{"id":656,"date":"2015-05-15T15:37:46","date_gmt":"2015-05-15T07:37:46","guid":{"rendered":"https:\/\/ai.zhousir.top\/?p=656"},"modified":"2015-05-15T15:37:46","modified_gmt":"2015-05-15T07:37:46","slug":"java%e4%b8%ad%e5%8f%82%e6%95%b0%e4%bc%a0%e9%80%92%e6%96%b9%e5%bc%8f%e6%8c%89%e5%80%bc%e4%bc%a0%e9%80%92%e8%bf%98%e6%98%af%e5%bc%95%e7%94%a8%e4%bc%a0%e9%80%92","status":"publish","type":"post","link":"https:\/\/ai.zhousir.top\/?p=656","title":{"rendered":"Java\u4e2d\u53c2\u6570\u4f20\u9012\u65b9\u5f0f(\u6309\u503c\u4f20\u9012\u8fd8\u662f\u5f15\u7528\u4f20\u9012)"},"content":{"rendered":"

\u5148\u6765\u770b\u4e00\u4e2a\u4f5c\u4e3a\u7a0b\u5e8f\u5458\u90fd\u719f\u6089\u7684\u503c\u4f20\u9012\u7684\u4f8b\u5b50\uff1a
\n<\/p>\n

[java]… …
\n\/\/\u5b9a\u4e49\u4e86\u4e00\u4e2a\u6539\u53d8\u53c2\u6570\u503c\u7684\u51fd\u6570
\npublic static void changeValue(int x) {
\n x = x *2;
\n}
\n… …
\n\/\/\u8c03\u7528\u8be5\u51fd\u6570
\nint num = 5;
\nSystem.out.println(num);
\nchangeValue(num);
\nSystem.out.println(num);
\n… …[\/java]<\/p>\n

\u7b54\u6848\u663e\u800c\u6613\u89c1\uff0c\u8c03\u7528\u51fd\u6570changeValue()\u524d\u540enum\u7684\u503c\u90fd\u6ca1\u6709\u6539\u53d8\u3002<\/p>\n

\u7531\u6b64\u505a\u4e00\u4e2a\u5f15\u5b50\uff0c\u6211\u7528\u56fe\u8868\u63cf\u7ed8\u4e00\u4e2a\u503c\u4f20\u9012\u7684\u8fc7\u7a0b\uff1a
\n\"fe0d1504-e8e6-3e01-a141-6987030fdeed\"<\/a><\/p>\n

num\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9changeValue()\u65b9\u6cd5\u65f6\uff0c\u662f\u5c06\u5185\u5b58\u7a7a\u95f4\u4e2dnum\u6240\u6307\u5411\u7684\u90a3\u4e2a\u5b58\u50a8\u5355\u5143\u4e2d\u5b58\u653e\u7684\u503c\uff0c\u5373”5″,\u4f20\u9001\u7ed9\u4e86changeValue()\u65b9\u6cd5\u4e2d\u7684x\u53d8\u91cf\uff0c\u800c\u8fd9\u4e2ax\u53d8\u91cf\u4e5f\u5728\u5185\u5b58\u7a7a\u95f4\u4e2d\u5206\u914d\u4e86\u4e00\u4e2a\u5b58\u50a8\u5355\u5143\uff0c\u8fd9\u4e2a\u65f6\u5019\uff0c\u5c31\u628anum\u7684\u503c5\u4f20\u9001\u7ed9\u4e86\u8fd9\u4e2a\u5b58\u50a8\u5355\u5143\u4e2d\u3002\u6b64\u540e\uff0c\u5728changeValue()\u65b9\u6cd5\u4e2d\u5bf9x\u7684\u4e00\u5207\u64cd\u4f5c\u90fd\u662f\u9488\u5bf9x\u6240\u6307\u5411\u7684\u8fd9\u4e2a\u5b58\u50a8\u5355\u5143\uff0c\u4e0enum\u6240\u6307\u5411\u7684\u90a3\u4e2a\u5b58\u50a8\u5355\u5143\u6ca1\u6709\u5173\u7cfb\u4e86\uff01
\n\u81ea\u7136\uff0c\u5728\u51fd\u6570\u8c03\u7528\u4e4b\u540e\uff0cnum\u6240\u6307\u5411\u7684\u5b58\u50a8\u5355\u5143\u7684\u503c\u8fd8\u662f\u6ca1\u6709\u53d1\u751f\u53d8\u5316\uff0c\u8fd9\u5c31\u662f\u6240\u8c13\u7684\u201c\u503c\u4f20\u9012\u201d\uff01\u503c\u4f20\u9012\u7684\u7cbe\u9ad3\u662f\uff1a\u4f20\u9012\u7684\u662f\u5b58\u50a8\u5355\u5143\u4e2d\u7684\u5185\u5bb9\uff0c\u800c\u975e\u5730\u5740\u6216\u8005\u5f15\u7528\uff01<\/p>\n

