u4e92\u65a5\u8bbf\u95ee&#xff0c;\u540c\u4e00\u65f6\u523b\u53ea\u80fd\u6709\u4e00\u4e2a\u7ebf\u7a0b\u5bf9\u6570\u636e\u8fdb\u884c\u64cd\u4f5c&#xff0c;&#xff08;atomic,synchronized&#xff09;&#xff1b;<\/p>\n<\/li>\n<li>\n<p>\u53ef\u89c1\u6027&#xff1a;\u4e00\u4e2a\u7ebf\u7a0b\u5bf9\u4e3b\u5185\u5b58\u7684\u4fee\u6539\u53ef\u4ee5\u53ca\u65f6\u5730\u88ab\u5176\u4ed6\u7ebf\u7a0b\u770b\u5230&#xff0c;&#xff08;synchronized,volatile&#xff09;&#xff1b;<\/p>\n<\/li>\n<li>\n<p>\u6709\u5e8f\u6027&#xff1a;\u4e00\u4e2a\u7ebf\u7a0b\u89c2\u5bdf\u5176\u4ed6\u7ebf\u7a0b\u4e2d\u7684\u6307\u4ee4\u6267\u884c\u987a\u5e8f&#xff0c;\u7531\u4e8e\u6307\u4ee4\u91cd\u6392\u5e8f&#xff0c;\u8be5\u89c2\u5bdf\u7ed3\u679c\u4e00\u822c\u6742\u4e71\u65e0\u5e8f&#xff0c;&#xff08;happens-before \u539f\u5219&#xff09;\u3002<\/p>\n<\/li>\n<\/ul>\n<p>48. \u591a\u7ebf\u7a0b\u9501\u7684\u5347\u7ea7\u539f\u7406\u662f\u4ec0\u4e48&#xff1f;\u5728 Java \u4e2d&#xff0c;\u9501\u5171\u6709 4 \u79cd\u72b6\u6001&#xff0c;\u7ea7\u522b\u4ece\u4f4e\u5230\u9ad8\u4f9d\u6b21\u4e3a&#xff1a;\u65e0\u72b6\u6001\u9501&#xff0c;\u504f\u5411\u9501&#xff0c;\u8f7b\u91cf\u7ea7\u9501\u548c\u91cd\u91cf\u7ea7\u9501\u72b6\u6001&#xff0c;\u8fd9\u51e0\u4e2a\u72b6\u6001\u4f1a\u968f\u7740\u7ade\u4e89\u60c5\u51b5\u9010\u6e10\u5347\u7ea7\u3002\u9501\u53ef\u4ee5\u5347\u7ea7\u4f46\u4e0d\u80fd\u964d\u7ea7\u3002\u9501\u5347\u7ea7\u7684\u56fe\u793a\u8fc7\u7a0b&#xff1a;<\/p>\n<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"333\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260305081013-69a93a650a5fe.jpg\" width=\"600\" \/><\/p>\n<p>\u200b<\/p>\n<p>49. \u4ec0\u4e48\u662f\u6b7b\u9501&#xff1f;\u6b7b\u9501\u662f\u6307\u4e24\u4e2a\u6216\u4e24\u4e2a\u4ee5\u4e0a\u7684\u8fdb\u7a0b\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d&#xff0c;\u7531\u4e8e\u7ade\u4e89\u8d44\u6e90\u6216\u8005\u7531\u4e8e\u5f7c\u6b64\u901a\u4fe1\u800c\u9020\u6210\u7684\u4e00\u79cd\u963b\u585e\u7684\u73b0\u8c61&#xff0c;\u82e5\u65e0\u5916\u529b\u4f5c\u7528&#xff0c;\u5b83\u4eec\u90fd\u5c06\u65e0\u6cd5\u63a8\u8fdb\u4e0b\u53bb\u3002<\/p>\n<p>50. \u600e\u4e48\u9632\u6b62\u6b7b\u9501&#xff1f;\u6b7b\u9501\u7684\u56db\u4e2a\u5fc5\u8981\u6761\u4ef6&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u4e92\u65a5\u6761\u4ef6&#xff1a;\u8fdb\u7a0b\u5bf9\u6240\u5206\u914d\u5230\u7684\u8d44\u6e90\u4e0d\u5141\u8bb8\u5176\u4ed6\u8fdb\u7a0b\u8fdb\u884c\u8bbf\u95ee&#xff0c;\u82e5\u5176\u4ed6\u8fdb\u7a0b\u8bbf\u95ee\u8be5\u8d44\u6e90&#xff0c;\u53ea\u80fd\u7b49\u5f85&#xff0c;\u76f4\u81f3\u5360\u6709\u8be5\u8d44\u6e90\u7684\u8fdb\u7a0b\u4f7f\u7528\u5b8c