{"id":56049,"date":"2025-08-14T12:05:24","date_gmt":"2025-08-14T04:05:24","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/56049.html"},"modified":"2025-08-14T12:05:24","modified_gmt":"2025-08-14T04:05:24","slug":"java%e7%9a%84%e6%8a%bd%e8%b1%a1%e7%b1%bb%e4%b8%8e%e6%8e%a5%e5%8f%a3%ef%bc%88%e4%b8%80%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/56049.html","title":{"rendered":"Java\u7684\u62bd\u8c61\u7c7b\u4e0e\u63a5\u53e3\uff08\u4e00\uff09"},"content":{"rendered":"<p>\u524d\u6392\u63d0\u9192&#xff1a;\u672c\u7bc7\u6587\u7ae0\u8f83\u957f&#xff0c;\u8bf7\u8010\u5fc3\u89c2\u770b&#xff1b;\u5bcc\u542b\u7684\u77e5\u8bc6\u70b9\u3001\u5e72\u8d27\u8f83\u591a&#xff0c;\u5982\u679c\u770b\u7684\u6bd4\u8f83\u8ff7\u7cca&#xff0c;\u53ef\u5206\u4e24\u6b21\u89c2\u770b\u6216\u91cd\u590d\u89c2\u770b\u3002<\/p>\n<p>\u770b\u5230\u8fd9\u4e2a\u6807\u9898\u6709\u4eba\u53ef\u80fd\u4f1a\u95ee\u4e86&#xff0c;\u62bd\u8c61\u7c7b\u662f\u4ec0\u4e48&#xff1f;\u63a5\u53e3\u53c8\u662f\u4ec0\u4e48&#xff1f;\u62bd\u8c61\u7c7b\u548c\u6211\u4eec\u524d\u9762\u6240\u5b66\u7684\u7c7b\u4e0e\u5bf9\u8c61\u7c7b\u4f3c\u5417&#xff1f;\u5177\u4f53\u53c8\u6709\u4ec0\u4e48\u533a\u522b&#xff1f;\u522b\u7740\u6025&#xff0c;\u73b0\u5728\u5f00\u59cb\u9010\u9879\u8bb2\u89e3\u3002<\/p>\n<h2>&#xff08;1&#xff09;\u62bd\u8c61\u7c7b<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"1058\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250814040504-689d6070386ad.png\" width=\"2407\" \/><\/p>\n<p>\u6709\u51e0\u4e2a\u9700\u8981\u6ce8\u610f\u7684\u70b9&#xff1a;<\/p>\n<p>1.\u62bd\u8c61\u7c7b\u548c\u666e\u901a\u7c7b\u533a\u522b\u5728\u4e8e&#xff1a;\u62bd\u8c61\u7c7b\u4e2d\u53ef\u4ee5\u5305\u542b\u62bd\u8c61\u65b9\u6cd5&#xff1b;\u6ca1\u6709\u62bd\u8c61\u65b9\u6cd5\u7684\u4e0d\u4e00\u5b9a\u4e0d\u662f\u62bd\u8c61\u7c7b&#xff0c;\u4f46\u662f\u6709\u62bd\u8c61\u65b9\u6cd5\u7684\u4e00\u5b9a\u662f\u62bd\u8c61\u7c7b\u3002<\/p>\n<p>2.\u62bd\u8c61\u7c7b\u4e00\u822c\u662f\u7531\u00a0 <span style=\"color:#fe2c24\">\u4fee\u9970\u7b26&#043;abstract&#043;\u65b9\u6cd5<\/span>\u00a0 \u6765\u8868\u793a\u7684&#xff0c;\u8fd9\u79cd\u88ab abstract \u4fee\u9970\u7684\u65b9\u6cd5\u6211\u4eec\u79f0\u4e4b\u4e3a\u62bd\u8c61\u65b9\u6cd5&#xff0c;\u62bd\u8c61\u65b9\u6cd5\u4e2d\u53ef\u4ee5\u4e0d\u7528\u53bb\u5b9e\u73b0&#xff08;\u53ef\u4ee5\u6ca1\u6709\u65b9\u6cd5\u4f53&#xff09;\u3002\u4e3a\u4ec0\u4e48\u5462&#xff1f;\u89c1\u4e0b\u9762\u76843\u3002<\/p>\n<p>3.