{"id":934,"date":"2018-08-01T23:29:55","date_gmt":"2018-08-01T15:29:55","guid":{"rendered":"https:\/\/199604.com\/?p=934"},"modified":"2018-08-01T23:29:55","modified_gmt":"2018-08-01T15:29:55","slug":"%e5%ae%9a%e4%b9%89java%e7%9a%84%e6%96%b9%e6%b3%95-%e5%9b%9e%e9%a1%be","status":"publish","type":"post","link":"https:\/\/199604.com\/934","title":{"rendered":"\u5b9a\u4e49Java\u7684\u65b9\u6cd5-\u56de\u987e"},"content":{"rendered":"<p>\u5982\u4f55\u5b9a\u4e49\u81ea\u5df1\u521b\u5efa\u7684Java\u65b9\u6cd5\uff0c\u8fd9\u4e2a\u5e94\u8be5\u662f\u57fa\u7840\u7684\u57fa\u7840\u3002\u4f46\u662f\u8fd8\u662f\u590d\u4e60\u4e00\u4e0b\u5427\u3002<\/p>\n<p>\u6240\u8c13\u65b9\u6cd5\uff0c\u5c31\u662f\u7528\u6765\u89e3\u51b3\u4e00\u7c7b\u95ee\u9898\u7684\u4ee3\u7801\u7684\uff0c\u662f\u4e00\u4e2a\u529f\u80fd\u6a21\u5757\u3002<\/p>\n<p>\u4e00\u822c\u60c5\u51b5\u4e0b\uff0c\u5b9a\u4e49\u4e00\u4e2a\u65b9\u6cd5\u7684\u8bed\u6cd5\u662f\uff1a<\/p>\n<pre class=\"lang:default decode:true\">\u8bbf\u95ee\u4fee\u9970\u7b26 \u8fd4\u56de\u7c7b\u578b \u65b9\u6cd5\u540d\u79f0([\u53c2\u6570\u7c7b\u578b \u53d8\u91cf, ......]) {\r\n    \u65b9\u6cd5\u4f53\u4ee3\u7801;\r\n    [return [\u8fd4\u56de\u503c];]\r\n}<\/pre>\n<p>\u5176\u4e2d\uff1a<\/p>\n<ul>\n<li>\u8bbf\u95ee\u4fee\u9970\u7b26\uff1a\u65b9\u6cd5\u5141\u8bb8\u88ab\u8bbf\u95ee\u7684\u6743\u9650\u8303\u56f4\uff0c \u53ef\u4ee5\u662f public\u3001protected\u3001private \u751a\u81f3\u53ef\u4ee5\u7701\u7565 \uff0c\u5176\u4e2d public \u8868\u793a\u8be5\u65b9\u6cd5\u53ef\u4ee5\u88ab\u5176\u4ed6\u4efb\u4f55\u4ee3\u7801\u8c03\u7528\uff0cprotected\u53ef\u540c\u4e00\u4e2a\u5305\u91cc\u7684\u5b50\u7c7b\u4e2d\u88ab\u8c03\u7528\uff0c\u800cprivate \u53ea\u80fd\u5728\u672c\u7c7b\u88ab\u8c03\u7528\u3002<\/li>\n<li>\u8fd4\u56de\u7c7b\u578b\uff1a\u65b9\u6cd5\u8fd4\u56de\u503c\u7684\u7c7b\u578b\uff0c\u5982\u679c\u65b9\u6cd5\u4e0d\u8fd4\u56de\u4efb\u4f55\u503c\uff0c\u5219\u8fd4\u56de\u503c\u7c7b\u578b\u6307\u5b9a\u4e3a void \uff1b\u5982\u679c\u65b9\u6cd5\u5177\u6709\u8fd4\u56de\u503c\uff0c\u5219\u9700\u8981\u6307\u5b9a\u8fd4\u56de\u503c\u7684\u7c7b\u578b\uff0c\u5e76\u4e14\u5728\u65b9\u6cd5\u4f53\u4e2d\u4f7f\u7528 return \u8bed\u53e5\u8fd4\u56de\u503c\u3002<\/li>\n<li>\u65b9\u6cd5\u540d\uff1a\u5b9a\u4e49\u7684\u65b9\u6cd5\u7684\u540d\u5b57\uff0c\u5fc5\u987b\u4f7f\u7528\u5408\u6cd5\u7684\u6807\u8bc6\u7b26\u3002<\/li>\n<li>\u53c2\u6570\uff1a\u4f20\u9012\u7ed9\u65b9\u6cd5\u7684\u53c2\u6570\u5217\u8868\uff0c\u53c2\u6570\u53ef\u4ee5\u6709\u591a\u4e2a\uff0c\u591a\u4e2a\u53c2\u6570\u95f4\u4ee5\u9017\u53f7\u9694\u5f00\uff0c\u6bcf\u4e2a\u53c2\u6570\u7531\u53c2\u6570\u7c7b\u578b\u548c\u53c2\u6570\u540d\u7ec4\u6210\uff0c\u4ee5\u7a7a\u683c\u9694\u5f00 \u3002<\/li>\n<\/ul>\n<p>\u6839\u636e\u65b9\u6cd5\u662f\u5426\u5e26\u53c2\u3001\u662f\u5426\u5e26\u8fd4\u56de\u503c\uff0c\u53ef\u5c06\u65b9\u6cd5\u5206\u4e3a\u56db\u7c7b\uff1a<\/p>\n<ul>\n<li>\u65e0\u53c2\u65e0\u8fd4\u56de\u503c\u65b9\u6cd5<\/li>\n<li>\u65e0\u53c2\u5e26\u8fd4\u56de\u503c\u65b9\u6cd5<\/li>\n<li>\u5e26\u53c2\u65e0\u8fd4\u56de\u503c\u65b9\u6cd5<\/li>\n<li>\u5e26\u53c2\u5e26\u8fd4\u56de\u503c\u65b9\u6cd5<\/li>\n<\/ul>\n<h2>\u8303\u4f8b\uff1a\u5b9a\u4e49\u4e00\u4e2a\u65e0\u8fd4\u56de\u503c\uff0c\u65e0\u53c2\u6570\u7684\u65b9\u6cd5<\/h2>\n<pre class=\"lang:default decode:true \">public class testDemo {\r\n\tpublic static void main(String[] args) {\r\n\t\ttestDemo demo = new testDemo();\r\n\t\tdemo.say();\r\n\t}\r\n\t\/\/\u5b9a\u4e49\u7684\u65b9\u6cd5\r\n\tpublic void say(){\r\n\t\tSystem.out.println(\"say.....\");\r\n\t}\r\n}<\/pre>\n<h2>\u8303\u4f8b\uff1a\u5b9a\u4e49\u4e00\u4e2a\u65e0\u8fd4\u56de\u503c\uff0c\u6709\u53c2\u6570\u7684\u65b9\u6cd5<\/h2>\n<pre class=\"lang:default decode:true \">public class testDemo {\r\n\tpublic static void main(String[] args) {\r\n\t\ttestDemo demo = new testDemo();\r\n\t\tdemo.say(\"say.....\");\r\n\t}\r\n\t\/\/\u5b9a\u4e49\u7684\u65b9\u6cd5\r\n\tpublic void say(String say){\r\n\t\tSystem.out.println(say);\r\n\t}\r\n}<\/pre>\n<h2>\u8303\u4f8b\uff1a\u5b9a\u4e49\u4e00\u4e2a\u6709\u8fd4\u56de\u503c\uff0c\u6709\u53c2\u6570\u7684\u65b9\u6cd5<\/h2>\n<pre class=\"lang:default decode:true \">public class testDemo {\r\n\tpublic static void main(String[] args) {\r\n\t\ttestDemo demo = new testDemo();\r\n\t\tString say = demo.say(\"say....\");\r\n\t\tSystem.out.println(say);\r\n\t}\r\n\t\/\/\u5b9a\u4e49\u7684\u65b9\u6cd5\r\n\tpublic String say(String say){\r\n\t\treturn say;\r\n\t}\r\n}<\/pre>\n<p>\u6ce8\u610f\uff0c\u4e0d\u5bb9\u5ffd\u89c6\u7684\u201c\u5c0f\u9677\u9631\u201d\uff1a<\/p>\n<p>1.\u5f53\u65b9\u6cd5\u7684\u8fd4\u56de\u7c7b\u578b\u4e3a void \uff0c\u5219\u65b9\u6cd5\u4e2d\u4e0d\u80fd\u4f7f\u7528 return \u8fd4\u56de\u503c\uff0c\u4e0d\u7136\u4f1a\u5f15\u8d77\u62a5\u9519\u63d0\u793a\u3002<\/p>\n<p>2.\u65b9\u6cd5\u7684\u8fd4\u56de\u503c\u6700\u591a\u53ea\u80fd\u6709\u4e00\u4e2a\uff0c\u4e0d\u80fd\u8fd4\u56de\u591a\u4e2a\u503c\uff0c\u4e0d\u7136\u4f1a\u5f15\u8d77\u62a5\u9519\u63d0\u793a\u3002<\/p>\n<p>3. \u65b9\u6cd5\u8fd4\u56de\u503c\u7684\u7c7b\u578b\u5fc5\u987b\u517c\u5bb9\uff0c\u4f8b\u5982\uff0c\u5982\u679c\u8fd4\u56de\u503c\u7c7b\u578b\u4e3a int \uff0c\u5219\u4e0d\u80fd\u8fd4\u56de String \u578b\u503c\u3002<\/p>\n<p>4.\u8c03\u7528\u5e26\u53c2\u65b9\u6cd5\u65f6\uff0c\u5fc5\u987b\u4fdd\u8bc1\u5b9e\u53c2\u7684\u6570\u91cf\u3001\u7c7b\u578b\u3001\u987a\u5e8f\u4e0e\u5f62\u53c2\u4e00\u4e00\u5bf9\u5e94\u3002<\/p>\n<p>5.\u65b9\u6cd5\u7684\u53c2\u6570\u53ef\u4ee5\u662f\u57fa\u672c\u6570\u636e\u7c7b\u578b\uff0c\u5982 int\u3001double \u7b49\uff0c\u4e5f\u53ef\u4ee5\u662f\u5f15\u7528\u6570\u636e\u7c7b\u578b\uff0c\u5982 String\u3001\u6570\u7ec4\u7b49\u3002<\/p>\n<p>6.