\u6210\u540e\u91ca\u653e\u8be5\u8d44\u6e90<\/p>\n<\/li>\n<li>\n<p>\u8bf7\u6c42\u548c\u4fdd\u6301\u6761\u4ef6&#xff1a;\u8fdb\u7a0b\u83b7\u5f97\u4e00\u5b9a\u7684\u8d44\u6e90\u4e4b\u540e&#xff0c;\u53c8\u5bf9\u5176\u4ed6\u8d44\u6e90\u53d1\u51fa\u8bf7\u6c42&#xff0c;\u4f46\u662f\u8be5\u8d44\u6e90\u53ef\u80fd\u88ab\u5176\u4ed6\u8fdb\u7a0b\u5360\u6709&#xff0c;\u6b64\u4e8b\u8bf7\u6c42\u963b\u585e&#xff0c;\u4f46\u53c8\u5bf9\u81ea\u5df1\u83b7\u5f97\u7684\u8d44\u6e90\u4fdd\u6301\u4e0d\u653e<\/p>\n<\/li>\n<li>\n<p>\u4e0d\u53ef\u5265\u593a\u6761\u4ef6&#xff1a;\u662f\u6307\u8fdb\u7a0b\u5df2\u83b7\u5f97\u7684\u8d44\u6e90&#xff0c;\u5728\u672a\u5b8c\u6210\u4f7f\u7528\u4e4b\u524d&#xff0c;\u4e0d\u53ef\u88ab\u5265\u593a&#xff0c;\u53ea\u80fd\u5728\u4f7f\u7528\u5b8c\u540e\u81ea\u5df1\u91ca\u653e<\/p>\n<\/li>\n<li>\n<p>\u73af\u8def\u7b49\u5f85\u6761\u4ef6&#xff1a;\u662f\u6307\u8fdb\u7a0b\u53d1\u751f\u6b7b\u9501\u540e&#xff0c;\u82e5\u5e72\u8fdb\u7a0b\u4e4b\u95f4\u5f62\u6210\u4e00\u79cd\u5934\u5c3e\u76f8\u63a5\u7684\u5faa\u73af\u7b49\u5f85\u8d44\u6e90\u5173\u7cfb<\/p>\n<\/li>\n<\/ul>\n<p>51. ThreadLocal \u662f\u4ec0\u4e48&#xff1f;\u6709\u54ea\u4e9b\u4f7f\u7528\u573a\u666f&#xff1f;\u7ebf\u7a0b\u5c40\u90e8\u53d8\u91cf\u662f\u5c40\u9650\u4e8e\u7ebf\u7a0b\u5185\u90e8\u7684\u53d8\u91cf&#xff0c;\u5c5e\u4e8e\u7ebf\u7a0b\u81ea\u8eab\u6240\u6709&#xff0c;\u4e0d\u5728\u591a\u4e2a\u7ebf\u7a0b\u95f4\u5171\u4eab\u3002Java \u63d0\u4f9b ThreadLocal \u7c7b\u6765\u652f\u6301\u7ebf\u7a0b\u5c40\u90e8\u53d8\u91cf&#xff0c;\u662f\u4e00\u79cd\u5b9e\u73b0\u7ebf\u7a0b\u5b89\u5168\u7684\u65b9\u5f0f\u3002\u4f46\u662f\u5728\u7ba1\u7406\u73af\u5883\u4e0b&#xff08;\u5982 web \u670d\u52a1\u5668&#xff09;\u4f7f\u7528\u7ebf\u7a0b\u5c40\u90e8\u53d8\u91cf\u7684\u65f6\u5019\u8981\u7279\u522b\u5c0f\u5fc3&#xff0c;\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b&#xff0c;\u5de5\u4f5c\u7ebf\u7a0b\u7684\u751f\u547d\u5468\u671f\u6bd4\u4efb\u4f55\u5e94\u7528\u53d8\u91cf\u7684\u751f\u547d\u5468\u671f\u90fd\u8981\u957f\u3002\u4efb\u4f55\u7ebf\u7a0b\u5c40\u90e8\u53d8\u91cf\u4e00\u65e6\u5728\u5de5\u4f5c\u5b8c\u6210\u540e\u6ca1\u6709\u91ca\u653e&#xff0c;Java \u5e94\u7528\u5c31\u5b58\u5728\u5185\u5b58\u6cc4\u9732\u7684\u98ce\u9669\u3002<\/p>\n<p>52.