{"id":546,"date":"2022-05-02T09:33:25","date_gmt":"2022-05-02T01:33:25","guid":{"rendered":"https:\/\/blog.lijiajia.top\/?p=546"},"modified":"2026-06-19T20:52:21","modified_gmt":"2026-06-19T12:52:21","slug":"%e4%b8%a4%e4%b8%aa%e5%af%b9%e8%b1%a1hashcode%e7%9b%b8%e5%90%8c%ef%bc%8c%e5%ae%83%e4%bb%acequals%e6%98%af%e5%90%a6%e7%9b%b8%e5%90%8c","status":"publish","type":"post","link":"https:\/\/blog.ttwow.top\/?p=546","title":{"rendered":"hashcode\uff08\uff09\u548cequals\uff08\uff09\u7684\u4f5c\u7528\u3001\u533a\u522b\u3001\u8054\u7cfb"},"content":{"rendered":"

https:\/\/www.jianshu.com\/p\/443e678291eb<\/a><\/p>\n

\u9996\u5148\uff0c\u6211\u4eec\u8bb2\u8bb2\u4e00\u822c\u5e38\u7528\u7684\u201c==\u201d\u548c\u201cequals()\u201d;<\/h3>\n

\u201c==\u201d\u8fd0\u7b97\u7b26\u7528\u6765\u6bd4\u8f83\u4e24\u4e2a\u53d8\u91cf\u7684\u503c\u662f\u5426\u76f8\u7b49\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u8be5\u8fd0\u7b97\u7b26\u7528\u4e8e\u6bd4\u8f83\u53d8\u91cf\u5bf9\u5e94\u7684\u5185\u5b58\u4e2d\u6240\u5b58\u50a8\u7684\u6570\u503c\u662f\u5426\u76f8\u540c\uff0c\u8981\u6bd4\u8f83\u4e24\u4e2a\u57fa\u672c\u7c7b\u578b\u7684\u6570\u636e\u6216\u4e24\u4e2a\u5f15\u7528\u53d8\u91cf\u662f\u5426\u76f8\u7b49\uff0c\u53ea\u80fd\u4f7f\u7528\u201c==\u201d\u8fd0\u7b97\u7b26\u3002<\/p>\n

\u5177\u4f53\u800c\u8a00\uff0c\u5982\u679c\u4e24\u4e2a\u53d8\u91cf\u662f\u57fa\u672c\u6570\u636e\u7c7b\u578b\uff0c\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u201c==\u201d\u8fd0\u7b97\u7b26\u6765\u6bd4\u8f83\u5176\u5bf9\u5e94\u7684\u503c\u662f\u5426\u76f8\u7b49\u3002\u5982\u679c\u4e00\u4e2a\u53d8\u91cf\u6307\u5411\u7684\u6570\u636e\u662f\u5bf9\u8c61\uff08\u5f15\u7528\u7c7b\u578b\uff09\uff0c\u90a3\u4e48\uff0c\u6b64\u65f6\u6d89\u53ca\u4e86\u4e24\u5757\u5185\u5b58\uff0c\u5bf9\u8c61\u672c\u8eab\u5360\u7528\u4e86\u4e00\u5757\u5185\u5b58\uff08\u5806\u5185\u5b58\uff09\uff0c\u53d8\u91cf\u4e5f\u5360\u7528\u4e00\u5757\u5185\u5b58\uff0c\u4f8b\u5982\uff0c\u5bf9\u4e8e\u8d4b\u503c\u8bed\u53e5\uff1a<\/p>\n

String s = new String();\nString t = new String();<\/code><\/pre>\n
\u53d8\u91cfs\u5360\u7528\u4e00\u5757\u5b58\u50a8\u7a7a\u95f4\uff0c\u800cnew