{"id":202785,"date":"2025-05-22T11:49:00","date_gmt":"2025-05-22T03:49:00","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202785\/"},"modified":"2025-05-22T11:49:00","modified_gmt":"2025-05-22T03:49:00","slug":"java-%e5%87%bd%e6%95%b0%e7%9a%84%e5%8f%82%e6%95%b0%e4%bc%a0%e9%80%92%e6%9c%ba%e5%88%b6%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202785\/","title":{"rendered":"Java \u51fd\u6570\u7684\u53c2\u6570\u4f20\u9012\u673a\u5236\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

Java \u51fd\u6570\u7684\u53c2\u6570\u4f20\u9012\u673a\u5236\u662f\u4ec0\u4e48\uff1f<\/h1>\n

\u77e5\u8bc6\u70b9\u638c\u63e1\u4e86\uff0c\u8fd8\u9700\u8981\u4e0d\u65ad\u7ec3\u4e60\u624d\u80fd\u719f\u7ec3\u8fd0\u7528\u3002\u4e0b\u9762\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u4e2a\u6587\u7ae0\u5f00\u53d1\u5b9e\u6218\uff0c\u624b\u628a\u624b\u6559\u5927\u5bb6\u5b66\u4e60\u300aJava \u51fd\u6570\u7684\u53c2\u6570\u4f20\u9012\u673a\u5236\u662f\u4ec0\u4e48\uff1f\u300b\uff0c\u5728\u5b9e\u73b0\u529f\u80fd\u7684\u8fc7\u7a0b\u4e2d\u4e5f\u5e26\u5927\u5bb6\u91cd\u65b0\u6e29\u4e60\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6e29\u6545\u800c\u77e5\u65b0\uff0c\u56de\u5934\u770b\u770b\u8bf4\u4e0d\u5b9a\u53c8\u6709\u4e0d\u4e00\u6837\u7684\u611f\u609f\uff01<\/p>\n

Java \u4e2d\u51fd\u6570\u53c2\u6570\u4f20\u9012\u91c7\u7528\u6309\u503c\u4f20\u9012\u548c\u6309\u5f15\u7528\u4f20\u9012\u4e24\u79cd\u673a\u5236\u3002\u57fa\u672c\u7c7b\u578b\u548c\u4e0d\u53ef\u53d8\u5bf9\u8c61\u91c7\u7528\u6309\u503c\u4f20\u9012\uff0c\u4f20\u9012\u526f\u672c\u503c\uff1b\u53ef\u53d8\u5bf9\u8c61\u91c7\u7528\u6309\u5f15\u7528\u4f20\u9012\uff0c\u4f20\u9012\u5bf9\u5bf9\u8c61\u7684\u5f15\u7528\uff0c\u5bf9\u53c2\u6570\u7684\u4fee\u6539\u4f1a\u5f71\u54cd\u5b9e\u9645\u5bf9\u8c61\u3002<\/p>\n

<\/p>\n

Java \u51fd\u6570\u7684\u53c2\u6570\u4f20\u9012\u673a\u5236<\/h2>\n

\u5728 Java \u4e2d\uff0c\u51fd\u6570\u53c2\u6570\u7684\u4f20\u9012\u673a\u5236\u662f\u6309\u503c\u4f20\u9012\u3002\u8fd9\u610f\u5473\u7740\u5b9e\u9645\u53c2\u6570\u7684\u503c\u5728\u4f20\u9012\u7ed9\u51fd\u6570\u65f6\u4f1a\u88ab\u590d\u5236\u5230\u5f62\u5f0f\u53c2\u6570\u3002\u5bf9\u5f62\u5f0f\u53c2\u6570\u7684\u4efb\u4f55\u4fee\u6539\u90fd\u4e0d\u4f1a\u5f71\u54cd\u5b9e\u9645\u53c2\u6570\u3002<\/p>\n

