{"id":31398,"date":"2023-09-19T15:20:00","date_gmt":"2024-01-12T04:21:51","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90java%e3%80%91equals%e8%bf%99%e6%98%af%e4%bb%80%e4%b9%88%e4%b8%9c%e8%a5%bf\/"},"modified":"2025-08-12T23:50:16","modified_gmt":"2025-08-12T15:50:16","slug":"%e3%80%90java%e3%80%91equals%e8%bf%99%e6%98%af%e4%bb%80%e4%b9%88%e4%b8%9c%e8%a5%bf","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90java%e3%80%91equals%e8%bf%99%e6%98%af%e4%bb%80%e4%b9%88%e4%b8%9c%e8%a5%bf\/","title":{"rendered":"\u3010Java\u3011equals()\u8fd9\u662f\u4ec0\u4e48\u4e1c\u897f?"},"content":{"rendered":"<h2>\u9996\u5148<\/h2>\n<p>\u5728\u5b66\u4e60JavaSilver\u8bfe\u7a0b\u671f\u95f4<\/p>\n<p>\u55ef\u55ef\uff0cequals()\u662f\u7528\u6765\u5224\u65ad\u4e24\u4e2a\u5b9e\u4f8b\u7684\u76f8\u7b49\u6027\u7684\u4e1c\u897f\u5462\u3002<\/p>\n<p>\u300c\u55ef\uff1f\u4f46\u662f\u8fd9\u8fb9\u5199\u7740\u8981\u68c0\u67e5\u7b49\u503c\u6027\u5462\u2026\u300d<\/p>\n<p>\u300cString\u7c7b\u578b\u7684equals()\u65b9\u6cd5\u7ee7\u627f\u4e86\u7236\u7c7bObject\u7c7b\u578b\u7684equals()\u65b9\u6cd5\uff0c\u6240\u4ee5\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u4f1a\u4fdd\u6301\u4e0d\u53d8&#8230;&#8230;\u96be\u9053\u4e0d\u662f\u5417\uff1f\u4e3a\u4ec0\u4e48\u4f1a\u8fd9\u6837\uff1f\uff1f\u300d<\/p>\n<p>\u55ef\uff0c\u56e0\u4e3a\u7406\u89e3\u8fd9\u4e2a\u6982\u5ff5\u786e\u5b9e\u6709\u4e00\u5b9a\u56f0\u96be\uff0c\u6240\u4ee5\u6211\u628a\u5b83\u4f5c\u4e3a\u5907\u5fd8\u5f55\u6574\u7406\u4e00\u4e0b\u3002<\/p>\n<h2>\u540c\u4e00\u6027\u610f\u5473\u7740\u7269\u548c\u7b49\u540c\u6027\u3002<\/h2>\n<p>\u4f5c\u4e3a\u5148\u51b3\u6761\u4ef6\u7684\u77e5\u8bc6&#8230; (As prerequisite knowledge&#8230;)<\/p>\n<h3>&#8211; \u4e00\u81f4\u6027<\/h3>\n<p>\u591a\u4e2a\u53d8\u91cf\u662f\u5426\u5f15\u7528\u4e86\u540c\u4e00\u5b9e\u4f8b<\/p>\n<p>\u5728\u4e0b\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u5c06\u5bf9\u8c61\u7c7b\u578b\u53d8\u91cfa\u8d4b\u503c\u4e3a\u5b9e\u4f8ba\u7684\u5f15\u7528\uff0c<br \/>\n\u5c06\u5bf9\u8c61\u7c7b\u578b\u53d8\u91cfb\u8d4b\u503c\u4e3a\u53d8\u91cfa\u7684\u5185\u5bb9\uff08\u5373\u5b9e\u4f8ba\u7684\u5f15\u7528\uff09\uff0c<br \/>\n\u5c3d\u7ba1\u53d8\u91cf\u4e0d\u540c\u4f46\u5f15\u7528\u76f8\u540c\uff0c\u56e0\u6b64\u53ef\u4ee5\u8bf4\u662f\u76f8\u7b49\u7684\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nc\">Object<\/span> <span class=\"n\">a<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">Object<\/span><span class=\"o\">();<\/span>\r\n<span class=\"nc\">Object<\/span> <span class=\"n\">b<\/span> <span class=\"o\">=<\/span> <span class=\"n\">a<\/span><span class=\"o\">;<\/span>\r\n<span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"n\">a<\/span> <span class=\"o\">==<\/span> <span class=\"n\">b<\/span><span class=\"o\">);<\/span> <span class=\"c1\">\/\/result:true<\/span>\r\n<\/code><\/pre>\n<h3>\u30fb\u7b49\u4ef7\u6027<\/h3>\n<p>\u5373\u4f7f\u662f\u4e0d\u540c\u7684\u5b9e\u4f8b\uff0c\u5176\u5185\u5bb9\u662f\u5426\u76f8\u7b49<\/p>\n<p>\u4ee5\u4e0b\u7684\u4f8b\u5b50\u4e2d\uff0cString\u7c7b\u578b\u7684a\u548cb\u662f\u4e0d\u540c\u7684\u5b9e\u4f8b\uff0c\u4f46\u662f\u5b83\u4eec\u7684\u503c\u662f\u76f8\u540c\u7684\uff0c\u56e0\u6b64\u53ef\u4ee5\u8bf4\u5b83\u4eec\u662f\u7b49\u503c\u7684\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nc\">String<\/span> <span class=\"n\">a<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"Hello\"<\/span><span class=\"o\">;<\/span>\r\n<span