\u8bf4\u4e00\u4e0b synchronized \u5e95\u5c42\u5b9e\u73b0\u539f\u7406&#xff1f;synchronized \u53ef\u4ee5\u4fdd\u8bc1\u65b9\u6cd5\u6216\u8005\u4ee3\u7801\u5757\u5728\u8fd0\u884c\u65f6&#xff0c;\u540c\u4e00\u65f6\u523b\u53ea\u6709\u4e00\u4e2a\u65b9\u6cd5\u53ef\u4ee5\u8fdb\u5165\u5230\u4e34\u754c\u533a&#xff0c;\u540c\u65f6\u5b83\u8fd8\u53ef\u4ee5\u4fdd\u8bc1\u5171\u4eab\u53d8\u91cf\u7684\u5185\u5b58\u53ef\u89c1\u6027\u3002Java \u4e2d\u6bcf\u4e00\u4e2a\u5bf9\u8c61\u90fd\u53ef\u4ee5\u4f5c\u4e3a\u9501&#xff0c;\u8fd9\u662f synchronized \u5b9e\u73b0\u540c\u6b65\u7684\u57fa\u7840&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u666e\u901a\u540c\u6b65\u65b9\u6cd5&#xff0c;\u9501\u662f\u5f53\u524d\u5b9e\u4f8b\u5bf9\u8c61<\/p>\n<\/li>\n<li>\n<p>\u9759\u6001\u540c\u6b65\u65b9\u6cd5&#xff0c;\u9501\u662f\u5f53\u524d\u7c7b\u7684 class \u5bf9\u8c61<\/p>\n<\/li>\n<li>\n<p>\u540c\u6b65\u65b9\u6cd5\u5757&#xff0c;\u9501\u662f\u62ec\u53f7\u91cc\u9762\u7684\u5bf9\u8c61<\/p>\n<\/li>\n<\/ul>\n<p>53. synchronized \u548c volatile \u7684\u533a\u522b\u662f\u4ec0\u4e48&#xff1f;<\/p>\n<ul>\n<li>\n<p>volatile \u672c\u8d28\u662f\u5728\u544a\u8bc9 jvm \u5f53\u524d\u53d8\u91cf\u5728\u5bc4\u5b58\u5668&#xff08;\u5de5\u4f5c\u5185\u5b58&#xff09;\u4e2d\u7684\u503c\u662f\u4e0d\u786e\u5b9a\u7684&#xff0c;\u9700\u8981\u4ece\u4e3b\u5b58\u4e2d\u8bfb\u53d6&#xff1b; synchronized \u5219\u662f\u9501\u5b9a\u5f53\u524d\u53d8\u91cf&#xff0c;\u53ea\u6709\u5f53\u524d\u7ebf\u7a0b\u53ef\u4ee5\u8bbf\u95ee\u8be5\u53d8\u91cf&#xff0c;\u5176\u4ed6\u7ebf\u7a0b\u88ab\u963b\u585e\u4f4f\u3002<\/p>\n<\/li>\n<li>\n<p>volatile \u4ec5\u80fd\u4f7f\u7528\u5728\u53d8\u91cf\u7ea7\u522b&#xff1b;synchronized \u5219\u53ef\u4ee5\u4f7f\u7528\u5728\u53d8\u91cf\u3001\u65b9\u6cd5\u3001\u548c\u7c7b\u7ea7\u522b\u7684\u3002<\/p>\n<\/li>\n<li>\n<p>volatile \u4ec5\u80fd\u5b9e\u73b0\u53d8\u91cf\u7684\u4fee\u6539\u53ef\u89c1\u6027&#xff0c;\u4e0d\u80fd\u4fdd\u8bc1\u539f\u5b50\u6027&#xff1b;\u800c synchronized \u5219\u53ef\u4ee5\u4fdd\u8bc1\u53d8\u91cf\u7684\u4fee\u6539\u53ef\u89c1\u6027\u548c\u539f\u5b50\u6027\u3002<\/p>\n<\/li>\n<li>\n<p>volatile \u4e0d\u4f1a\u9020\u6210\u7ebf\u7a0b\u7684\u963b\u585e&#xff1b;synchronized \u53ef\u80fd\u4f1a\u9020\u6210\u7ebf\u7a0b\u7684\u963b\u585e\u3002<\/p>\n<\/li>\n<li>\n<p>volatile \u6807\u8bb0\u7684\u53d8\u91cf\u4e0d\u4f1a\u88ab\u7f16\u8bd1\u5668\u4f18\u5316&#xff1b;synchronized \u6807\u8bb0\u7684\u53d8\u91cf\u53ef\u4ee5\u88ab\u7f16\u8bd1\u5668\u4f18\u5316\u3002<\/p>\n<\/li>\n<\/ul>\n<p>54. synchronized \u548c Lock \u6709\u4ec0\u4e48\u533a\u522b&#xff1f;<\/p>\n<ul>\n<li>\n<p>\u9996\u5148 synchronized \u662f java \u5185\u7f6e\u5173\u952e\u5b57&#xff0c;\u5728 jvm \u5c42\u9762&#xff0c;Lock \u662f\u4e2a java \u7c7b&#xff1b;<\/p>\n<\/li>\n<li>\n<p>synchronized \u65e0\u6cd5\u5224\u65ad\u662f\u5426\u83b7\u53d6\u9501\u7684\u72b6\u6001&#xff0c;Lock \u53ef\u4ee5\u5224\u65ad\u662f\u5426\u83b7\u53d6\u5230\u9501&#xff1b;<\/p>\n<\/li>\n<li>\n<p>synchronized \u4f1a\u81ea\u52a8\u91ca\u653e\u9501(a \u7ebf\u7a0b\u6267\u884c\u5b8c\u540c\u6b65\u4ee3\u7801\u4f1a\u91ca\u653e\u9501 &#xff1b;b \u7ebf\u7a0b\u6267\u884c\u8fc7\u7a0b\u4e2d\u53d1\u751f\u5f02\u5e38\u4f1a\u91ca\u653e\u9501)&#xff0c;Lock \u9700\u5728 finally \u4e2d\u624b\u5de5\u91ca\u653e\u9501&#xff08;unlock()\u65b9\u6cd5\u91ca\u653e\u9501&#xff09;&#xff0c;\u5426\u5219\u5bb9\u6613\u9020\u6210\u7ebf\u7a0b\u6b7b\u9501&#xff1b;<\/p>\n<\/li>\n<li>\n<p>\u7528 synchronized \u5173\u952e\u5b57\u7684\u4e24\u4e2a\u7ebf\u7a0b 1 \u548c\u7ebf\u7a0b 2&#xff0c;\u5982\u679c\u5f53\u524d\u7ebf\u7a0b 1 \u83b7\u5f97\u9501&#xff0c;\u7ebf\u7a0b 2 \u7ebf\u7a0b\u7b49\u5f85\u3002\u5982\u679c\u7ebf\u7a0b 1 \u963b\u585e&#xff0c;\u7ebf\u7a0b 2 \u5219\u4f1a\u4e00\u76f4\u7b49\u5f85\u4e0b\u53bb&#xff0c;\u800c Lock \u9501\u5c31\u4e0d\u4e00\u5b9a\u4f1a\u7b49\u5f85\u4e0b\u53bb&#xff0c;\u5982\u679c\u5c1d\u8bd5\u83b7\u53d6\u4e0d\u5230\u9501&#xff0c;\u7ebf\u7a0b\u53ef\u4ee5\u4e0d\u7528\u4e00\u76f4\u7b49\u5f85\u5c31\u7ed3\u675f\u4e86&#xff1b;<\/p>\n<\/li>\n<li>\n<p>synchronized \u7684\u9501\u53ef\u91cd\u5165\u3001\u4e0d\u53ef\u4e2d\u65ad\u3001\u975e\u516c\u5e73&#xff0c;\u800c Lock \u9501\u53ef\u91cd\u5165\u3001\u53ef\u5224\u65ad\u3001\u53ef\u516c\u5e73&#xff08;\u4e24\u8005\u7686\u53ef&#xff09;&#xff1b;<\/p>\n<\/li>\n<li>\n<p>Lock \u9501\u9002\u5408\u5927\u91cf\u540c\u6b65\u7684\u4ee3\u7801\u7684\u540c\u6b65\u95ee\u9898&#xff0c;synchronized \u9501\u9002\u5408\u4ee3\u7801\u5c11\u91cf\u7684\u540c\u6b65\u95ee\u9898\u3002<\/p>\n<\/li>\n<\/ul>\n<p>55. synchronized \u548c ReentrantLock \u533a\u522b\u662f\u4ec0\u4e48&#xff1f;synchronized \u662f\u548c if\u3001else\u3001for\u3001while \u4e00\u6837\u7684\u5173\u952e\u5b57&#xff0c;ReentrantLock \u662f\u7c7b&#xff0c;\u8fd9\u662f\u4e8c\u8005\u7684\u672c\u8d28\u533a\u522b\u3002<\/p>\n<ul>\n<li>\n<p>ReentrantLock \u53ef\u4ee5\u5bf9\u83b7\u53d6\u9501\u7684\u7b49\u5f85\u65f6\u95f4\u8fdb\u884c\u8bbe\u7f6e&#xff0c;\u8fd9\u6837\u5c31\u907f\u514d\u4e86\u6b7b\u9501<\/p>\n<\/li>\n<li>\n<p>ReentrantLock \u53ef\u4ee5\u83b7\u53d6\u5404\u79cd\u9501\u7684\u4fe1\u606f<\/p>\n<\/li>\n<li>\n<p>ReentrantLock \u53ef\u4ee5\u7075\u6d3b\u5730\u5b9e\u73b0\u591a\u8def\u901a\u77e5<\/p>\n<\/li>\n<\/ul>\n<p>\u53e6\u5916&#xff0c;\u4e8c\u8005\u7684\u9501\u673a\u5236\u5176\u5b9e\u4e5f\u662f\u4e0d\u4e00\u6837\u7684:ReentrantLock \u5e95\u5c42\u8c03\u7528\u7684\u662f Unsafe \u7684 park \u65b9\u6cd5\u52a0\u9501&#xff0c;synchronized \u64cd\u4f5c\u7684\u5e94\u8be5\u662f\u5bf9\u8c61\u5934\u4e2d mark