\u5982\u679c\u4e00\u4e2a\u666e\u901a\u7c7b\u7ee7\u627f\u4e86\u8fd9\u4e2a\u62bd\u8c61\u7c7b&#xff0c;\u90a3\u4e48\u6b64\u65f6\u8fd9\u4e2a\u666e\u901a\u7c7b\u5fc5\u987b\u91cd\u5199\u8fd9\u4e2a\u62bd\u8c61\u7c7b\u5f53\u4e2d\u7684\u62bd\u8c61\u65b9\u6cd5&#xff0c;\u5426\u5219\u4f1a\u76f4\u63a5\u62a5\u9519\u3002<\/p>\n<p>4.\u62bd\u8c61\u7c7b\u4e0d\u80fd\u88ab\u5b9e\u4f8b\u5316\u3002\u4f46\u53ef\u4ee5\u901a\u8fc7\u533f\u540d\u5bf9\u8c61\u6765\u7c7b\u4f3c\u4f7f\u7528\u5b9e\u4f8b\u5316\u7684\u529f\u80fd&#xff1b;\u5982\u4e0b\u56fe&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"862\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250814040507-689d60733cd87.png\" width=\"1807\" \/><\/p>\n<p>5.\u5982\u4e0b\u56fe<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"229\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250814040509-689d607560f96.png\" width=\"552\" \/><\/p>\n<p>6. \u62bd\u8c61\u7c7b\u4e5f\u662f\u7c7b&#xff0c;\u5185\u90e8\u53ef\u4ee5\u5305\u542b\u666e\u901a\u65b9\u6cd5&#xff08;\u9700\u8981\u6709\u5b9e\u73b0&#xff09;\u548c\u5c5e\u6027&#xff08;\u6210\u5458\u53d8\u91cf&#xff09;&#xff0c;\u751a\u81f3\u6784\u9020\u65b9\u6cd5\u3002<\/p>\n<p>7.\u62bd\u8c61\u7c7b\u5fc5\u987b\u88ab\u7ee7\u627f&#xff0c;\u5e76\u4e14\u7ee7\u627f\u540e\u5b50\u7c7b\u8981\u91cd\u5199\u7236\u7c7b\u4e2d\u7684\u62bd\u8c61\u65b9\u6cd5&#xff0c;<span style=\"color:#fe2c24\">\u5426\u5219\u5b50\u7c7b\u4e5f\u5f97\u662f\u62bd\u8c61\u7c7b<\/span>&#xff0c;\u5fc5\u987b\u8981\u4f7f\u7528 abstract \u4fee\u9970\u3002<\/p>\n<h2>&#xff08;2&#xff09;\u63a5\u53e3<\/h2>\n<p>\u5728\u73b0\u5b9e\u751f\u6d3b\u4e2d&#xff0c;\u63a5\u53e3\u7684\u4f8b\u5b50\u6bd4\u6bd4\u7686\u662f&#xff0c;\u6bd4\u5982:\u7b14\u8bb0\u672c\u4e0a\u7684USB\u53e3&#xff0c;\u7535\u6e90\u63d2\u5ea7\u7b49\u3002<\/p>\n<p>\u7535\u8111\u7684USB\u53e3\u4e0a&#xff0c;\u53ef\u4ee5\u63d2:U\u76d8\u3001\u9f20\u6807\u3001\u952e\u76d8\u7b49\u6240\u6709\u7b26\u5408USB\u534f\u8bae\u7684\u8bbe\u5907\u3002<\/p>\n<p>\u7535\u6e90\u63d2\u5ea7\u63d2\u5b54\u4e0a&#xff0c;\u53ef\u4ee5\u63d2:\u7535\u8111\u3001\u7535\u89c6\u673a\u3001\u7535\u996d\u7172\u7b49\u6240\u6709\u7b26\u5408\u89c4\u8303\u7684\u8bbe\u5907\u3002<\/p>\n<p>\u901a\u8fc7\u4e0a\u8ff0\u4f8b\u5b50\u53ef\u4ee5\u770b\u51fa:\u63a5\u53e3\u5c31\u662f<span