\u63a5\u4e0b\u6765\uff0c\u5c31\u6765\u770bjava\u4e2d\u7684\u5bf9\u8c61\u53c2\u6570\u662f\u600e\u4e48\u4f20\u9012\u7684\uff1a
\n\u540c\u6837\uff0c\u5148\u7ed9\u51fa\u4e00\u6bb5\u4ee3\u7801\uff1a<\/p>\n

[java]… …
\nclass person {
\npublic static String name = "Jack";
\n … …
\n}
\n… …
\n\/\/\u5b9a\u4e49\u4e00\u4e2a\u6539\u53d8\u5bf9\u8c61\u5c5e\u6027\u7684\u65b9\u6cd5
\npublic static void changeName(Person p) {
\n p.name = "Rose";
\n}
\n… …
\npublic static void main(String[] args) {
\n \/\/\u5b9a\u4e49\u4e00\u4e2aPerson\u5bf9\u8c61\uff0cperson\u662f\u8fd9\u4e2a\u5bf9\u8c61\u7684\u5f15\u7528
\n Person person = new Person();
\n \/\/\u5148\u663e\u793a\u8fd9\u4e2a\u5bf9\u8c61\u7684name\u5c5e\u6027
\n System.out.println(person.name);
\n \/\/\u8c03\u7528changeName(Person p)\u65b9\u6cd5
\n changeName(person);
\n \/\/\u518d\u663e\u793a\u8fd9\u4e2a\u5bf9\u8c61\u7684name\u5c5e\u6027\uff0c\u770b\u662f\u5426\u53d1\u751f\u4e86\u53d8\u5316
\n System.out.println(person.name);
\n}[\/java]<\/p>\n

\u7b54\u6848\u5e94\u8be5\u5927\u5bb6\u90fd\u5fc3\u77e5\u809a\u660e\uff1a
\n\u7b2c\u4e00\u6b21\u663e\u793a\uff1a\u201cJack\u201d
\n\u7b2c\u4e8c\u6b21\u663e\u793a\uff1a\u201cRose\u201d<\/p>\n

\u65b9\u6cd5\u7528\u4e86\u4e00\u4e2a\u5bf9\u8c61\u53c2\u6570\uff0c\u8be5\u5bf9\u8c61\u5185\u90e8\u7684\u5185\u5bb9\u5c31\u53ef\u4ee5\u6539\u53d8\uff0c\u6211\u4e4b\u524d\u4e00\u76f4\u8ba4\u4e3a\u5e94\u8be5\u662f\u8be5\u5bf9\u8c61\u590d\u5236\u4e86\u4e00\u4e2a\u5f15\u7528\u526f\u672c\u7ed9\u8c03\u7528\u51fd\u6570\u7684\u53c2\u6570\uff0c\u4f7f\u5f97\u8be5\u65b9\u6cd5\u53ef\u4ee5\u5bf9\u8fd9\u4e2a\u5bf9\u8c61\u8fdb\u884c\u64cd\u4f5c\uff0c\u5176\u5b9e\u662f\u9519\u4e86\uff01
\nhttp:\/\/www.cnblogs.com\/clara\/archive\/2011\/09\/17\/2179493.html \u5199\u9053
\nJava \u7f16\u7a0b\u8bed\u8a00\u53ea\u6709\u503c\u4f20\u9012\u53c2\u6570\u3002\u5f53\u4e00\u4e2a\u5bf9\u8c61\u5b9e\u4f8b\u4f5c\u4e3a\u4e00\u4e2a\u53c2\u6570\u88ab\u4f20\u9012\u5230\u65b9\u6cd5\u4e2d\u65f6\uff0c\u53c2\u6570\u7684\u503c\u5c31\u662f\u8be5\u5bf9\u8c61\u7684\u5f15\u7528\u4e00\u4e2a\u526f\u672c\u3002\u6307\u5411\u540c\u4e00\u4e2a\u5bf9\u8c61,\u5bf9\u8c61\u7684\u5185\u5bb9\u53ef\u4ee5\u5728\u88ab\u8c03\u7528\u7684\u65b9\u6cd5\u4e2d\u6539\u53d8\uff0c\u4f46\u5bf9\u8c61\u7684\u5f15\u7528(\u4e0d\u662f\u5f15\u7528\u7684\u526f\u672c)\u662f\u6c38\u8fdc\u4e0d\u4f1a\u6539\u53d8\u7684\u3002 <\/p>\n