String()\u5219\u5b58\u50a8\u5728\u53e6\u5916\u4e00\u5757\u5b58\u50a8\u7a7a\u95f4\u91cc\uff0c\u6b64\u65f6\uff0c\u53d8\u91cfs\u6240\u5bf9\u5e94\u5185\u5b58\u4e2d\u5b58\u50a8\u7684\u6570\u503c\u5c31\u662f\u5bf9\u8c61\u5360\u7528\u7684\u90a3\u5757\u5185\u5b58\u7684\u9996\u5730\u5740\u3002\u5bf9\u4e8e\u6307\u5411\u5bf9\u8c61\u7c7b\u578b\u7684\u53d8\u91cf\uff0c\u5982\u679c\u8981\u6bd4\u8f83\u4e24\u4e2a\u53d8\u91cf\u662f\u5426\u6307\u5411\u540c\u4e00\u4e2a\u5bf9\u8c61\uff0c\u5373\u8981\u770b\u8fd9\u4e24\u4e2a\u53d8\u91cf\u6240\u5bf9\u5e94\u7684\u5185\u5b58\u4e2d\u7684\u6570\u503c\u662f\u5426\u76f8\u7b49\uff08\u8fd9\u4e24\u4e2a\u5bf9\u8c61\u662f\u5426\u6307\u5411\u540c\u4e00\u5757\u5b58\u50a8\u7a7a\u95f4\uff09\uff0c\u8fd9\u65f6\u5019\u5c31\u53ef\u4ee5\u7528\u201c==\u201d\u8fd0\u7b97\u7b26\u8fdb\u884c\u6bd4\u8f83\u3002\u4f46\u662f\uff0c\u5982\u679c\u8981\u6bd4\u8f83\u8fd9\u4e24\u4e2a\u5bf9\u8c61\u7684\u5185\u5bb9\u662f\u5426\u76f8\u7b49\uff0c\u90a3\u4e48\u7528\u201c==\u201d\u8fd0\u7b97\u7b26\u5c31\u65e0\u6cd5\u5b9e\u73b0\u4e86\u3002<\/p>\n
equals\u662fObject\u7c7b\u63d0\u4f9b\u7684\u65b9\u6cd5\u4e4b\u4e00\u3002\u6bcf\u4e00\u4e2aJava\u7c7b\u90fd\u96c6\u6210\u81eaObject\u7c7b\uff0c\u6240\u4ee5\u6bcf\u4e00\u4e2a\u5bf9\u8c61\u90fd\u5177\u6709equals\u8fd9\u4e2a\u65b9\u6cd5\u3002Object\u7c7b\u4e2d\u5b9a\u4e49\u7684equals(Object)\u65b9\u6cd5\u7684\u60c5\u51b5\u4e0b\uff0cequals(Object)\u4e0e\u201c==\u201d\u8fd0\u7b97\u7b26\u4e00\u6837\uff0c\u6bd4\u8f83\u7684\u662f\u5f15\u7528\u3002<\/p>\n
\u76f8\u6bd4\u201c==\u201d\u8fd0\u7b97\u7b26\uff0cequals(Object)\u65b9\u6cd5\u7684\u7279\u6b8a\u4e4b\u5904\u5c31\u5728\u4e8e\u5b83\u53ef\u4ee5\u88ab\u8986\u76d6\uff0c\u6240\u4ee5\u53ef\u4ee5\u901a\u8fc7\u8986\u76d6\u7684\u65b9\u6cd5\u8ba9\u5b83\u4e0d\u662f\u6bd4\u8f83\u5f15\u7528\u800c\u662f\u6bd4\u8f83\u6570\u636e\u5185\u5bb9\uff0c\u4f8b\u5982String\u7c7b\u7684equals\u65b9\u6cd5\u662f\u7528\u4e8e\u6bd4\u8f83\u4e24\u4e2a\u72ec\u7acb\u5bf9\u8c61\u7684\u5185\u5bb9\u662f\u5426\u76f8\u540c\uff0c\u5373\u5806\u4e2d\u7684\u5185\u5bb9\u662f\u5426\u76f8\u540c\uff0c\u4ee5\u4e0b\u9762\u7684\u4ee3\u7801\u4e3a\u4f8b\uff1a<\/p>\n
    String s1 = new String("Hello");\n    String s2 = new String("Hello");<\/code><\/pre>\n
\u4e24\u6761new\u8bed\u53e5\u521b\u5efa\u4e86\u4e24\u4e2a\u5bf9\u8c61\uff0c\u7136\u540e\u7528s1\u3001s2\u8fd9\u4e24\u4e2a\u53d8\u91cf\u5206\u522b\u6307\u5411\u4e00\u4e2a\u5bf9\u8c61\uff0c\u8fd9\u662f\u4e24\u4e2a\u4e0d\u540c\u7684\u5bf9\u8c61\uff0c\u5b83\u4eec\u7684\u9996\u5730\u5740\u662f\u4e0d\u540c\u7684\uff0c\u5373s1\u548cs2\u4e2d\u5b58\u50a8\u7684\u6570\u503c\u662f\u4e0d\u76f8\u540c\u7684\uff0c\u6240\u4ee5\uff0c\u8868\u8fbe\u5f0fs1==s2\u5c06\u8fd4\u56defalse\uff0c\u800c\u8fd9\u4e24\u4e2a\u5bf9\u8c61\u4e2d\u7684\u5185\u5bb9\u662f\u76f8\u540c\u7684\uff0c\u6240\u4ee5\uff0c\u8868\u8fbe\u5f0fs1.equals(s2)\u5c06\u8fd4\u56detrue\u3002<\/p>\n