style=\"color:#ff9900\">\u516c\u5171\u7684\u884c\u4e3a\u89c4\u8303\u6807\u51c6<\/span>&#xff0c;\u5927\u5bb6\u5728\u5b9e\u73b0\u65f6&#xff0c;\u53ea\u8981\u7b26\u5408\u89c4\u8303\u6807\u51c6&#xff0c;\u5c31\u53ef\u4ee5\u901a\u7528\u3002\u5728Java\u4e2d&#xff0c;\u63a5\u53e3\u53ef\u4ee5\u770b\u6210\u662f:\u591a\u4e2a\u7c7b\u7684\u516c\u5171\u89c4\u8303&#xff0c;\u5b83\u662f\u4e00\u79cd\u5f15\u7528\u6570\u636e\u7c7b\u578b\u3002<\/p>\n<p>\u63a5\u53e3\u7684\u8bed\u6cd5\u89c4\u5219&#xff0c;\u8bf7\u770b\u4e0b\u56fe&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"1012\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250814040511-689d60775610c.png\" width=\"1603\" \/><\/p>\n<p>\u7f16\u8bd1\u65f6\u7684\u6ce8\u610f\u4e8b\u9879&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"815\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250814040512-689d6078b208d.png\" width=\"2317\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"275\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250814040514-689d607a3b166.png\" width=\"2397\" \/><\/p>\n<p>\u6ce8\u610f:<\/p>\n<p>1.\u5b50\u7c7b\u548c\u7236\u7c7b\u4e4b\u95f4\u662f extends \u7ee7\u627f\u5173\u7cfb&#xff0c;\u7c7b\u4e0e\u63a5\u53e3\u4e4b\u95f4\u662f implements \u5b9e\u73b0\u5173\u7cfb\u3002<\/p>\n<p>2.\u63a5\u53e3\u867d\u7136\u4e0d\u662f\u7c7b&#xff0c;\u4f46\u662f\u63a5\u53e3\u7f16\u8bd1\u5b8c\u6210\u540e\u5b57\u8282\u7801\u6587\u4ef6\u7684\u540e\u7f00\u683c\u5f0f\u4e5f\u662f .class<\/p>\n<p>3.\u5982\u679c\u7c7b\u6ca1\u6709\u5b9e\u73b0\u63a5\u53e3\u4e2d\u7684\u6240\u6709\u7684\u62bd\u8c61\u65b9\u6cd5&#xff0c;\u5219\u7c7b\u5fc5\u987b\u8bbe\u7f6e\u4e3a\u62bd\u8c61\u7c7b.<\/p>\n<p>4.jdk8\u4e2d:\u63a5\u53e3\u4e2d\u8fd8\u53ef\u4ee5\u5305\u542bdefault\u65b9\u6cd5\u3002<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0\u4e0d\u77e5\u9053\u5927\u5bb6\u53d1\u73b0\u4e86\u5417&#xff0c;\u63a5\u53e3\u548c\u62bd\u8c61\u7c7b\u4e4b\u95f4\u6709\u4e9b\u7279\u70b9\u662f\u76f8\u540c\u7684&#xff0c;\u8fd9\u91cc\u6211\u5efa\u8bae\u5927\u5bb6\u6700\u597d\u53ef\u4ee5\u81ea\u5df1\u603b\u7ed3\u4ee5\u4e0b\u5b83\u4eec\u7684\u5f02\u540c\u70b9&#xff0c;\u5e76\u81ea\u5df1\u5199\u4e0b\u6765\u3002\u4e0b\u9762\u662f\u6211\u7ed9\u51fa\u7684\u53c2\u8003\u7b54\u6848&#xff1a;<\/p>\n<p>\u62bd\u8c61\u7c7b\u548c\u63a5\u53e3\u7684\u6838\u5fc3\u533a\u522b\u5982\u4e0b&#xff1a;<br \/>\n\u00a0<br \/>\n1. \u5b9a\u4e49\u4e0e\u5173\u952e\u5b57<br \/>\n\u00a0<br \/>\n\u00a0\u62bd\u8c61\u7c7b&#xff1a;\u4f7f\u7528\u00a0abstract class\u00a0\u5b9a\u4e49&#xff0c;\u5305\u542b\u62bd\u8c61\u65b9\u6cd5&#xff08;\u65e0\u5b9e\u73b0&#xff09;\u548c\u5177\u4f53\u65b9\u6cd5&#xff08;\u6709\u5b9e\u73b0&#xff09;&#xff0c;\u4e5f\u53ef\u4ee5\u6ca1\u6709\u62bd\u8c61\u65b9\u6cd5\u3002<br \/>\n\u00a0<br \/>\n\u63a5\u53e3&#xff1a;\u4f7f\u7528\u00a0interface\u00a0\u5b9a\u4e49&#xff08;Java 8&#043;\u540e\u53ef\u5305\u542b\u9ed8\u8ba4\u65b9\u6cd5\u548c\u9759\u6001\u65b9\u6cd5&#xff09;&#xff0c;\u65e9\u671f\u53ea\u80fd\u6709\u62bd\u8c61\u65b9\u6cd5\u548c\u5e38\u91cf&#xff0c;\u4e0d\u80fd\u6709\u5177\u4f53\u5b9e\u73b0\u3002<br \/>\n\u00a0<br \/>\n2. \u7ee7\u627f\u4e0e\u5b9e\u73b0<br \/>\n\u00a0<br \/>\n\u62bd\u8c61\u7c7b&#xff1a;\u5b50\u7c7b\u901a\u8fc7\u00a0extends\u00a0\u7ee7\u627f&#xff0c;\u4e00\u4e2a\u7c7b\u53ea\u80fd\u7ee7\u627f\u4e00\u4e2a\u62bd\u8c61\u7c7b&#xff08;\u5355\u7ee7\u627f&#xff09;\u3002<\/p>\n<p>\u00a0 \u63a5\u53e3&#xff1a;\u7c7b\u901a\u8fc7\u00a0implements\u00a0\u5b9e\u73b0&#xff0c;\u4e00\u4e2a\u7c7b\u53ef\u4ee5\u5b9e\u73b0\u591a\u4e2a\u63a5\u53e3&#xff08;\u591a\u5b9e\u73b0&#xff09;\u3002<br \/>\n\u00a0<br \/>\n3. \u6210\u5458\u53d8\u91cf<br \/>\n\u00a0<br \/>\n\u62bd\u8c61\u7c7b&#xff1a;\u53ef\u4ee5\u6709\u5404\u79cd\u7c7b\u578b\u7684\u6210\u5458\u53d8\u91cf&#xff08;\u79c1\u6709\u3001\u4fdd\u62a4\u3001\u516c\u6709\u7b49&#xff09;&#xff0c;\u53d8\u91cf\u53ef\u4ee5\u88ab\u7ee7\u627f\u548c\u4fee\u6539\u3002<br \/>\n\u00a0<br \/>\n\u63a5\u53e3&#xff1a;\u6210\u5458\u53d8\u91cf\u9ed8\u8ba4\u662f\u00a0public static final\u00a0&#xff08;\u5e38\u91cf&#xff09;&#xff0c;\u5fc5\u987b\u521d\u59cb\u5316&#xff0c;\u4e14\u4e0d\u80fd\u88ab\u4fee\u6539\u3002<br \/>\n\u00a0<br \/>\n4. \u6784\u9020\u65b9\u6cd5<br \/>\n\u00a0<br \/>\n\u62bd\u8c61\u7c7b&#xff1a;\u53ef\u4ee5\u6709\u6784\u9020\u65b9\u6cd5&#xff0c;\u7528\u4e8e\u5b50\u7c7b\u521d\u59cb\u5316\u65f6\u8c03\u7528\u3002<br \/>\n\u00a0<br \/>\n\u63a5\u53e3&#xff1a;\u4e0d\u80fd\u6709\u6784\u9020\u65b9\u6cd5&#xff0c;\u56e0\u4e3a\u63a5\u53e3\u4e0d\u80fd\u88ab\u5b9e\u4f8b\u5316\u3002<br \/>\n\u00a0<br \/>\n5. \u8bbe\u8ba1\u76ee\u7684<br \/>\n\u00a0<br \/>\n\u62bd\u8c61\u7c7b&#xff1a;\u4fa7\u91cd\u4ee3\u7801\u590d\u7528&#xff0c;\u5b9a\u4e49\u7c7b\u7684\u5171\u540c\u5c5e\u6027\u548c\u90e8\u5206\u5b9e\u73b0&#xff0c;\u4f53\u73b0\u201cis-a\u201d\u5173\u7cfb&#xff08;\u5982\u201c\u72d7\u662f\u52a8\u7269\u201d&#xff09;\u3002<br \/>\n\u00a0<br \/>\n\u63a5\u53e3&#xff1a;\u4fa7\u91cd\u884c\u4e3a\u89c4\u8303&#xff0c;\u5b9a\u4e49\u7c7b\u5e94\u5b9e\u73b0\u7684\u65b9\u6cd5&#xff0c;\u4f53\u73b0\u201chas-a\u201d\u5173\u7cfb&#xff08;\u5982\u201c\u72d7\u4f1a\u8dd1\u201d&#xff09;<\/p>\n<h3>2.1 \u591a\u63a5\u53e3\u5b9e\u73b0<\/h3>\n<p>Java\u4e2d\u7c7b\u548c\u7c7b\u867d\u7136\u53ea\u80fd\u662f\u5355\u7ee7\u627f\u3002\u4f46\u662f\u5bf9\u4e8e\u63a5\u53e3&#xff0c;\u6211\u4eec\u662f\u53ef\u4ee5\u5b9e\u73b0\u591a\u7ee7\u627f\u7684&#xff1a;\u5373\u4e00\u4e2a\u7c7b\u53ef\u4ee5\u5b9e\u73b0\u591a\u4e2a\u63a5\u53e3\u3002\u81f3\u4e8e\u4e3a\u4ec0\u4e48\u6211\u4eec\u540e\u9762\u4f1a\u8bb2\u5230\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"373\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250814040514-689d607ada5f6.jpg\" width=\"565\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"419\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250814040515-689d607b88b88.jpg\" width=\"382\" \/><\/p>\n<p>public Cat(String name) {<br \/>\nsuper(name);<\/p>\n<p>}\u00a0 \u00a0\/\/\u8fd9\u6bb5\u4ee3\u7801\u662f\u521b\u5efa\u5b50\u7c7b\u65f6\u5bf9\u7236\u7c7b\u91cc\u7684\u8fdb\u884c\u521d\u59cb\u5316<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"493\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250814040515-689d607bd8413.jpg\" width=\"357\" \/><\/p>\n<p>\u8fd9\u6bb5\u4ee3\u7801class Frog extends Animal implements lRunning, lSwimming \u6709\u51e0\u4e2a\u6ce8\u610f\u4e8b\u9879&#xff1a;<\/p>\n<p>1.\u63a5\u53e3\u7684\u5b9e\u73b0\u5fc5\u987b\u653e\u5728\u7ee7\u627f\u7236\u7c7b\u7684\u540e\u9762&#xff0c;\u5426\u5219\u7f16\u8bd1\u5668\u4f1a\u62a5\u9519\u3002<\/p>\n<p>2.\u53ef\u4ee5\u540c\u65f6\u5b9e\u73b0\u591a\u4e2a\u63a5\u53e3&#xff0c;\u53ea\u9700\u5728\u63a5\u53e3\u4e0e\u63a5\u53e3\u4e4b\u95f4\u52a0\u4e0a\u9017\u53f7\u5373\u53ef\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"529\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250814040516-689d607c66a03.png\" width=\"1794\" \/><\/p>\n<p>\u8fd9\u5c31\u662f\u80fd\u5b9e\u73b0\u591a\u63a5\u53e3\u7684\u539f\u56e0&#xff1a;\u7ee7\u627f\u7684\u8868\u8fbe\u542b\u4e49\u662f is-a \u7684\u8bed\u4e49&#xff0c;\u800c\u63a5\u53e3\u8868\u8fbe\u7684\u542b\u4e49\u662f<span