\u4e3a\u4ec0\u4e48\u8fd9\u91cc\u662f\u201c\u503c\u4f20\u9012\u201d\uff0c\u800c\u4e0d\u662f\u201c\u5f15\u7528\u4f20\u9012\u201d\uff1f
\n\u6211\u8fd8\u662f\u7528\u56fe\u8868\u63cf\u7ed8\u6bd4\u8f83\u80fd\u89e3\u91ca\u6e05\u695a\uff1a
\n\"a9f38c27-261d-3f39-8384-16025b2b9338\"<\/a><\/p>\n

\u4e3b\u51fd\u6570\u4e2dnew \u4e86\u4e00\u4e2a\u5bf9\u8c61Person\uff0c\u5b9e\u9645\u5206\u914d\u4e86\u4e24\u4e2a\u5bf9\u8c61\uff1a\u65b0\u521b\u5efa\u7684Person\u7c7b\u7684\u5b9e\u4f53\u5bf9\u8c61\uff0c\u548c\u6307\u5411\u8be5\u5bf9\u8c61\u7684\u5f15\u7528\u53d8\u91cfperson\u3002
\n\u3010\u6ce8\u610f\uff1a\u5728java\u4e2d\uff0c\u65b0\u521b\u5efa\u7684\u5b9e\u4f53\u5bf9\u8c61\u5728\u5806\u5185\u5b58\u4e2d\u5f00\u8f9f\u7a7a\u95f4\uff0c\u800c\u5f15\u7528\u53d8\u91cf\u5728\u6808\u5185\u5b58\u4e2d\u5f00\u8f9f\u7a7a\u95f4\u3011
\n\u6b63\u5982\u5982\u4e0a\u56fe\u6240\u793a\uff0c\u5de6\u4fa7\u662f\u5806\u7a7a\u95f4\uff0c\u7528\u6765\u5206\u914d\u5185\u5b58\u7ed9\u65b0\u521b\u5efa\u7684\u5b9e\u4f53\u5bf9\u8c61\uff0c\u7ea2\u8272\u6846\u662f\u65b0\u5efa\u7684Person\u7c7b\u7684\u5b9e\u4f53\u5bf9\u8c61\uff0c000012\u662f\u8be5\u5b9e\u4f53\u5bf9\u8c61\u7684\u8d77\u59cb\u5730\u5740\uff1b\u800c\u53f3\u4fa7\u662f\u6808\u7a7a\u95f4\uff0c\u7528\u6765\u7ed9\u5f15\u7528\u53d8\u91cf\u548c\u4e00\u4e9b\u4e34\u65f6\u53d8\u91cf\u5206\u914d\u5185\u5b58\uff0c\u65b0\u5b9e\u4f53\u5bf9\u8c61\u7684\u5f15\u7528person\u5c31\u5728\u5176\u4e2d\uff0c\u53ef\u4ee5\u770b\u5230\u5b83\u7684\u5b58\u50a8\u5355\u5143\u7684\u5185\u5bb9\u662f000012\uff0c\u8bb0\u5f55\u7684\u6b63\u662f\u65b0\u5efaPerson\u7c7b\u5b9e\u4f53\u5bf9\u8c61\u7684\u8d77\u59cb\u5730\u5740\uff0c\u4e5f\u5c31\u662f\u8bf4\u5b83\u6307\u5411\u8be5\u5b9e\u4f53\u5bf9\u8c61\u3002
\n\u8fd9\u65f6\u5019\uff0c\u597d\u620f\u4e0a\u53f0\u4e86\uff1a
\n\u8c03\u7528\u4e86changeName()\u65b9\u6cd5\uff0cperson\u4f5c\u4e3a\u5bf9\u8c61\u53c2\u6570\u4f20\u5165\u8be5\u65b9\u6cd5\uff0c\u4f46\u662f\u5927\u5bb6\u7279\u522b\u6ce8\u610f\uff0c\u5b83\u4f20\u5165\u7684\u662f\u4ec0\u4e48\uff01\uff01\uff01person\u5f15\u7528\u53d8\u91cf\u5c06\u81ea\u5df1\u7684\u5b58\u50a8\u5355\u5143\u7684\u5185\u5bb9\u4f20\u7ed9\u4e86changeName()\u65b9\u6cd5\u7684p\u53d8\u91cf\uff01\u4e5f\u5c31\u662f\u5c06\u5b9e\u4f53\u5bf9\u8c61\u7684\u5730\u5740\u4f20\u7ed9\u4e86p\u53d8\u91cf\uff0c\u4ece\u6b64\uff0c\u5728changeName()\u65b9\u6cd5\u4e2d\u5bf9p\u7684\u4e00\u5207\u64cd\u4f5c\u90fd\u662f\u9488\u5bf9p\u6240\u6307\u5411\u7684\u8fd9\u4e2a\u5b58\u50a8\u5355\u5143\uff0c\u4e0eperson\u5f15\u7528\u53d8\u91cf\u6240\u6307\u5411\u7684\u90a3\u4e2a\u5b58\u50a8\u5355\u5143\u518d\u6ca1\u6709\u5173\u7cfb\u4e86\uff01
\n\u56de\u987e\u4e00\u4e0b\u4e0a\u9762\u7684\u4e00\u4e2a\u503c\u4f20\u9012\u7684\u4f8b\u5b50\uff0c\u503c\u4f20\u9012\uff0c\u5c31\u662f\u5c06\u5b58\u50a8\u5355\u5143\u4e2d\u7684\u5185\u5bb9\u4f20\u7ed9\u8c03\u7528\u51fd\u6570\u4e2d\u7684\u90a3\u4e2a\u53c2\u6570\uff0c\u8fd9\u91cc\u662f\u4e0d\u662f\u5f02\u66f2\u540c\u5de5\uff0c\u662f\u6240\u8c13\u201c\u503c\u4f20\u9012\u201d\uff0c\u800c\u975e\u201c\u5f15\u7528\u4f20\u9012\u201d\uff01\uff01\uff01<\/p>\n