\u5982\u679c\u4e00\u4e2a\u7c7b\u6ca1\u6709\u81ea\u5df1\u5b9a\u4e49equals()\u65b9\u6cd5\uff0c\u90a3\u4e48\u5b83\u5c06\u7ee7\u627fObject\u7c7b\u7684equals()\u65b9\u6cd5\uff0cObject\u7c7b\u7684equals()\u65b9\u6cd5\u7684\u5b9e\u73b0\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
    boolean equals(Object object){\n            return this==object;\n        }<\/code><\/pre>\n
\u901a\u8fc7\u4ee5\u4e0a\u4f8b\u5b50\u53ef\u4ee5\u8bf4\u660e\uff0c\u5982\u679c\u4e00\u4e2a\u7c7b\u6ca1\u6709\u81ea\u5df1\u5b9a\u4e49equals()\u65b9\u6cd5\uff0c\u5b83\u9ed8\u8ba4\u7684equals()\u65b9\u6cd5\uff08\u4eceObject\u7c7b\u7ee7\u627f\u7684\uff09\u5c31\u662f\u4f7f\u7528\u201c==\u201d\u8fd0\u7b97\u7b26\uff0c\u4e5f\u662f\u5728\u6bd4\u8f83\u4e24\u4e2a\u53d8\u91cf\u6307\u5411\u7684\u5bf9\u8c61\u662f\u5426\u662f\u540c\u4e00\u5bf9\u8c61\uff0c\u6b64\u65f6\u4f7f\u7528equals()\u65b9\u6cd5\u548c\u4f7f\u7528\u201c==\u201d\u8fd0\u7b97\u7b26\u4f1a\u5f97\u5230\u540c\u6837\u7684\u7ed3\u679c\u3002\u82e5\u6bd4\u8f83\u7684\u662f\u4e24\u4e2a\u72ec\u7acb\u7684\u5bf9\u8c61\uff0c\u5219\u603b\u8fd4\u56defalse\u3002\u5982\u679c\u7f16\u5199\u7684\u7c7b\u5e0c\u671b\u80fd\u591f\u6bd4\u8f83\u8be5\u7c7b\u521b\u5efa\u7684\u4e24\u4e2a\u5b9e\u4f8b\u5bf9\u8c61\u7684\u5185\u5bb9\u662f\u5426\u76f8\u540c\uff0c\u90a3\u4e48\u5fc5\u987b\u8986\u76d6equals()\u65b9\u6cd5\uff0c\u7531\u5f00\u53d1\u4eba\u5458\u81ea\u5df1\u7f16\u5199\u4ee3\u7801\u6765\u51b3\u5b9a\u5728\u4ec0\u4e48\u60c5\u51b5\u4e0b\u5373\u53ef\u8ba4\u4e3a\u4e24\u4e2a\u5bf9\u8c61\u7684\u5185\u5bb9\u662f\u76f8\u540c\u7684\u3002<\/p>\n
hashcode()\u548cequals()\u6bd4\u8f83\uff1a<\/h3>\n
hashcode\u7b80\u4ecb\uff1a<\/h4>\n
\n
\u54c8\u5e0c\u7801\u4ea7\u751f\u7684\u4f9d\u636e\uff1a\u54c8\u5e0c\u7801\u5e76\u4e0d\u662f\u5b8c\u5168\u552f\u4e00\u7684\uff0c\u5b83\u662f\u4e00\u79cd\u7b97\u6cd5<\/a>\uff0c\u8ba9\u540c\u4e00\u4e2a\u7c7b\u7684\u5bf9\u8c61\u6309\u7167\u81ea\u5df1\u4e0d\u540c\u7684\u7279\u5f81\u5c3d\u91cf\u7684\u6709\u4e0d\u540c\u7684\u54c8\u5e0c\u7801\uff0c\u4f46\u4e0d\u8868\u793a\u4e0d\u540c\u7684\u5bf9\u8c61\u54c8\u5e0c\u7801\u5b8c\u5168\u4e0d\u540c\u3002\u4e5f\u6709\u76f8\u540c\u7684\u60c5\u51b5\uff0c\u770b\u7a0b\u5e8f\u5458\u5982\u4f55\u5199\u54c8\u5e0c\u7801\u7684\u7b97\u6cd5\u3002<\/p>\n<\/blockquote>\n