style=\"color:#fe2c24\">\u5177\u6709 has-a \u7684\u7279\u6027<\/span><span style=\"color:#0d0016\">\u3002\u53ea\u5173\u6ce8\u67d0\u4e2a\u7c7b\u6216\u67d0\u4e2a\u5bf9\u8c61\u80fd\u4e0d\u80fd\u591f\u5b9e\u73b0\u8fd9\u4e2a\u7279\u6027&#xff0c;\u9650\u5236\u6761\u4ef6\u53d8\u5c11\u4e86\u3002<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"188\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250814040517-689d607d1a66f.png\" width=\"387\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"319\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250814040517-689d607d6344b.png\" width=\"384\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"266\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250814040517-689d607ddc348.png\" width=\"1980\" \/><\/p>\n<p>\u63a5\u53e3\u53ef\u4ee5\u7ee7\u627f\u4e00\u4e2a\u63a5\u53e3&#xff0c;\u8fbe\u5230\u590d\u7528\u7684\u6548\u679c&#xff0c;\u9700\u8981\u4f7f\u7528 extends 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Object\u662fJava\u9ed8\u8ba4\u63d0\u4f9b\u7684\u4e00\u4e2a\u7c7b\u3002Java\u91cc\u9762\u9664\u4e86Object\u7c7b&#xff0c;\u6240\u6709\u7684\u7c7b\u90fd\u662f\u5b58\u5728\u7ee7\u627f\u5173\u7cfb\u7684\u3002\u4e14\u9ed8\u8ba4\u4f1a\u7ee7\u627fObject\u7c7b\u3002\u5373\u6240\u6709\u7c7b\u7684\u5bf9\u8c61\u90fd\u53ef\u4ee5\u4f7f\u7528Obiect\u7684\u5f15\u7528\u8fdb\u884c\u63a5\u6536\u3002<\/p>\n<p>\u00a0 \u00a0 \u00a0 \u00a0Object \u7c7b\u662f Java \u4e2d\u6240\u6709\u7c7b\u7684\u6839\u7c7b&#xff0c;\u4f4d\u4e8e\u00a0java.lang\u00a0\u5305\u4e2d&#xff0c;\u5b83\u76f8\u5f53\u4e8e\u662f\u4f60\u6240\u7f16\u8bd1\u7684\u7236\u7c7b\u7684\u7236\u7c7b&#xff0c;\u4e14\u5728\u5b83\u4e4b\u4e0a\u4e0d\u80fd\u518d\u6709\u7236\u7c7b&#xff0c;\u5b83\u5373\u662f\u6700\u9ad8\u7684\u3002\u4ee5\u4e0b\u7b80\u5355\u4ecb\u7ecd Object \u7684\u8fd9\u4e09\u79cd\u65b9\u6cd5&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"376\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250814040518-689d607ee83c0.png\" width=\"347\" \/><\/p>\n<p>&#xff08;1&#xff09;equals&#xff1a;\u5177\u4f53\u793a\u4f8b\u8bed\u6cd5&#xff08;tmp.name.equals(this.name)&#xff09;\u5982\u4e0b\u56fe&#xff1a;<\/p>\n<p>\u8fd9\u91cc\u6ce8\u610f Dog tmp &#061; (Dog)obj&#xff1b;\u662f\u9700\u8981\u5c06 Object \u7684obj \u5f3a\u8f6c\u6210Dog \u7c7b\u578b\u7684\u3002\u7136\u540e\u4e0d\u80fd\u76f4\u63a5\u7528\u4e00\u4e2a\u5bf9\u8c61\u6765 equals \u53e6\u4e00\u4e2a\u5bf9\u8c61&#xff0c;\u4e0d\u7136\u7684\u8bdd\u7f16\u8bd1\u5668\u53ea\u662f\u53d6\u8fd9\u4e24\u4e2a\u5bf9\u8c61\u7684\u5730\u5740\u6765\u8fdb\u884c\u6bd4\u8f83&#xff0c;\u80af\u5b9a\u8f93\u51fa\u7684\u5c31\u4f1a\u662f false&#xff0c;\u6240\u4ee5\u6211\u4eec\u8981\u628a\u5bf9\u8c61\u91cc\u9762\u7684\u5c5e\u6027\u9010\u4e2a\u8fdb\u884c\u6bd4\u8f83&#xff0c;\u8fd9\u6837\u624d\u662f\u6b63\u786e\u7684\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"397\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250814040519-689d607f5458f.png\" width=\"2067\" \/><\/p>\n<p>&#xff08;2&#xff09;toString&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"394\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250814040520-689d6080d5774.png\" width=\"1660\" \/><\/p>\n<p>&#xff08;3&#xff09;hashcode<\/p>\n<p>\u73b0\u5728\u8fd8\u662f\u7528&#xff08;1&#xff09;\u56fe\u4e2d\u7684\u4ee3\u7801&#xff0c;\u4f46\u662f\u52a0\u4e0a\u4e0b\u9762\u4e24\u4e32 hashcode \u4ee3\u7801&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"109\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250814040522-689d60822c230.png\" width=\"726\" \/><\/p>\n<p>\u5f97\u51fa\u7684\u7ed3\u679c\u662f&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"124\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250814040522-689d608264c1a.png\" width=\"241\" \/><\/p>\n<p>\u6240\u4ee5&#xff0c;hashcode \u9ed8\u8ba4\u8f93\u51fa\u7684\u662f\u4e00\u4e2a\u6574\u578b\u503c\u3002<\/p>\n<\/p>\n<p>\u672c\u7bc7\u6587\u7ae0\u5230\u6b64\u7ed3\u675f&#xff0c;\u4f46\u662f\u5176\u5b9e\u8fd8\u6ca1\u5b8c&#xff0c;\u4e0b\u7bc7\u6587\u7ae0\u8981\u8bb2\u5185\u90e8\u5757&#xff0c;\u5982\u4e0b\u56fe&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"462\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250814040522-689d6082ad2b2.png\" width=\"1897\" \/><\/p>\n<\/p>\n<p>\u672c\u7bc7\u6587\u7ae0\u7684\u622a\u56fe\u548c\u8bfe\u4ef6\u5747\u6458\u81ea\u00a0 \u6bd4\u7279\u79d1\u6280 \u3002\u5e0c\u671b\u80fd\u5bf9\u4f60\u6709\u5e2e\u52a9\u3002<\/p>\n<\/p>\n<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb104\u6b21\uff0c\u70b9\u8d5e3\u6b21\uff0c\u6536\u85cf4\u6b21\u3002\u6765\u8868\u793a\u7684\uff0c\u8fd9\u79cd\u88ab abstract 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