\u5f53\u65b9\u6cd5\u53c2\u6570\u6709\u591a\u4e2a\u65f6\uff0c\u591a\u4e2a\u53c2\u6570\u95f4\u4ee5\u9017\u53f7\u5206\u9694\u3002<\/p>\n<h2>Java \u4e2d\u65b9\u6cd5\u7684\u91cd\u8f7d<\/h2>\n<p>\u4ec0\u4e48\u662f\u65b9\u6cd5\u7684\u91cd\u8f7d\uff1f<\/p>\n<p>\u5982\u679c\u540c\u4e00\u4e2a\u7c7b\u4e2d\u5305\u542b\u4e86\u4e24\u4e2a\u6216\u4e24\u4e2a\u4ee5\u4e0a\u65b9\u6cd5\u540d\u76f8\u540c\u3001\u65b9\u6cd5\u53c2\u6570\u7684\u4e2a\u6570\u3001\u987a\u5e8f\u6216\u7c7b\u578b\u4e0d\u540c\u7684\u65b9\u6cd5\uff0c\u5219\u79f0\u4e3a\u65b9\u6cd5\u7684\u91cd\u8f7d\uff0c\u4e5f\u53ef\u79f0\u8be5\u65b9\u6cd5\u88ab\u91cd\u8f7d\u4e86\u3002<\/p>\n<pre class=\"lang:default decode:true \">public class testDemo {\r\n\tpublic static void main(String[] args) {\r\n\t\t\r\n\t}\r\n\t\/\/\u65e0\u53c2\u6570\r\n\tpublic void say(){\r\n\t\tSystem.out.println(\"test\");\r\n\t}\r\n\t\/\/\u4e00\u4e2a\u53c2\u6570\r\n\tpublic void say(String say){\r\n\t\tSystem.out.println(say);\r\n\t}\r\n\t\/\/\u4e24\u4e2a\u53c2\u6570\r\n\tpublic void say(String say,int age){\r\n\t\tSystem.out.println(say);\r\n\t}\r\n\t\/\/\u53c2\u6570\u4f4d\u7f6e\u4e0d\u4e00\u6837\r\n\tpublic void say(int age,String say){\r\n\t\tSystem.out.println(say);\r\n\t}\r\n}<\/pre>\n<h2>\u5224\u65ad\u65b9\u6cd5\u91cd\u8f7d\u7684\u4f9d\u636e\uff1a<\/h2>\n<ul>\n<li>\u5fc5\u987b\u662f\u5728\u540c\u4e00\u4e2a\u7c7b\u4e2d<\/li>\n<li>\u65b9\u6cd5\u540d\u76f8\u540c<\/li>\n<li>\u65b9\u6cd5\u53c2\u6570\u7684\u4e2a\u6570\u3001\u987a\u5e8f\u6216\u7c7b\u578b\u4e0d\u540c<\/li>\n<li>\u4e0e\u65b9\u6cd5\u7684\u4fee\u9970\u7b26\u6216\u8fd4\u56de\u503c\u6ca1\u6709\u5173\u7cfb<\/li>\n<\/ul>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/199604.com\/wp-content\/uploads\/2018\/08\/20180801232922.jpg'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"497\" height=\"596\" class=\"alignnone size-full wp-image-935\" data-original=\"https:\/\/199604.com\/wp-content\/uploads\/2018\/08\/20180801232922.jpg\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\"  sizes=\"auto, (max-width: 497px) 100vw, 497px\" \/><\/div><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u5b9a\u4e49\u81ea\u5df1\u521b\u5efa\u7684Java\u65b9\u6cd5\uff0c\u8fd9\u4e2a\u5e94\u8be5\u662f\u57fa\u7840\u7684\u57fa\u7840\u3002\u4f46\u662f\u8fd8\u662f\u590d\u4e60\u4e00\u4e0b\u5427\u3002 \u6240\u8c13\u65b9\u6cd5\uff0c\u5c31\u662f\u7528\u6765\u89e3\u51b3\u4e00\u7c7b\u95ee\u9898\u7684\u4ee3 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[129],"class_list":["post-934","post","type-post","status-publish","format-standard","hentry","category-2","tag-java"],"_links":{"self":[{"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/posts\/934","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/comments?post=934"}],"version-history":[{"count":1,"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/posts\/934\/revisions"}],"predecessor-version":[{"id":936,"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/posts\/934\/revisions\/936"}],"wp:attachment":[{"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/media?parent=934"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/categories?post=934"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/tags?post=934"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}