word\u3002<\/p>\n<p>56. \u8bf4\u4e00\u4e0b atomic \u7684\u539f\u7406&#xff1f;Atomic \u5305\u4e2d\u7684\u7c7b\u57fa\u672c\u7684\u7279\u6027\u5c31\u662f\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b&#xff0c;\u5f53\u6709\u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u5bf9\u5355\u4e2a&#xff08;\u5305\u62ec\u57fa\u672c\u7c7b\u578b\u53ca\u5f15\u7528\u7c7b\u578b&#xff09;\u53d8\u91cf\u8fdb\u884c\u64cd\u4f5c\u65f6&#xff0c;\u5177\u6709\u6392\u4ed6\u6027&#xff0c;\u5373\u5f53\u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u5bf9\u8be5\u53d8\u91cf\u7684\u503c\u8fdb\u884c\u66f4\u65b0\u65f6&#xff0c;\u4ec5\u6709\u4e00\u4e2a\u7ebf\u7a0b\u80fd\u6210\u529f&#xff0c;\u800c\u672a\u6210\u529f\u7684\u7ebf\u7a0b\u53ef\u4ee5\u5411\u81ea\u65cb\u9501\u4e00\u6837&#xff0c;\u7ee7\u7eed\u5c1d\u8bd5&#xff0c;\u4e00\u76f4\u7b49\u5230\u6267\u884c\u6210\u529f\u3002<\/p>\n<\/p>\n<h5>\u56db\u3001\u53cd\u5c04<\/h5>\n<p>57. \u4ec0\u4e48\u662f\u53cd\u5c04&#xff1f;\u53cd\u5c04\u4e3b\u8981\u662f\u6307\u7a0b\u5e8f\u53ef\u4ee5\u8bbf\u95ee\u3001\u68c0\u6d4b\u548c\u4fee\u6539\u5b83\u672c\u8eab\u72b6\u6001\u6216\u884c\u4e3a\u7684\u4e00\u79cd\u80fd\u529b Java \u53cd\u5c04&#xff1a;\u5728 Java \u8fd0\u884c\u65f6\u73af\u5883\u4e2d&#xff0c;\u5bf9\u4e8e\u4efb\u610f\u4e00\u4e2a\u7c7b&#xff0c;\u80fd\u5426\u77e5\u9053\u8fd9\u4e2a\u7c7b\u6709\u54ea\u4e9b\u5c5e\u6027\u548c\u65b9\u6cd5&#xff1f;\u5bf9\u4e8e\u4efb\u610f\u4e00\u4e2a\u5bf9\u8c61&#xff0c;\u80fd\u5426\u8c03\u7528\u5b83\u7684\u4efb\u610f\u4e00\u4e2a\u65b9\u6cd5 Java \u53cd\u5c04\u673a\u5236\u4e3b\u8981\u63d0\u4f9b\u4e86\u4ee5\u4e0b\u529f\u80fd&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u5728\u8fd0\u884c\u65f6\u5224\u65ad\u4efb\u610f\u4e00\u4e2a\u5bf9\u8c61\u6240\u5c5e\u7684\u7c7b\u3002<\/p>\n<\/li>\n<li>\n<p>\u5728\u8fd0\u884c\u65f6\u6784\u9020\u4efb\u610f\u4e00\u4e2a\u7c7b\u7684\u5bf9\u8c61\u3002<\/p>\n<\/li>\n<li>\n<p>\u5728\u8fd0\u884c\u65f6\u5224\u65ad\u4efb\u610f\u4e00\u4e2a\u7c7b\u6240\u5177\u6709\u7684\u6210\u5458\u53d8\u91cf\u548c\u65b9\u6cd5\u3002<\/p>\n<\/li>\n<li>\n<p>\u5728\u8fd0\u884c\u65f6\u8c03\u7528\u4efb\u610f\u4e00\u4e2a\u5bf9\u8c61\u7684\u65b9\u6cd5\u3002<\/p>\n<\/li>\n<\/ul>\n<p>58. \u4ec0\u4e48\u662f java \u5e8f\u5217\u5316&#xff1f;\u4ec0\u4e48\u60c5\u51b5\u4e0b\u9700\u8981\u5e8f\u5217\u5316&#xff1f;\u7b80\u5355\u8bf4\u5c31\u662f\u4e3a\u4e86\u4fdd\u5b58\u5728\u5185\u5b58\u4e2d\u7684\u5404\u79cd\u5bf9\u8c61\u7684\u72b6\u6001&#xff08;\u4e5f\u5c31\u662f\u5b9e\u4f8b\u53d8\u91cf&#xff0c;\u4e0d\u662f\u65b9\u6cd5&#xff09;&#xff0c;\u5e76\u4e14\u53ef\u4ee5\u628a\u4fdd\u5b58\u7684\u5bf9\u8c61\u72b6\u6001\u518d\u8bfb\u51fa\u6765\u3002\u867d\u7136\u4f60\u53ef\u4ee5\u7528\u4f60\u81ea\u5df1\u7684\u5404\u79cd\u5404\u6837\u7684\u65b9\u6cd5\u6765\u4fdd\u5b58 