{"id":203066,"date":"2025-05-22T11:16:49","date_gmt":"2025-05-22T03:16:49","guid":{"rendered":"https:\/\/server.hk\/cnblog\/203066\/"},"modified":"2025-05-22T11:16:49","modified_gmt":"2025-05-22T03:16:49","slug":"java-%e6%96%b9%e6%b3%95%e9%87%8d%e8%bd%bd%e7%9a%84%e5%ae%9e%e7%8e%b0%e5%8e%9f%e7%90%86%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/203066\/","title":{"rendered":"Java \u65b9\u6cd5\u91cd\u8f7d\u7684\u5b9e\u73b0\u539f\u7406\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>Java \u65b9\u6cd5\u91cd\u8f7d\u7684\u5b9e\u73b0\u539f\u7406\u662f\u4ec0\u4e48\uff1f<\/h1>\n<p>\u672c\u7bc7\u6587\u7ae0\u7ed9\u5927\u5bb6\u5206\u4eab\u300aJava \u65b9\u6cd5\u91cd\u8f7d\u7684\u5b9e\u73b0\u539f\u7406\u662f\u4ec0\u4e48\uff1f\u300b\uff0c\u8986\u76d6\u4e86\u6587\u7ae0\u7684\u5e38\u89c1\u57fa\u7840\u77e5\u8bc6\uff0c\u5176\u5b9e\u4e00\u4e2a\u8bed\u8a00\u7684\u5168\u90e8\u77e5\u8bc6\u70b9\u4e00\u7bc7\u6587\u7ae0\u662f\u4e0d\u53ef\u80fd\u8bf4\u5b8c\u7684\uff0c\u4f46\u5e0c\u671b\u901a\u8fc7\u8fd9\u4e9b\u95ee\u9898\uff0c\u8ba9\u8bfb\u8005\u5bf9\u81ea\u5df1\u7684\u638c\u63e1\u7a0b\u5ea6\u6709\u4e00\u5b9a\u7684\u8ba4\u8bc6(B \u6570)\uff0c\u4ece\u800c\u5f25\u8865\u81ea\u5df1\u7684\u4e0d\u8db3\uff0c\u66f4\u597d\u7684\u638c\u63e1\u5b83\u3002<\/p>\n<p>Java \u65b9\u6cd5\u91cd\u8f7d\u539f\u7406\uff1a\u901a\u8fc7\u65b9\u6cd5\u7b7e\u540d\uff08\u65b9\u6cd5\u540d\u548c\u53c2\u6570\u5217\u8868\uff09\u533a\u5206\u4e0d\u540c\u65b9\u6cd5\u7248\u672c\uff0c\u7f16\u8bd1\u5668\u6839\u636e\u7b7e\u540d\u8c03\u7528\u6700\u5339\u914d\u7248\u672c\u3002\u5b9e\u73b0\u539f\u7406\uff1aJVM \u52a0\u8f7d\u5e38\u91cf\u6c60\u5f15\u7528\uff0c\u67e5\u627e\u5339\u914d\u7b7e\u540d\u7684\u65b9\u6cd5\uff0c\u8c03\u7528\u7279\u5b9a\u7248\u672c\u3002\u793a\u4f8b\uff1aCalculator \u7c7b\u5b9a\u4e49\u4e86\u4e24\u4e2a add() \u65b9\u6cd5\uff08\u4e00\u4e2a\u63a5\u53d7\u6574\u6570\uff0c\u53e6\u4e00\u4e2a\u63a5\u53d7\u6d6e\u70b9\uff09\u548c\u4e24\u4e2a printResult() \u65b9\u6cd5\uff08\u4e00\u4e2a\u5904\u7406\u6574\u6570\uff0c\u53e6\u4e00\u4e2a\u5904\u7406\u6d6e\u70b9\uff09\uff0c\u6f14\u793a\u4e86\u65b9\u6cd5\u91cd\u8f7d\u7684\u5b9e\u9645\u5e94\u7528\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241027\/1730034586671e3b9a452dd.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>Java \u65b9\u6cd5\u91cd\u8f7d\u7684\u5b9e\u73b0\u539f\u7406<\/strong><\/p>\n<p>Java \u65b9\u6cd5\u91cd\u8f7d\u5141\u8bb8\u5728\u540c\u4e00\u4e2a\u7c7b\u4e2d\u5b9a\u4e49\u591a\u4e2a\u540c\u540d\u65b9\u6cd5\uff0c\u4f46\u5b83\u4eec\u7684\u53c2\u6570\u5217\u8868\u4e0d\u540c\u3002\u8fd9\u662f Java \u4e2d\u591a\u6001\u6027\u7684\u4e00\u4e2a\u91cd\u8981\u7279\u6027\u3002<\/p>\n<p><strong>\u539f\u7406<\/strong><\/p>\n<p>\u65b9\u6cd5\u91cd\u8f7d\u57fa\u4e8e\u65b9\u6cd5\u7b7e\u540d\u6765\u533a\u5206\u4e0d\u540c\u7684\u65b9\u6cd5\u7248\u672c\u3002\u65b9\u6cd5\u7b7e\u540d\u7531\u65b9\u6cd5\u540d\u548c\u53c2\u6570\u5217\u8868\u7ec4\u6210\uff0c\u53c2\u6570\u7684\u7c7b\u578b\u548c\u987a\u5e8f\u5fc5\u987b\u4e00\u81f4\u3002<\/p>\n<p>Java \u7f16\u8bd1\u5668\u5728\u89e3\u6790\u4ee3\u7801\u65f6\uff0c\u4f1a\u6839\u636e\u65b9\u6cd5\u7b7e\u540d\u6765\u67e5\u627e\u8981\u8c03\u7528\u7684\u6b63\u786e\u65b9\u6cd5\u7248\u672c\u3002\u5982\u679c\u6709\u591a\u4e2a\u7248\u672c\u5339\u914d\uff0c\u7f16\u8bd1\u5668\u4f1a\u9009\u62e9\u4e0e\u5b9e\u9645\u8c03\u7528\u53c2\u6570\u5217\u8868\u6700\u5339\u914d\u7684\u7248\u672c\u3002<\/p>\n<p><strong>\u5b9e\u73b0<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u65b9\u6cd5\u91cd\u8f7d\u7531\u5b57\u8282\u7801\u6307\u4ee4 