\u53c2\u6570\u4f20\u9012\u7c7b\u578b<\/h3>\n

Java \u4f7f\u7528\u4ee5\u4e0b\u4e24\u79cd\u7c7b\u578b\u7684\u53c2\u6570\u4f20\u9012\uff1a<\/p>\n

    \n
  • \u6309\u503c\u4f20\u9012\uff1a<\/strong> \u57fa\u672c\u7c7b\u578b\uff08int\u3001double\u3001char \u7b49\uff09\u548c\u4e0d\u53ef\u53d8\u5bf9\u8c61\uff08String\u3001Integer \u7b49\uff09\u662f\u6309\u503c\u4f20\u9012\u7684\u3002<\/li>\n
  • \u6309\u5f15\u7528\u4f20\u9012\uff1a<\/strong> \u53ef\u53d8\u5bf9\u8c61\uff08ArrayList\u3001HashMap \u7b49\uff09\u662f\u6309\u5f15\u7528\u4f20\u9012\u7684\u3002<\/li>\n<\/ul>\n

    \u5b9e\u6218\u6848\u4f8b\uff1a\u6309\u503c\u4f20\u9012<\/h3>\n
    public class PassByValue {\n\n    public static void main(String[] args) {\n        int x = 10;\n        changeValue(x); \/\/ \u4f20\u9012\u526f\u672c\u503c\n        System.out.println(\"x \u5728 main() \u65b9\u6cd5\u4e2d\u4e3a: \" + x); \/\/ \u8f93\u51fa 10\uff0c\u539f\u59cb\u503c\u4fdd\u6301\u4e0d\u53d8\n    }\n\n    public static void changeValue(int y) {\n        y = 20; \/\/ \u4fee\u6539\u526f\u672c\u503c\n    }\n}<\/pre>\n
    \u8f93\u51fa\uff1a<\/p>\n
    x \u5728 main() \u65b9\u6cd5\u4e2d\u4e3a: 10<\/pre>\n
    \u5b9e\u6218\u6848\u4f8b\uff1a\u6309\u5f15\u7528\u4f20\u9012<\/h3>\n
    public class PassByReference {\n\n    public static void main(String[] args) {\n        ArrayList<Integer> list = new ArrayList<>();\n        list.add(10);\n\n        changeList(list); \/\/ \u4f20\u9012\u5bf9\u5bf9\u8c61\u7684\u5f15\u7528\n        System.out.println(\"list \u5728 main() \u65b9\u6cd5\u4e2d\u4e3a: \" + list); \/\/ \u8f93\u51fa [10, 20]\uff0c\u539f\u59cb\u5bf9\u8c61\u88ab\u4fee\u6539\n    }\n\n    public static void changeList(ArrayList<Integer> list) {\n        list.add(20); \/\/ \u4fee\u6539\u5b9e\u9645\u5bf9\u8c61\n    }\n}<\/pre>\n
    \u8f93\u51fa\uff1a<\/p>\n
    list \u5728 main() \u65b9\u6cd5\u4e2d\u4e3a: [10, 20]<\/pre>\n
    \u4eca\u5929\u5173\u4e8e\u300aJava \u51fd\u6570\u7684\u53c2\u6570\u4f20\u9012\u673a\u5236\u662f\u4ec0\u4e48\uff1f\u300b\u7684\u5185\u5bb9\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u7591\u95ee\u6216\u8005\u5efa\u8bae\uff0c\u53ef\u4ee5\u5728\u516c\u4f17\u53f7\u4e0b\u591a\u591a\u56de\u590d\u4ea4\u6d41\uff1b\u6587\u4e2d\u82e5\u6709\u4e0d\u6b63\u4e4b\u5904\uff0c\u4e5f\u5e0c\u671b\u56de\u590d\u7559\u8a00\u4ee5\u544a\u77e5\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    Java \u51fd\u6570\u7684\u53c2\u6570\u4f20\u9012\u673a\u5236\u662f\u4ec0...<\/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-202785","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202785","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=202785"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202785\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202785"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202785"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202785"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}