object states&#xff0c;\u4f46\u662f Java \u7ed9\u4f60\u63d0\u4f9b\u4e00\u79cd\u5e94\u8be5\u6bd4\u4f60\u81ea\u5df1\u597d\u7684\u4fdd\u5b58\u5bf9\u8c61\u72b6\u6001\u7684\u673a\u5236&#xff0c;\u90a3\u5c31\u662f\u5e8f\u5217\u5316\u3002\u4ec0\u4e48\u60c5\u51b5\u4e0b\u9700\u8981\u5e8f\u5217\u5316&#xff1a;a&#xff09;\u5f53\u4f60\u60f3\u628a\u7684\u5185\u5b58\u4e2d\u7684\u5bf9\u8c61\u72b6\u6001\u4fdd\u5b58\u5230\u4e00\u4e2a\u6587\u4ef6\u4e2d\u6216\u8005\u6570\u636e\u5e93\u4e2d\u65f6\u5019&#xff1b;b&#xff09;\u5f53\u4f60\u60f3\u7528\u5957\u63a5\u5b57\u5728\u7f51\u7edc\u4e0a\u4f20\u9001\u5bf9\u8c61\u7684\u65f6\u5019&#xff1b;c&#xff09;\u5f53\u4f60\u60f3\u901a\u8fc7 RMI \u4f20\u8f93\u5bf9\u8c61\u7684\u65f6\u5019&#xff1b;<\/p>\n<p>59. \u52a8\u6001\u4ee3\u7406\u662f\u4ec0\u4e48&#xff1f;\u6709\u54ea\u4e9b\u5e94\u7528&#xff1f;\u52a8\u6001\u4ee3\u7406&#xff1a;\u5f53\u60f3\u8981\u7ed9\u5b9e\u73b0\u4e86\u67d0\u4e2a\u63a5\u53e3\u7684\u7c7b\u4e2d\u7684\u65b9\u6cd5&#xff0c;\u52a0\u4e00\u4e9b\u989d\u5916\u7684\u5904\u7406\u3002\u6bd4\u5982\u8bf4\u52a0\u65e5\u5fd7&#xff0c;\u52a0\u4e8b\u52a1\u7b49\u3002\u52a8\u6001\u4ee3\u7406\u7684\u5e94\u7528&#xff1a;<\/p>\n<ul>\n<li>\n<p>Spring \u7684 AOP<\/p>\n<\/li>\n<li>\n<p>\u52a0\u4e8b\u52a1<\/p>\n<\/li>\n<li>\n<p>\u52a0\u6743\u9650<\/p>\n<\/li>\n<li>\n<p>\u52a0\u65e5\u5fd7<\/p>\n<\/li>\n<\/ul>\n<p>60. \u600e\u4e48\u5b9e\u73b0\u52a8\u6001\u4ee3\u7406\u9996\u5148\u5fc5\u987b\u5b9a\u4e49\u4e00\u4e2a\u63a5\u53e3&#xff0c;\u8fd8\u8981\u6709\u4e00\u4e2a InvocationHandler(\u5c06\u5b9e\u73b0\u63a5\u53e3\u7684\u7c7b\u7684\u5bf9\u8c61\u4f20\u9012\u7ed9\u5b83)\u5904\u7406\u7c7b\u3002\u518d\u6709\u4e00\u4e2a\u5de5\u5177\u7c7b Proxy(\u4e60\u60ef\u6027\u5c06\u5176\u79f0\u4e3a\u4ee3\u7406\u7c7b&#xff0c;\u56e0\u4e3a\u8c03\u7528\u4ed6\u7684 newInstance()\u53ef\u4ee5\u4ea7\u751f\u4ee3\u7406\u5bf9\u8c61,\u5176\u5b9e\u4ed6\u53ea\u662f\u4e00\u4e2a\u4ea7\u751f\u4ee3\u7406\u5bf9\u8c61\u7684\u5de5\u5177\u7c7b&#xff09;\u3002\u5229\u7528\u5230 InvocationHandler&#xff0c;\u62fc\u63a5\u4ee3\u7406\u7c7b\u6e90\u7801&#xff0c;\u5c06\u5176\u7f16\u8bd1\u751f\u6210\u4ee3\u7406\u7c7b\u7684\u4e8c\u8fdb\u5236\u7801&#xff0c;\u5229\u7528\u52a0\u8f7d\u5668\u52a0\u8f7d&#xff0c;\u5e76\u5c06\u5176\u5b9e\u4f8b\u5316\u4ea7\u751f\u4ee3\u7406\u5bf9\u8c61&#xff0c;\u6700\u540e\u8fd4\u56de\u3002<\/p>\n<p>\u00a0\u7bc7\u5e45\u9650\u5236\u4e0b\u9762\u5c31\u53ea\u80