LDC \u548c INVOKESPECIAL \u5b9e\u73b0\uff1a<\/p>\n<ul>\n<li><strong>LDC:<\/strong> \u52a0\u8f7d\u65b9\u6cd5\u7684\u5e38\u91cf\u6c60\u5f15\u7528\u5230\u64cd\u4f5c\u6570\u6808\u4e2d\u3002<\/li>\n<li><strong>INVOKESPECIAL:<\/strong> \u8c03\u7528\u5177\u6709\u7ed9\u5b9a\u65b9\u6cd5\u7b7e\u540d\u7684\u7279\u6b8a\u65b9\u6cd5\u3002<\/li>\n<\/ul>\n<p>\u5f53\u8c03\u7528\u91cd\u8f7d\u65b9\u6cd5\u65f6\uff0cJava \u865a\u62df\u673a (JVM) \u4f1a\uff1a<\/p>\n<ol>\n<li>\u52a0\u8f7d\u65b9\u6cd5\u7684\u5e38\u91cf\u6c60\u5f15\u7528\u3002<\/li>\n<li>\u67e5\u627e\u4e0e\u8c03\u7528\u7b7e\u540d\u5339\u914d\u7684\u65b9\u6cd5\u3002<\/li>\n<li>\u8c03\u7528\u8be5\u7279\u5b9a\u65b9\u6cd5\u7248\u672c\u3002<\/li>\n<\/ol>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a Java \u65b9\u6cd5\u91cd\u8f7d\u7684\u4f8b\u5b50\uff1a<\/p>\n<pre>class Calculator {\n    public int add(int a, int b) {\n        return a + b;\n    }\n\n    public double add(double a, double b) {\n        return a + b;\n    }\n\n    public void printResult(int result) {\n        System.out.println(\"\u6574\u578b\u7ed3\u679c: \" + result);\n    }\n\n    public void printResult(double result) {\n        System.out.println(\"\u6d6e\u70b9\u7ed3\u679c: \" + result);\n    }\n}<\/pre>\n<p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cCalculator \u7c7b\u5b9a\u4e49\u4e86\u4e24\u4e2a add() \u65b9\u6cd5\u7684\u91cd\u8f7d\u7248\u672c\uff0c\u4e00\u4e2a\u63a5\u53d7\u6574\u6570\u53c2\u6570\uff0c\u53e6\u4e00\u4e2a\u63a5\u53d7\u6d6e\u70b9\u53c2\u6570\u3002\u5b83\u8fd8\u5b9a\u4e49\u4e86\u4e24\u4e2a printResult() \u65b9\u6cd5\uff0c\u5206\u522b\u5904\u7406\u6574\u6570\u548c\u6d6e\u70b9\u7ed3\u679c\u3002<\/p>\n<pre>public static void main(String[] args) {\n    Calculator calc = new Calculator();\n\n    int intResult = calc.add(3, 5);\n    double doubleResult = calc.add(2.5, 6.3);\n\n    calc.printResult(intResult);\n    calc.printResult(doubleResult);\n}<\/pre>\n<p>\u5728 main() \u65b9\u6cd5\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e00\u4e2a Calculator \u5bf9\u8c61\uff0c\u5e76\u4f7f\u7528\u91cd\u8f7d\u7684\u65b9\u6cd5\u8fdb\u884c\u6574\u6570\u548c\u6d6e\u70b9\u8ba1\u7b97\u3002\u7136\u540e\u6211\u4eec\u8c03\u7528\u91cd\u8f7d\u7684 printResult() \u65b9\u6cd5\u6765\u6253\u5370\u7ed3\u679c\u3002<\/p>\n<p>\u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300aJava \u65b9\u6cd5\u91cd\u8f7d\u7684\u5b9e\u73b0\u539f\u7406\u662f\u4ec0\u4e48\uff1f\u300b\uff0c\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff01\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u7ed9\u5927\u5bb6\u5206\u4eab\u66f4\u591a\u6587\u7ae0\u77e5\u8bc6\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java \u65b9\u6cd5\u91cd\u8f7d\u7684\u5b9e\u73b0\u539f\u7406\u662f\u4ec0&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-203066","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203066","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=203066"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203066\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=203066"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=203066"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=203066"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}