hashCode()\u65b9\u6cd5\u548cequal()\u65b9\u6cd5\u7684\u4f5c\u7528\u5176\u5b9e\u4e00\u6837\uff0c\u5728Java<\/a>\u91cc\u90fd\u662f\u7528\u6765\u5bf9\u6bd4\u4e24\u4e2a\u5bf9\u8c61\u662f\u5426\u76f8\u7b49\u4e00\u81f4\uff0c\u90a3\u4e48equal()\u65e2\u7136\u5df2\u7ecf\u80fd\u5b9e\u73b0\u5bf9\u6bd4\u7684\u529f\u80fd\u4e86\uff0c\u4e3a\u4ec0\u4e48\u8fd8\u8981hashCode()\u5462\uff1f
\n\u56e0\u4e3a\u91cd\u5199\u7684equal\uff08\uff09\u91cc\u4e00\u822c\u6bd4\u8f83\u7684\u6bd4\u8f83\u5168\u9762\u6bd4\u8f83\u590d\u6742\uff0c\u8fd9\u6837\u6548\u7387\u5c31\u6bd4\u8f83\u4f4e\uff0c\u800c\u5229\u7528hashCode()\u8fdb\u884c\u5bf9\u6bd4\uff0c\u5219\u53ea\u8981\u751f\u6210\u4e00\u4e2ahash\u503c\u8fdb\u884c\u6bd4\u8f83\u5c31\u53ef\u4ee5\u4e86\uff0c\u6548\u7387\u5f88\u9ad8\uff0c\u90a3\u4e48hashCode()\u65e2\u7136\u6548\u7387\u8fd9\u4e48\u9ad8\u4e3a\u4ec0\u4e48\u8fd8\u8981equal()\u5462\uff1f
\n\u56e0\u4e3ahashCode()\u5e76\u4e0d\u662f\u5b8c\u5168\u53ef\u9760\uff0c\u6709\u65f6\u5019\u4e0d\u540c\u7684\u5bf9\u8c61\u4ed6\u4eec\u751f\u6210\u7684hashcode\u4e5f\u4f1a\u4e00\u6837\uff08\u751f\u6210hash\u503c\u5f97\u516c\u5f0f\u53ef\u80fd\u5b58\u5728\u7684\u95ee\u9898\uff09\uff0c\u6240\u4ee5hashCode()\u53ea\u80fd\u8bf4\u662f\u5927\u90e8\u5206\u65f6\u5019\u53ef\u9760\uff0c\u5e76\u4e0d\u662f\u7edd\u5bf9\u53ef\u9760\uff0c\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u5f97\u51fa\uff1a
\n1.equal()\u76f8\u7b49\u7684\u4e24\u4e2a\u5bf9\u8c61\u4ed6\u4eec\u7684hashCode()\u80af\u5b9a\u76f8\u7b49\uff0c\u4e5f\u5c31\u662f\u7528equal()\u5bf9\u6bd4\u662f\u7edd\u5bf9\u53ef\u9760\u7684\u3002
\n2.hashCode()\u76f8\u7b49\u7684\u4e24\u4e2a\u5bf9\u8c61\u4ed6\u4eec\u7684equal()\u4e0d\u4e00\u5b9a\u76f8\u7b49\uff0c\u4e5f\u5c31\u662fhashCode()\u4e0d\u662f\u7edd\u5bf9\u53ef\u9760\u7684\u3002<\/p>\n
hashCode()\u65b9\u6cd5\u662f\u4eceObject\u7c7b\u4e2d\u7ee7\u627f\u8fc7\u6765\u7684\uff0c\u5b83\u4e5f\u7528\u6765\u9274\u5b9a\u4e24\u4e2a\u5bf9\u8c61\u662f\u5426\u76f8\u7b49\u3002Object\u7c7b\u4e2d\u7684hashCode()\u65b9\u6cd5\u8fd4\u56de\u5bf9\u8c61\u5728\u5185\u5b58\u4e2d\u5730\u5740\u8f6c\u6362\u6210\u7684\u4e00\u4e2aint\u503c\uff0c\u6240\u4ee5\u5982\u679c\u6ca1\u6709\u91cd\u5199hashCode()\u65b9\u6cd5\uff0c\u4efb\u4f55\u5bf9\u8c61\u7684hashCode()\u65b9\u6cd5\u90fd\u662f\u4e0d\u76f8\u7b49\u7684\u3002