fd\u7ed9\u5927\u5bb6\u5c55\u793a\u5c0f\u518c\u90e8\u5206\u5185\u5bb9\u4e86\u3002\u6574\u7406\u4e86\u4e00\u4efd\u6838\u5fc3\u9762\u8bd5\u7b14\u8bb0\u5305\u62ec\u4e86&#xff1a;Java\u9762\u8bd5\u3001\u573a\u666f\u9898\u3001Spring\u3001JVM\u3001MyBatis\u3001Redis\u3001MySQL\u3001\u5e76\u53d1\u7f16\u7a0b\u3001\u5fae\u670d\u52a1\u3001Linux\u3001Springboot\u3001SpringCloud\u3001MQ\u3001Kafc<\/p>\n<p>\u9700\u8981\u5168\u5957\u9762\u8bd5\u7b14\u8bb0\u53ca\u7b54\u6848<span class=\"link-card-box\"><span class=\"link-title\">\u3010\u70b9\u51fb\u6b64\u5904\u5373\u53ef\/\u514d\u8d39\u83b7\u53d6\u3011\u200b\u200b<\/span><span class=\"link-link\"><img decoding=\"async\" class=\"link-link-icon\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260305081012-69a93a64a24aa.png\" \/>https:\/\/docs.qq.com\/doc\/DQXdYWE9LZ2ZHZ1ho<\/span><\/span><\/p>\n<\/p>\n<h5>\u4e94\u3001\u5bf9\u8c61\u62f7\u8d1d<\/h5>\n<h5>\u516d\u3001Java Web<\/h5>\n<p>64. jsp \u548c servlet \u6709\u4ec0\u4e48\u533a\u522b&#xff1f;<\/p>\n<p>65. jsp \u6709\u54ea\u4e9b\u5185\u7f6e\u5bf9\u8c61&#xff1f;\u4f5c\u7528\u5206\u522b\u662f\u4ec0\u4e48&#xff1f;<\/p>\n<p>66. \u8bf4\u4e00\u4e0b jsp \u7684 4 \u79cd\u4f5c\u7528\u57df&#xff1f;<\/p>\n<p>67. session \u548c cookie \u6709\u4ec0\u4e48\u533a\u522b&#xff1f;<\/p>\n<p>68. \u8bf4\u4e00\u4e0b session \u7684\u5de5\u4f5c\u539f\u7406&#xff1f;<\/p>\n<p>69. \u5982\u679c\u5ba2\u6237\u7aef\u7981\u6b62 cookie \u80fd\u5b9e\u73b0 session \u8fd8\u80fd\u7528\u5417&#xff1f;<\/p>\n<p>70. spring mvc \u548c struts \u7684\u533a\u522b\u662f\u4ec0\u4e48&#xff1f;&#8230;&#8230;Java \u9762\u8bd5\u9898\u76ee\u5f55<\/p>\n<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"754\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260305081013-69a93a6518d98.jpg\" width=\"456\" \/><\/p>\n<p>MyBatis \u9762\u8bd5\u7bc7<\/p>\n<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"298\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260305081013-69a93a652cb41.jpg\" width=\"600\" \/><\/p>\n<p>\u200b<\/p>\n<p>Zookeeper \u9762\u8bd5\u7bc7<\/p>\n<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"285\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260305081013-69a93a653ca2f.jpg\" width=\"600\" \/><\/p>\n<p>\u200b<\/p>\n<p>Java \u57fa\u7840\u7bc7&#xff08;45 \u9053\u9762\u8bd5\u9898&#xff09;<\/p>\n<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"453\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260305081013-69a93a654a34b.jpg\" width=\"600\" \/><\/p>\n<p>\u200b<\/p>\n<p>\u5b57\u7b26\u4e32 &amp;&amp;\u96c6\u5408\u7bc7&#xff08;74 \u9053&#xff09;<\/p>\n<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"537\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260305081013-69a93a655a0a9.jpg\" width=\"720\" \/><\/p>\n<p>\u200b<\/p>\n<p>\u5e76\u53d1\u7f16\u7a0b\u7bc7&#xff08;79 \u9053&#xff09;<\/p>\n<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"560\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260305081013-69a93a65704d6.jpg\" width=\"720\" \/><\/p>\n<p>\u200b<\/p>\n<p>JVM \u7bc7&#xff08;56 \u9053&#xff09;<\/p>\n<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"509\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260305081013-69a93a658585a.jpg\" width=\"720\" \/><\/p>\n<p>\u200b<\/p>\n<p>\u6570\u636e\u7ed3\u6784\u4e0e\u7b97\u6cd5&#xff08;56 \u9053&#xff09;<\/p>\n<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"502\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260305081013-69a93a6598046.jpg\" width=\"720\" \/><\/p>\n<p>\u200b<\/p>\n<p>MySQL \u7bc7&#xff08;59 \u9053&#xff09;<\/p>\n<p>\u00a0\u7bc7\u5e45\u9650\u5236\u4e0b\u9762\u5c31\u53ea\u80fd\u7ed9\u5927\u5bb6\u5c55\u793a\u5c0f\u518c\u90e8\u5206\u5185\u5bb9\u4e86\u3002\u6574\u7406\u4e86\u4e00\u4efd\u6838\u5fc3\u9762\u8bd5\u7b14\u8bb0\u5305\u62ec\u4e86&#xff1a;Java\u9762\u8bd5\u3001\u573a\u666f\u9898\u3001Spring\u3001JVM\u3001MyBatis\u3001Redis\u3001MySQL\u3001\u5e76\u53d1\u7f16\u7a0b\u3001\u5fae\u670d\u52a1\u3001Linux\u3001Springboot\u3001SpringCloud\u3001MQ\u3001Kafc<\/p>\n<p>\u9700\u8981\u5168\u5957\u9762\u8bd5\u7b14\u8bb0\u53ca\u7b54\u6848<span class=\"link-card-box\"><span class=\"link-title\">\u3010\u70b9\u51fb\u6b64\u5904\u5373\u53ef\/\u514d\u8d39\u83b7\u53d6\u3011\u200b\u200b<\/span><span class=\"link-link\"><img decoding=\"async\" class=\"link-link-icon\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260305081012-69a93a64a24aa.png\" \/>https:\/\/docs.qq.com\/doc\/DQXdYWE9LZ2ZHZ1ho<\/span><\/span><\/p>\n<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"436\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260305081013-69a93a65ab410.jpg\" width=\"600\" \/><\/p>\n<p>\u200b<\/p>\n<p>\u53e6\u5916\u8fd8\u9644\u5e26\u4e86 52 \u6761 SQL \u4f18\u5316\u7b56\u7565 \u4ee5\u53ca\u4e00\u5343\u884c SQL \u547d\u4ee4 Redis \u7bc7&#xff08;48 \u9053&#xff09;<\/p>\n<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"431\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/03\/20260305081013-69a93a65bab47.jpg\" width=\"720\" \/><\/p>\n<p>\u200b<\/p>\n<p>Mongo \u7bc7&#xff08;83 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