class=\"nc\">String<\/span> <span class=\"n\">b<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"Hello\"<\/span><span class=\"o\">;<\/span>\r\n<span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"n\">a<\/span> <span class=\"o\">==<\/span> <span class=\"n\">b<\/span><span class=\"o\">);<\/span> <span class=\"c1\">\/\/result:true<\/span>\r\n<\/code><\/pre>\n<h2>\u76f8\u7b49()<\/h2>\n<p>\u5728Object\u7c7b\u4e2d\u5b9a\u4e49\u7684\u65b9\u6cd5\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u7528\u4e8e\u68c0\u67e5\u540c\u4e00\u6027\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">public<\/span> <span class=\"kt\">boolean<\/span> <span class=\"nf\">equals<\/span><span class=\"o\">(<\/span><span class=\"nc\">Object<\/span> <span class=\"n\">obj<\/span><span class=\"o\">){<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"o\">(<\/span><span class=\"k\">this<\/span> <span class=\"o\">==<\/span> <span class=\"n\">obj<\/span><span class=\"o\">)<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u7136\u800c\uff0c\u5728\u8fd9\u91cc\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0cequals() \u539f\u672c\u662f\u7528\u6765\u5224\u65ad\u76f8\u7b49\u6027\u7684\uff0c\u4e00\u822c\u6765\u8bf4\uff0c\u5e94\u8be5\u4f7f\u7528\u91cd\u5199\u6765\u4e3a\u6bcf\u4e2a\u7c7b\u91cd\u65b0\u5b9a\u4e49\u3002<\/p>\n<h2>JavaSilver\u9047\u5230\u7684\u95ee\u9898<\/h2>\n<p>\u4e0b\u9762\u5217\u51fa\u7684\u95ee\u9898\u975e\u5e38\u6df7\u4e71\u3002\uff08\u5f15\u81ea\u300aJava SE8 Silver\u300b\u4e2d\u7684\u9ed1\u4e66\uff09<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">\/\/\u7b2c3\u7ae0 \u554f12 \u5b9f\u884c\u7d50\u679c\u306f\u3069\u3046\u306a\u308b\u304b<\/span>\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">Main<\/span><span class=\"o\">{<\/span>\r\n    <span class=\"kd\">public<\/span> <span class=\"kd\">static<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">main<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span><span class=\"o\">[]<\/span> <span class=\"n\">args<\/span><span class=\"o\">){<\/span>\r\n        <span class=\"nc\">String<\/span> <span class=\"n\">a<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"sample\"<\/span><span class=\"o\">;<\/span>\r\n        <span class=\"nc\">String<\/span> <span class=\"n\">b<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"sample\"<\/span><span class=\"o\">;<\/span>\r\n        <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">print<\/span><span class=\"o\">(<\/span><span class=\"n\">a<\/span> <span class=\"o\">==<\/span> <span class=\"n\">b<\/span><span class=\"o\">);<\/span>\r\n        <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">print<\/span><span class=\"o\">(<\/span><span class=\"s\">\",\"<\/span><span class=\"o\">);<\/span>\r\n        <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">print<\/span><span class=\"o\">(<\/span><span class=\"n\">a<\/span><span class=\"o\">.