\n\u867d\u7136equals()\u65b9\u6cd5\u4e5f\u662f\u7528\u6765\u5224\u65ad\u4e24\u4e2a\u5bf9\u8c61\u662f\u5426\u76f8\u7b49\u7684\uff0c\u4f46\u662f\u5b83\u4e0ehashCode()\u65b9\u6cd5\u662f\u6709\u533a\u522b\u7684\u3002\u4e00\u822c\u6765\u8bb2\uff0cequals()\u65b9\u6cd5\u662f\u7ed9\u7528\u6237\u8c03\u7528\u7684\uff0c\u5982\u679c\u9700\u8981\u5224\u65ad\u4e24\u4e2a\u5bf9\u8c61\u662f\u5426\u76f8\u7b49\u7684\uff0c\u53ef\u4ee5\u91cd\u5199equals()\u65b9\u6cd5\uff0c\u7136\u540e\u5728\u4ee3\u7801\u4e2d\u8c03\u7528\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u5224\u65ad\u5b83\u4eec\u662f\u5426\u76f8\u7b49\u4e86\u3002\u5bf9\u4e8ehashCode()\u65b9\u6cd5\uff0c\u7528\u6237\u4e00\u822c\u4e0d\u4f1a\u53bb\u8c03\u7528\u5b83\uff0c\u4f8b\u5982\u5728hashmap\u4e2d\uff0c\u7531\u4e8ekey\u662f\u4e0d\u53ef\u4ee5\u91cd\u590d\u7684\uff0c\u5b83\u5728\u5224\u65adkey\u662f\u5426\u91cd\u590d\u65f6\u5c31\u5224\u65ad\u4e86hashCode()\u65b9\u6cd5\uff0c\u800c\u4e14\u4e5f\u7528\u5230\u4e86equals()\u65b9\u6cd5\u3002\u6b64\u5904\u201c\u4e0d\u53ef\u4ee5\u91cd\u590d\u201d\u6307\u7684\u662fequals()\u548chashCode()\u53ea\u8981\u6709\u4e00\u4e2a\u4e0d\u7b49\u5c31\u53ef\u4ee5\u4e86\u3002\u6240\u4ee5\uff0chashCode()\u65b9\u6cd5\u76f8\u5f53\u4e8e\u662f\u4e00\u4e2a\u5bf9\u8c61\u7684\u7f16\u7801\uff0c\u5c31\u597d\u50cf\u6587\u4ef6\u4e2d\u7684md5\uff0c\u5b83\u4e0eequals()\u65b9\u6cd5\u7684\u4e0d\u540c\u4e4b\u5904\u5c31\u5728\u4e8e\u5b83\u8fd4\u56de\u7684\u662fint\u578b\uff0c\u6bd4\u8f83\u8d77\u6765\u4e0d\u76f4\u89c2\u3002
\n\u4e00\u822c\u5728\u8986\u76d6equals()\u65b9\u6cd5\u7684\u540c\u65f6\u4e5f\u8981\u8986\u76d6hashCode()\u65b9\u6cd5\uff0c\u5426\u5219\uff0c\u5c31\u4f1a\u8fdd\u53cdObject.hashCode\u7684\u901a\u7528\u7ea6\u5b9a\uff0c\u4ece\u800c\u5bfc\u81f4\u8be5\u7c7b\u65e0\u6cd5\u4e0e\u6240\u6709\u57fa\u4e8e\u6563\u5217\u503c(hash)\u96c6\u5408\u7c7b(HashMap\u3001HashSet\u548cHashtable)\u7ed3\u5408\u5728\u4e00\u8d77\u6b63\u5e38\u8fd0\u884c\u3002
\nhashCode()\u65b9\u6cd5\u7684\u8fd4\u56de\u503c\u548cequals()\u65b9\u6cd5\u7684\u5173\u7cfb\u5982\u4e0b\uff1a<\/p>\n
\n
x.equals(y)\u8fd4\u56detrue\uff0c\u5373\u4e24\u4e2a\u5bf9\u8c61\u6839\u636eequals()\u65b9\u6cd5\u6bd4\u8f83\u662f\u76f8\u7b49\u7684\uff0c\u90a3\u4e48\u8c03\u7528\u8fd9\u4e24\u4e2a\u5bf9\u8c61\u4e2d\u4efb\u610f\u4e00\u4e2a\u5bf9\u8c61\u7684hashCode()\u65b9\u6cd5\u90fd\u5fc5\u987b\u4ea7\u751f\u540c\u6837\u7684\u6574\u6570\u7ed3\u679c\u3002\u5982\u679cx.equals(y)\u8fd4\u56defalse\uff0c\u5373\u4e24\u4e2a\u5bf9\u8c61\u6839\u636eequals()\u65b9\u6cd5\u6bd4\u8f83\u662f\u4e0d\u76f8\u7b49\u7684\uff0c\u90a3\u4e48x\u548cy\u7684hashCode()\u65b9\u6cd5\u7684\u8fd4\u56de\u503c\u6709\u53ef\u80fd\u76f8\u7b49