{"id":499,"date":"2023-07-29T11:14:44","date_gmt":"2023-10-30T09:22:33","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/%e6%96%b9%e6%b3%95x%e5%af%b9%e4%ba%8e%e7%b1%bb%e5%9e%8by%e5%ad%98%e5%9c%a8%e6%ad%a7%e4%b9%89%e3%80%82java%e5%ad%98%e5%9c%a8%e6%96%b9%e6%b3%95%e8%b0%83%e7%94%a8%e4%b8%8d%e6%98%8e%e7%a1%ae%e7%9a%84\/"},"modified":"2025-08-02T14:21:02","modified_gmt":"2025-08-02T06:21:02","slug":"%e6%96%b9%e6%b3%95x%e5%af%b9%e4%ba%8e%e7%b1%bb%e5%9e%8by%e5%ad%98%e5%9c%a8%e6%ad%a7%e4%b9%89%e3%80%82java%e5%ad%98%e5%9c%a8%e6%96%b9%e6%b3%95%e8%b0%83%e7%94%a8%e4%b8%8d%e6%98%8e%e7%a1%ae%e7%9a%84","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%96%b9%e6%b3%95x%e5%af%b9%e4%ba%8e%e7%b1%bb%e5%9e%8by%e5%ad%98%e5%9c%a8%e6%ad%a7%e4%b9%89%e3%80%82java%e5%ad%98%e5%9c%a8%e6%96%b9%e6%b3%95%e8%b0%83%e7%94%a8%e4%b8%8d%e6%98%8e%e7%a1%ae%e7%9a%84\/","title":{"rendered":"Java\u65b9\u6cd5\u8c03\u7528\u6b67\u4e49\u95ee\u9898\u5b8c\u5168\u6307\u5357\uff1a\u89e3\u51b3\u65b9\u6cd5X\u5bf9\u7c7b\u578bY\u7684\u6b67\u4e49\u4e0e\u7a7a\u9519\u8bef"},"content":{"rendered":"<p>\u5982\u679c\u60a8\u5728\u9605\u8bfb\u8fd9\u7bc7\u6587\u7ae0\uff0c\u53ef\u80fd\u662f\u56e0\u4e3a\u5728\u7ec8\u7aef\u6216\u4efb\u4f55Java\u96c6\u6210\u5f00\u53d1\u73af\u5883\u4e2d\u7f16\u8bd1Java\u7a0b\u5e8f\u65f6\u9047\u5230\u4e86\u7c7b\u578bY\u7684\u65b9\u6cd5X\u5b58\u5728\u6b67\u4e49\u7684\u9519\u8bef\u3002<\/p>\n<h2>Java\u6a21\u7cca\u65b9\u6cd5\u8c03\u7528<\/h2>\n<p>\u8fd9\u91cc\u6211\u5c06\u89e3\u91ca\u4e3a\u4ec0\u4e48Java\u4f1a\u51fa\u73b0\u6a21\u7cca\u7684\u65b9\u6cd5\u8c03\u7528\u9519\u8bef\uff0c\u5e76\u4e3e\u4e00\u4e9b\u4f8b\u5b50\u3002\u6a21\u7cca\u7684\u65b9\u6cd5\u8c03\u7528\u9519\u8bef\u901a\u5e38\u51fa\u73b0\u5728\u65b9\u6cd5\u91cd\u8f7d\u4e2d\uff0c\u7f16\u8bd1\u5668\u65e0\u6cd5\u786e\u5b9a\u5e94\u8be5\u4f7f\u7528\u91cd\u8f7d\u7684\u54ea\u4e2a\u65b9\u6cd5\u3002\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u5982\u4e0b\u7684Java\u7a0b\u5e8f\u3002<\/p>\n<pre class=\"post-pre\"><code>package com.Olivia.errors;\r\n\r\npublic class Test {\r\n\r\n\tpublic void foo(Object o) {\r\n\t\tSystem.out.println(\"Object\");\r\n\t}\r\n\r\n\tpublic void foo(String s) {\r\n\t\tSystem.out.println(\"String\");\r\n\t}\r\n\tpublic static void main(String[] args) {\r\n\t\tnew Test().foo(null);\r\n\t}\r\n\r\n}\r\n<\/code><\/pre>\n<p>\u4e0a\u8ff0\u7684\u7a0b\u5e8f\u7f16\u8bd1\u6210\u529f\uff0c\u5e76\u4e14\u8fd0\u884c\u65f6\u6253\u5370\u51fa\u4e86\u201cString\u201d\u3002\u56e0\u6b64\uff0c\u7a0b\u5e8f\u8c03\u7528\u4e86\u65b9\u6cd5 foo(String s)\u3002\u8fd9\u662f\u56e0\u4e3aJava\u7f16\u8bd1\u5668\u8bd5\u56fe\u627e\u51fa\u5177\u6709\u6700\u5177\u4f53\u8f93\u5165\u53c2\u6570\u7684\u65b9\u6cd5\u6765\u8c03\u7528\u4e00\u4e2a\u65b9\u6cd5\u3002\u6211\u4eec\u77e5\u9053Object\u662fString\u7684\u7236\u7c7b\uff0c\u6240\u4ee5\u9009\u62e9\u662f\u5f88\u5bb9\u6613\u7684\u3002\u4ee5\u4e0b\u662f\u6765\u81eaJava\u8bed\u8a00\u89c4\u8303\u7684\u6458\u5f55\u3002<\/p>\n<p>\u5982\u679c\u4e00\u4e2a\u65b9\u6cd5\u8c03\u7528\u6709\u591a\u4e2a\u53ef\u8bbf\u95ee\u4e14\u9002\u7528\u7684\u6210\u5458\u65b9\u6cd5&#8230;Java\u7f16\u7a0b\u8bed\u8a00\u4f1a\u9009\u62e9\u6700\u5177\u4f53\u7684\u65b9\u6cd5\u3002<\/p>\n<p>\u6211\u4f20\u5165\u201cnull\u201d\u7684\u539f\u56e0\u662f