\u90a3\u4e3a\u4ec0\u4e48\u5bf9\u8c61\u5185\u90e8\u80fd\u591f\u53d1\u751f\u53d8\u5316\u5462\uff1f
\n\u90a3\u662f\u56e0\u4e3a\uff1ap\u6240\u6307\u5411\u7684\u90a3\u4e2a\u5b58\u50a8\u5355\u5143\u4e2d\u7684\u5185\u5bb9\u662f\u5b9e\u4f53\u5bf9\u8c61\u7684\u5730\u5740\uff0c\u4f7f\u5f97p\u4e5f\u6307\u5411\u4e86\u8be5\u5b9e\u4f53\u5bf9\u8c61\uff0c\u6240\u4ee5\u624d\u80fd\u6539\u53d8\u5bf9\u8c61\u5185\u90e8\u7684\u5c5e\u6027\uff01
\n\u8fd9\u4e5f\u662f\u6211\u4eec\u5927\u591a\u6570\u4eba\u4f1a\u8bef\u4ee5\u4e3a\u662f\u201c\u5f15\u7528\u4f20\u9012\u201d\u7684\u7ec8\u6781\u539f\u56e0\uff01\uff01\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"

\u5148\u6765\u770b\u4e00\u4e2a\u4f5c\u4e3a\u7a0b\u5e8f\u5458\u90fd\u719f\u6089\u7684\u503c\u4f20\u9012\u7684\u4f8b\u5b50\uff1a<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[46],"tags":[],"_links":{"self":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/656"}],"collection":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=656"}],"version-history":[{"count":1,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/656\/revisions"}],"predecessor-version":[{"id":659,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/656\/revisions\/659"}],"wp:attachment":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=656"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=656"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=656"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}