\uff0c\u4e5f\u6709\u53ef\u80fd\u4e0d\u76f8\u7b49\u3002\u53cd\u4e4b\uff0chashCode()\u65b9\u6cd5\u7684\u8fd4\u56de\u503c\u4e0d\u76f8\u7b49\uff0c\u4e00\u5b9a\u80fd\u63a8\u51faequals()\u65b9\u6cd5\u7684\u8fd4\u56de\u503c\u4e5f\u4e0d\u76f8\u7b49\uff0c\u800chashCode()\u65b9\u6cd5\u7684\u8fd4\u56de\u503c\u76f8\u7b49\uff0cequals()\u65b9\u6cd5\u7684\u8fd4\u56de\u503c\u5219\u53ef\u80fd\u76f8\u7b49\uff0c\u4e5f\u53ef\u80fd\u4e0d\u76f8\u7b49\u3002<\/p>\n<\/blockquote>\n
hashcode()\u548cequals()\u5173\u7cfb\u603b\u7ed3<\/h3>\n
    \n
  1. \u7b2c\u4e00\u79cd \u4e0d\u4f1a\u521b\u5efa\u201c\u7c7b\u5bf9\u5e94\u7684\u6563\u5217\u8868\u201d
    \n\u8fd9\u91cc\u6240\u8bf4\u7684\u201c\u4e0d\u4f1a\u521b\u5efa\u7c7b\u5bf9\u5e94\u7684\u6563\u5217\u8868\u201d\u662f\u8bf4\uff1a\u6211\u4eec\u4e0d\u4f1a\u5728HashSet, Hashtable, HashMap\u7b49\u7b49\u8fd9\u4e9b\u672c\u8d28\u662f\u6563\u5217\u8868\u7684\u6570\u636e\u7ed3\u6784\u4e2d\uff0c\u7528\u5230\u8be5\u7c7b\u3002\u4f8b\u5982\uff0c\u4e0d\u4f1a\u521b\u5efa\u8be5\u7c7b\u7684HashSet\u96c6\u5408\u3002
    \n\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u8be5\u7c7b\u7684\u201chashCode() \u548c equals() \u201d\u6ca1\u6709\u534a\u6bdb\u94b1\u5173\u7cfb\u7684\uff01
    \n\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0cequals() \u7528\u6765\u6bd4\u8f83\u8be5\u7c7b\u7684\u4e24\u4e2a\u5bf9\u8c61\u662f\u5426\u76f8\u7b49\u3002\u800chashCode() \u5219\u6839\u672c\u6ca1\u6709\u4efb\u4f55\u4f5c\u7528\uff0c\u6240\u4ee5\uff0c\u4e0d\u7528\u7406\u4f1ahashCode()\u3002<\/li>\n
  2. \u7b2c\u4e8c\u79cd \u4f1a\u521b\u5efa\u201c\u7c7b\u5bf9\u5e94\u7684\u6563\u5217\u8868\u201d
    \n\u8fd9\u91cc\u6240\u8bf4\u7684\u201c\u4f1a\u521b\u5efa\u7c7b\u5bf9\u5e94\u7684\u6563\u5217\u8868\u201d\u662f\u8bf4\uff1a\u6211\u4eec\u4f1a\u5728HashSet, Hashtable, HashMap\u7b49\u7b49\u8fd9\u4e9b\u672c\u8d28\u662f\u6563\u5217\u8868\u7684\u6570\u636e\u7ed3\u6784\u4e2d\uff0c\u7528\u5230\u8be5\u7c7b\u3002\u4f8b\u5982\uff0c\u4f1a\u521b\u5efa\u8be5\u7c7b\u7684HashSet\u96c6\u5408\u3002
    \n\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u8be5\u7c7b\u7684\u201chashCode() \u548c equals() \u201d\u662f\u6709\u5173\u7cfb\u7684\uff1a
    \n1)\u3001\u5982\u679c\u4e24\u4e2a\u5bf9\u8c61\u76f8\u7b49\uff0c\u90a3\u4e48\u5b83\u4eec\u7684hashCode()\u503c\u4e00\u5b9a\u76f8\u540c\u3002
    \n\u8fd9\u91cc\u7684\u76f8\u7b49\u662f\u6307\uff0c\u901a\u8fc7equals()\u6bd4\u8f83\u4e24\u4e2a\u5bf9\u8c61\u65f6\u8fd4\u56detrue\u3002
