{"id":65600,"date":"2025-05-03T09:03:58","date_gmt":"2025-05-03T01:03:58","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65600\/"},"modified":"2025-05-03T09:03:58","modified_gmt":"2025-05-03T01:03:58","slug":"java%e6%95%b0%e7%bb%84%e7%9a%84%e5%9c%b0%e5%9d%80%e5%80%bc%e6%80%8e%e4%b9%88%e5%8f%98%e6%88%90%e6%95%b0%e7%bb%84-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65600\/","title":{"rendered":"java\u6570\u7ec4\u7684\u5730\u5740\u503c\u600e\u4e48\u53d8\u6210\u6570\u7ec4"},"content":{"rendered":"<blockquote><p>\n  java\u4e2d\u5c06\u6570\u7ec4\u5730\u5740\u503c\u8f6c\u6362\u4e3a\u6570\u7ec4\u9700\u8981\u4ee5\u4e0b\u6b65\u9aa4\uff1a\u83b7\u53d6\u6570\u7ec4\u5730\u5740\u503c\uff1a\u4f7f\u7528 system.identityhashcode(array)\u3002\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5176\u5927\u5c0f\u4e0e\u539f\u59cb\u6570\u7ec4\u76f8\u540c\u3002\u5c06\u539f\u59cb\u6570\u7ec4\u7684\u503c\u590d\u5236\u5230\u65b0\u6570\u7ec4\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111305001566706.jpg\" class=\"aligncenter\" title=\"java\u6570\u7ec4\u7684\u5730\u5740\u503c\u600e\u4e48\u53d8\u6210\u6570\u7ec4\u63d2\u56fe\" alt=\"java\u6570\u7ec4\u7684\u5730\u5740\u503c\u600e\u4e48\u53d8\u6210\u6570\u7ec4\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5c06 Java \u6570\u7ec4\u7684\u5730\u5740\u503c\u8f6c\u6362\u4e3a\u6570\u7ec4<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u6570\u7ec4\u662f\u5b58\u653e\u57fa\u672c\u7c7b\u578b\u6216\u5bf9\u8c61\u7684\u5f15\u7528\u6570\u7ec4\u3002\u6570\u7ec4\u7684\u5730\u5740\u503c\u662f\u4e00\u4e2a\u6307\u5411\u6570\u7ec4\u7b2c\u4e00\u4e2a\u5143\u7d20\u7684\u5185\u5b58\u5730\u5740\u3002\u8981\u5c06\u6570\u7ec4\u7684\u5730\u5740\u503c\u8f6c\u6362\u4e3a\u6570\u7ec4\uff0c\u9700\u8981\u4f7f\u7528\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n<ol>\n<li>\n<p><strong>\u83b7\u53d6\u6570\u7ec4\u7684\u5730\u5740\u503c\uff1a<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528 System.identityHashCode(array)\uff0c\u5176\u4e2d array \u662f\u8981\u8f6c\u6362\u7684\u6570\u7ec4\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p><strong>\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5176\u5927\u5c0f\u4e0e\u539f\u59cb\u6570\u7ec4\u76f8\u540c\uff1a<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<ul>\n<li>\u4f7f\u7528 new [\u539f\u59cb\u6570\u7ec4\u7c7b\u578b][\u539f\u59cb\u6570\u7ec4\u5927\u5c0f] \u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p><strong>\u5c06\u539f\u59cb\u6570\u7ec4\u7684\u503c\u590d\u5236\u5230\u65b0\u6570\u7ec4\uff1a<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528 System.arraycopy(\u539f\u59cb\u6570\u7ec4, 0, \u65b0\u6570\u7ec4, 0, \u65b0\u6570\u7ec4\u5927\u5c0f) \u5c06\u539f\u59cb\u6570\u7ec4\u7684\u503c\u590d\u5236\u5230\u65b0\u6570\u7ec4\u4e2d\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff0c\u6f14\u793a\u5982\u4f55\u5c06 int \u6570\u7ec4\u7684\u5730\u5740\u503c\u8f6c\u6362\u4e3a\u6570\u7ec4\uff1a<\/p>\n<pre>int[] originalArray = {1, 2, 3};\nint address = System.identityHashCode(originalArray);\n\n\/\/ \u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5927\u5c0f\u4e0e\u539f\u59cb\u6570\u7ec4\u76f8\u540c\nint[] newArray = new int[originalArray.length];\n\n\/\/ \u5c06\u539f\u59cb\u6570\u7ec4\u7684\u503c\u590d\u5236\u5230\u65b0\u6570\u7ec4\nSystem.arraycopy(originalArray, 0, newArray, 0, newArray.length);\n\n\/\/ \u786e\u4fdd\u65b0\u6570\u7ec4\u4e0e\u539f\u59cb\u6570\u7ec4\u76f8\u540c\nfor (int i = 0; i &lt; originalArray.length; i++) {\n    assert newArray[i] == originalArray[i];\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u7684\u5730\u5740\u503c\u600e\u4e48\u53d8\u6210\u6570\u7ec4\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>java\u4e2d\u5c06\u6570\u7ec4\u5730\u5740\u503c\u8f6c\u6362\u4e3a\u6570\u7ec4\u9700\u8981\u4ee5\u4e0b\u6b65\u9aa4\uff1a\u83b7\u53d6\u6570\u7ec4\u5730\u5740\u503c\uff1a\u4f7f\u7528 system.identityhashcode(array)\u3002\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5176\u5927\u5c0f\u4e0e\u539f\u59cb\u6570\u7ec4\u76f8\u540c\u3002\u5c06\u539f\u59cb\u6570\u7ec4\u7684\u503c\u590d\u5236\u5230\u65b0\u6570\u7ec4\u3002 \u5982\u4f55\u5c06 Java \u6570\u7ec4\u7684\u5730\u5740\u503c\u8f6c\u6362\u4e3a\u6570\u7ec4 \u5728 Java \u4e2d\uff0c\u6570\u7ec4\u662f\u5b58\u653e\u57fa\u672c\u7c7b\u578b\u6216\u5bf9\u8c61\u7684\u5f15\u7528\u6570\u7ec4\u3002\u6570\u7ec4\u7684\u5730\u5740\u503c\u662f\u4e00\u4e2a\u6307\u5411\u6570\u7ec4\u7b2c\u4e00\u4e2a\u5143\u7d20\u7684\u5185\u5b58\u5730\u5740\u3002\u8981\u5c06\u6570\u7ec4\u7684\u5730\u5740\u503c\u8f6c\u6362\u4e3a\u6570\u7ec4\uff0c\u9700\u8981\u4f7f\u7528\u4ee5\u4e0b\u6b65\u9aa4\uff1a \u83b7\u53d6\u6570\u7ec4\u7684\u5730\u5740\u503c\uff1a \u4f7f\u7528 System.identityHashCode(array)\uff0c\u5176\u4e2d array \u662f\u8981\u8f6c\u6362\u7684\u6570\u7ec4\u3002 \u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5176\u5927\u5c0f\u4e0e\u539f\u59cb\u6570\u7ec4\u76f8\u540c\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u4f7f\u7528 new [\u539f\u59cb\u6570\u7ec4\u7c7b\u578b][\u539f\u59cb\u6570\u7ec4\u5927\u5c0f] \u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\u3002 \u5c06\u539f\u59cb\u6570\u7ec4\u7684\u503c\u590d\u5236\u5230\u65b0\u6570\u7ec4\uff1a \u4f7f\u7528 System.arraycopy(\u539f\u59cb\u6570\u7ec4, 0, \u65b0\u6570\u7ec4, 0, \u65b0\u6570\u7ec4\u5927\u5c0f) \u5c06\u539f\u59cb\u6570\u7ec4\u7684\u503c\u590d\u5236\u5230\u65b0\u6570\u7ec4\u4e2d\u3002 \u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff0c\u6f14\u793a\u5982\u4f55\u5c06 int \u6570\u7ec4\u7684\u5730\u5740\u503c\u8f6c\u6362\u4e3a\u6570\u7ec4\uff1a int[] originalArray = {1, 2, 3}; int address = System.identityHashCode(originalArray); \/\/ \u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5927\u5c0f\u4e0e\u539f\u59cb\u6570\u7ec4\u76f8\u540c int[] newArray = new int[originalArray.length]; \/\/ \u5c06\u539f\u59cb\u6570\u7ec4\u7684\u503c\u590d\u5236\u5230\u65b0\u6570\u7ec4 System.arraycopy(originalArray, 0, newArray, 0, newArray.length); \/\/ [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-65600","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65600","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=65600"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65600\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65600"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65600"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65600"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}