\u56e0\u4e3a\u5b83\u5bf9\u4e8e\u4efb\u4f55\u7c7b\u578b\u7684\u53c2\u6570\u90fd\u6709\u6548\uff0c\u5982\u679c\u6211\u4eec\u4f20\u5165\u5176\u4ed6\u5bf9\u8c61\uff0c\u90a3\u4e48\u5bf9\u4e8eJava\u7f16\u8bd1\u5668\u6765\u8bf4\uff0c\u9009\u62e9\u65b9\u6cd5\u662f\u5f88\u5bb9\u6613\u7684\u3002<\/p>\n<h3>\u65b9\u6cd5X\u5bf9\u4e8e\u7c7b\u578bY\u6765\u8bf4\u662f\u6a21\u7cca\u4e0d\u6e05\u7684\u3002<\/h3>\n<p>\u73b0\u5728\u8ba9\u6211\u4eec\u5c06\u4e0b\u9762\u7684\u65b9\u6cd5\u6dfb\u52a0\u5230\u4e0a\u8ff0\u4ee3\u7801\u4e2d\u3002<\/p>\n<pre class=\"post-pre\"><code>public void foo(Integer i){\r\n\tSystem.out.println(\"Integer\");\r\n}\r\n<\/code><\/pre>\n<p>\u4f60\u4f1a\u56e0\u4e3aTest\u7c7b\u4e2d\u7684foo(Object)\u65b9\u6cd5\u5177\u6709\u6b67\u4e49\u800c\u5f97\u5230\u7f16\u8bd1\u65f6\u9519\u8bef\uff0c\u56e0\u4e3aString\u548cInteger\u7c7b\u90fd\u5c06Object\u4f5c\u4e3a\u7236\u7c7b\u5e76\u4e14\u5b83\u4eec\u4e4b\u95f4\u6ca1\u6709\u7ee7\u627f\u5173\u7cfb\u3002\u56e0\u6b64\uff0cJava\u7f16\u8bd1\u5668\u4e0d\u4f1a\u5c06\u5b83\u4eec\u4e2d\u7684\u4efb\u4f55\u4e00\u4e2a\u89c6\u4e3a\u66f4\u52a0\u5177\u4f53\uff0c\u4ece\u800c\u5bfc\u81f4\u8fd9\u4e2a\u65b9\u6cd5\u5177\u6709\u6b67\u4e49\u7684\u8c03\u7528\u9519\u8bef\u3002<\/p>\n<pre class=\"post-pre\"><code>package com.Olivia.strings;\r\n\r\npublic class Test {\r\n\r\n\tpublic void foo(Object o) {\r\n\t\tSystem.out.println(\"Object\");\r\n\t}\r\n\r\n\tpublic void foo(Exception e) {\r\n\t\tSystem.out.println(\"Exception\");\r\n\t}\r\n\r\n\tpublic void foo(NullPointerException ne) {\r\n\t\tSystem.out.println(\"NullPointerException\");\r\n\t}\r\n\r\n\tpublic static void main(String[] args) {\r\n\t\tnew Test().foo(null);\r\n\t}\r\n\r\n}\r\n<\/code><\/pre>\n<p>\u6b63\u5982\u4e0a\u8ff0\u89e3\u91ca\uff0cfoo\uff08NullPointerException ne\uff09\u662f\u6700\u5177\u4f53\u7684\u65b9\u6cd5\uff0c\u56e0\u4e3a\u5b83\u7ee7\u627f\u81eaException\u7c7b\uff0c\u56e0\u6b64\u8fd9\u6bb5\u4ee3\u7801\u7f16\u8bd1\u826f\u597d\uff0c\u5e76\u5728\u6267\u884c\u65f6\u6253\u5370\u51fa\u201cNullPointerException\u201d\u3002\u5e0c\u671b\u672c\u6587\u80fd\u591f\u89e3\u51b3\u60a8\u5bf9Java\u6a21\u68f1\u4e24\u53ef\u7684\u65b9\u6cd5\u8c03\u7528\u7f16\u8bd1\u5668\u9519\u8bef\u6709\u5173\u7684\u4efb\u4f55\u7591\u95ee\uff0c\u8bf7\u5728\u8bc4\u8bba\u4e2d\u6dfb\u52a0\u60a8\u7684\u89c2\u70b9\u6216\u5982\u6709\u7591\u60d1\u53ef\u63d0\u51fa\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u679c\u60a8\u5728\u9605\u8bfb\u8fd9\u7bc7\u6587\u7ae0\uff0c\u53ef\u80fd\u662f\u56e0\u4e3a\u5728\u7ec8\u7aef\u6216\u4efb\u4f55Java\u96c6\u6210\u5f00\u53d1\u73af\u5883\u4e2d\u7f16\u8bd1Java\u7a0b\u5e8f\u65f6\u9047\u5230\u4e86\u7c7b\u578bY\u7684\u65b9\u6cd5X\u5b58\u5728\u6b67 [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[1499,1494,1501,1500,1502],"class_list":{"0":"post-499","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-uncategorized","7":"tag-java","10":"tag-1500","11":"tag-1502"},"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>Java\u65b9\u6cd5\u8c03\u7528\u6b67\u4e49\u95ee\u9898\u5b8c\u5168\u6307\u5357\uff1a\u89e3\u51b3\u65b9\u6cd5X\u5bf9\u7c7b\u578bY\u7684\u6b67\u4e49\u4e0e\u7a7a\u9519\u8bef - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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