    \n2)\u3001\u5982\u679c\u4e24\u4e2a\u5bf9\u8c61hashCode()\u76f8\u7b49\uff0c\u5b83\u4eec\u5e76\u4e0d\u4e00\u5b9a\u76f8\u7b49\u3002
    \n\u56e0\u4e3a\u5728\u6563\u5217\u8868\u4e2d\uff0chashCode()\u76f8\u7b49\uff0c\u5373\u4e24\u4e2a\u952e\u503c\u5bf9\u7684\u54c8\u5e0c\u503c\u76f8\u7b49\u3002\u7136\u800c\u54c8\u5e0c\u503c\u76f8\u7b49\uff0c\u5e76\u4e0d\u4e00\u5b9a\u80fd\u5f97\u51fa\u952e\u503c\u5bf9\u76f8\u7b49\u3002\u8865\u5145\u8bf4\u4e00\u53e5\uff1a\u201c\u4e24\u4e2a\u4e0d\u540c\u7684\u952e\u503c\u5bf9\uff0c\u54c8\u5e0c\u503c\u76f8\u7b49\u201d\uff0c\u8fd9\u5c31\u662f\u54c8\u5e0c\u51b2\u7a81\u3002
    \n\u6b64\u5916\uff0c\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\u3002\u82e5\u8981\u5224\u65ad\u4e24\u4e2a\u5bf9\u8c61\u662f\u5426\u76f8\u7b49\uff0c\u9664\u4e86\u8981\u8986\u76d6equals()\u4e4b\u5916\uff0c\u4e5f\u8981\u8986\u76d6hashCode()\u51fd\u6570\u3002\u5426\u5219\uff0cequals()\u65e0\u6548\u3002
    \n\u4f8b\u5982\uff0c\u521b\u5efaPerson\u7c7b\u7684HashSet\u96c6\u5408\uff0c\u5fc5\u987b\u540c\u65f6\u8986\u76d6Person\u7c7b\u7684equals() \u548c hashCode()\u65b9\u6cd5\u3002
    \n\u5982\u679c\u5355\u5355\u53ea\u662f\u8986\u76d6equals()\u65b9\u6cd5\u3002\u6211\u4eec\u4f1a\u53d1\u73b0\uff0cequals()\u65b9\u6cd5\u6ca1\u6709\u8fbe\u5230\u6211\u4eec\u60f3\u8981\u7684\u6548\u679c\u3002
    \nTHAT IS OVER!<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"
    https:\/\/www.jianshu.com\/p\/443e678291eb \u9996\u5148\uff0c\u6211\u4eec\u8bb2\u8bb2\u4e00\u822c\u5e38\u7528\u7684\u201c==\u201d […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[136],"tags":[42],"class_list":["post-546","post","type-post","status-publish","format-standard","hentry","category-notes-misc","tag-java"],"_links":{"self":[{"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=\/wp\/v2\/posts\/546","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=546"}],"version-history":[{"count":1,"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=\/wp\/v2\/posts\/546\/revisions"}],"predecessor-version":[{"id":2042,"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=\/wp\/v2\/posts\/546\/revisions\/2042"}],"wp:attachment":[{"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=546"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=546"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.ttwow.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=546"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}