<\/span><span class=\"na\">equals<\/span><span class=\"o\">(<\/span><span class=\"n\">b<\/span><span class=\"o\">));<\/span><span class=\"c1\">\/\/result\uff1atrue,true<\/span>\r\n        <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>System.out.print(a.equals(b));\u7684\u4ee3\u7801\u5728\u201c\u5f00\u59cb\u201d\u90e8\u5206\u63d0\u5230\u4e86\u3002<\/p>\n<p>\u300cString\u7c7b\u578b\u7684equals()\u65b9\u6cd5\u7ee7\u627f\u4e86\u7236\u7c7bObject\u7c7b\u578b\u7684equals()\u65b9\u6cd5\uff0c\u6240\u4ee5\u9ed8\u8ba4\u662f\u4e0d\u53d8\u7684&#8230;&#8230;\u96be\u9053\u4e0d\u662f\u5417\uff1f\u4e3a\u4ec0\u4e48\uff1f\u300d<\/p>\n<p>\u4f1a\u5bfc\u81f4\u8fde\u63a5\u3002<\/p>\n<p>\u90a3\u65f6\u6211\u9519\u8bef\u7684\u60f3\u6cd5\u662f\uff0c&#8221;\u55ef\uff0c\u8c03\u7528equals()\u65b9\u6cd5\u6765\u68c0\u67e5\u5b9e\u4f8ba\u548cb\u7684\u76f8\u7b49\u6027\u3002<br \/>\n\u54e6\uff0c\u4f46\u662fString\u7c7b\u578b\u7684equals()\u65b9\u6cd5\u7ee7\u627f\u4e86Object\u7c7b\u578b\u7684equals()\u65b9\u6cd5\uff0c\u6240\u4ee5\u662f\u7528\u6765\u5224\u65ad\u540c\u4e00\u6027\u7684\u3002<br \/>\n\u90a3\u4e48a\u548cb\u662f\u4e0d\u540c\u7684\u5b9e\u4f8b\uff0c\u6240\u4ee5\u8fd9\u5e94\u8be5\u662ffalse&#8221;\u3002<\/p>\n<p>\u8003\u8651\u4e4b\u540e\uff0c\u7b54\u6848\u662f\u771f\u7684\uff0c\u6240\u4ee5\u6211\u5f88\u60ca\u8bb6\u5730\u8bf4\uff1a\u201c\u54c7\uff01\u201d\uff08\u8bcd\u6c47\u91cf\uff09<\/p>\n<p>\u55ef\uff0c\u5176\u5b9e\u4e00\u5f00\u59cb\u5c31\u5728\u4e2d\u95f4\u90a3\u884c\u901a\u8fc7\u201c==\u201d\u8fdb\u884c\u4e86\u4e00\u6b21\u8eab\u4efd\u5224\u5b9a\uff0c\u5982\u679c\u90a3\u91cc\u662ftrue\u7684\u8bdd\uff0c\u8fd9\u6b21\u7684equals()\u4e5f\u5f88\u53ef\u80fd\u662ftrue\u7684\u561b&#8230;<\/p>\n<h3>1. \u5373\u4f7f\u662fString\u7c7b\u578b\uff0cequals()\u65b9\u6cd5\u4e5f\u5df2\u7ecf\u88ab\u91cd\u5199\u8fc7\u4e86\u3002<\/h3>\n<blockquote><p>&#8220;String\u7c7b\u578b\u7684equals()\u65b9\u6cd5\u7ee7\u627f\u4e86Object\u7c7b\u578b\u7684equals()\u65b9\u6cd5\uff0c\u6240\u4ee5\u7528\u4e8e\u5224\u65ad\u540c\u4e00\u6027&#8221;<\/p><\/blockquote>\n<p>\u5979\u63d0\u5230\u7684\u8bdd\u53ea\u6709\u4e00\u534a\u662f\u9519\u8bef\u7684\u3002<\/p>\n<p>Object\u7c7b\u578b\u7684equals()\u65b9\u6cd5\u88ab\u5b9a\u4e49\u4e3a\u5224\u65ad\u540c\u4e00\u6027\uff0c\u4f46\u662fString\u7c7b\u578b\u7684equals()\u65b9\u6cd5\u88ab\u91cd\u5199\uff0c\u7528\u4e8e\u68c0\u67e5\u4e24\u4e2a\u5b9e\u4f8b\u662f\u5426\u5177\u6709\u7b49\u503c\u6027\u5173\u7cfb\u3002\uff08\u4ee3\u7801\u88ab\u7701\u7565\uff09<\/p>\n<h2>\u6700\u540e<\/h2>\n<p>\u6211\u82b1\u4e86\u5927\u7ea61\u30012\u4e2a\u5c0f\u65f6\u5b66\u4e60\uff0c\u4f46\u8bf4\u5b9e\u8bdd\uff0c\u6211\u4ecd\u7136\u6709\u5f88\u591a\u5730\u65b9\u65e0\u6cd5\u7406\u89e3\u3002<br \/>\n\u6211\u4f1a\u7ee7\u7eed\u66f4\u65b0\u7684\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9996\u5148 \u5728\u5b66\u4e60JavaSilver\u8bfe\u7a0b\u671f\u95f4 \u55ef\u55ef\uff0cequals()\u662f\u7528\u6765\u5224\u65ad\u4e24\u4e2a\u5b9e\u4f8b\u7684\u76f8\u7b49\u6027\u7684\u4e1c\u897f\u5462\u3002 \u300c\u55ef\uff1f\u4f46 [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-31398","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u3010Java\u3011equals()\u8fd9\u662f\u4ec0\u4e48\u4e1c\u897f? - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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content=\"2024-01-12T04:21:51+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-12T15:50:16+00:00\" \/>\n<meta name=\"author\" content=\"\u97f5, \u79d1\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u97f5, \u79d1\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90java%e3%80%91equals%e8%bf%99%e6%98%af%e4%bb%80%e4%b9%88%e4%b8%9c%e8%a5%bf\/\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90java%e3%80%91equals%e8%bf%99%e6%98%af%e4%bb%80%e4%b9%88%e4%b8%9c%e8%a5%bf\/\",\"name\":\"\u3010Java\u3011equals()\u8fd9\u662f\u4ec0\u4e48\u4e1c\u897f? - 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