{"id":1137,"date":"2021-01-19T23:36:33","date_gmt":"2021-01-19T15:36:33","guid":{"rendered":"http:\/\/admin.lastdream.net\/?p=1137"},"modified":"2021-01-19T23:36:33","modified_gmt":"2021-01-19T15:36:33","slug":"javazhifengzhuangjichengduotaizhuanzai","status":"publish","type":"post","link":"https:\/\/admin.vsingers.com\/index.php\/2021\/01\/19\/javazhifengzhuangjichengduotaizhuanzai\/","title":{"rendered":"Java\u4e4b\u5c01\u88c5\uff0c\u7ee7\u627f\uff0c\u591a\u6001\uff08\u8f6c\u8f7d\uff09"},"content":{"rendered":"<h1 class=\"postTitle\"><a id=\"cb_post_title_url\" class=\"postTitle2 vertical-middle\" href=\"https:\/\/www.cnblogs.com\/fenjyang\/p\/11462278.html\">Java\u4e4b\u5c01\u88c5\uff0c\u7ee7\u627f\uff0c\u591a\u6001<\/a><\/h1>\n<div class=\"clear\"><\/div>\n<div>https:\/\/www.cnblogs.com\/fenjyang\/p\/11462278.html<\/div>\n<div class=\"postBody\">\n<div id=\"cnblogs_post_body\" class=\"blogpost-body cnblogs-markdown\">\n<h1 id=\"\u4e00\uff0c\u524d\u8a00\">\u4e00\uff0c\u524d\u8a00<\/h1>\n<p>\u200b \u4eca\u5929\u603b\u7ed3\u4e00\u4e0b\u5173\u4e8eJava\u7684\u4e09\u5927\u7279\u6027\uff0c\u5c01\u88c5\uff0c\u7ee7\u627f\uff0c\u591a\u6001\u3002\u5176\u5b9e\u5173\u4e8e\u4e09\u5927\u7279\u6027\u5bf9\u4e8e\u4ece\u4e8b\u7f16\u7a0b\u4eba\u5458\u6765\u8bf4\u90fd\u662f\u57fa\u672c\u7684\u4e86\uff0c\u6bd5\u7adf\u53ea\u8981\u63a5\u89e6Java\u8fd9\u4e9b\u90fd\u662f\u5148\u8981\u8ba4\u8bc6\u7684\uff0c\u63a5\u4e0b\u6765\u5c31\u7cfb\u7edf\u603b\u7ed3\u4e00\u4e0b\u3002<\/p>\n<h1 id=\"\u4e8c\uff0c\u5c01\u88c5\">\u4e8c\uff0c\u5c01\u88c5<\/h1>\n<p>\u200b \u5148\u6765\u8bf4\u8bf4\u7279\u6027\u4e4b\u4e00\uff1a\u5c01\u88c5<\/p>\n<h3 id=\"21\uff0c\u4ec0\u4e48\u662f\u5c01\u88c5\">2.1\uff0c\u4ec0\u4e48\u662f\u5c01\u88c5<\/h3>\n<p>\u200b \u5c01\u88c5\uff08Encapsulation\uff09\u662f\u9762\u5411\u5bf9\u8c61\u65b9\u6cd5\u7684\u91cd\u8981\u539f\u5219\uff0c\u5c31\u662f\u628a\u5bf9\u8c61\u7684\u5c5e\u6027\u548c\u64cd\u4f5c\uff08\u6216\u670d\u52a1\uff09\u7ed3\u5408\u4e3a\u4e00\u4e2a\u72ec\u7acb\u7684\u6574\u4f53\uff0c\u5e76\u5c3d\u53ef\u80fd\u9690\u85cf\u5bf9\u8c61\u7684\u5185\u90e8\u5b9e\u73b0\u7ec6\u8282\u3002<\/p>\n<ul>\n<li>\u5c06\u7c7b\u7684\u67d0\u4e9b\u4fe1\u606f\u9690\u85cf\u5728\u7c7b\u7684\u5185\u90e8\uff0c\u4e0d\u5141\u8bb8\u5916\u90e8\u7a0b\u5e8f\u8fdb\u884c\u76f4\u63a5\u7684\u8bbf\u95ee\u8c03\u7528\u3002<\/li>\n<li>\u901a\u8fc7\u8be5\u7c7b\u63d0\u4f9b\u7684\u65b9\u6cd5\u6765\u5b9e\u73b0\u5bf9\u9690\u85cf\u4fe1\u606f\u7684\u64cd\u4f5c\u548c\u8bbf\u95ee\u3002<\/li>\n<li>\u9690\u85cf\u5bf9\u8c61\u7684\u4fe1\u606f\u3002<\/li>\n<li>\u7559\u51fa\u8bbf\u95ee\u7684\u5bf9\u5916\u63a5\u53e3\u3002<\/li>\n<\/ul>\n<p>\u200b \u4e3e\u4e2a\u6bd4\u8f83\u901a\u4fd7\u7684\u4f8b\u5b50\uff0c\u6bd4\u5982\u6211\u4eec\u7684USB\u63a5\u53e3\u3002\u5982\u679c\u6211\u4eec\u9700\u8981\u5916\u8bbe\u4e14\u53ea\u9700\u8981\u5c06\u8bbe\u5907\u63a5\u5165USB\u63a5\u53e3\u4e2d\uff0c\u800c\u5185\u90e8\u662f\u5982\u4f55\u5de5\u4f5c\u7684\uff0c\u5bf9\u4e8e\u4f7f\u7528\u8005\u6765\u8bf4\u5e76\u4e0d\u91cd\u8981\u3002\u800cUSB\u63a5\u53e3\u5c31\u662f\u5bf9\u5916\u63d0\u4f9b\u7684\u8bbf\u95ee\u63a5\u53e3\u3002<\/p>\n<p>\u200b \u8bf4\u4e86\u8fd9\u4e48\u591a\uff0c\u90a3\u4e3a\u4ec0\u4e48\u4f7f\u7528\u5c01\u88c5\uff1f<\/p>\n<h3 id=\"22\uff0c\u5c01\u88c5\u7684\u7279\u70b9\">2.2\uff0c\u5c01\u88c5\u7684\u7279\u70b9<\/h3>\n<ul>\n<li>\u5bf9\u6210\u5458\u53d8\u91cf\u5b9e\u884c\u66f4\u51c6\u786e\u7684\u63a7\u5236\u3002<\/li>\n<li>\u5c01\u88c5\u53ef\u4ee5\u9690\u85cf\u5185\u90e8\u7a0b\u5e8f\u5b9e\u73b0\u7684\u7ec6\u8282\u3002<\/li>\n<li>\u826f\u597d\u7684\u5c01\u88c5\u80fd\u591f\u51cf\u5c11\u4ee3\u7801\u4e4b\u95f4\u7684\u8026\u5408\u5ea6\u3002<\/li>\n<li>\u5916\u90e8\u6210\u5458\u65e0\u6cd5\u4fee\u6539\u5df2\u5c01\u88c5\u597d\u7684\u7a0b\u5e8f\u4ee3\u7801\u3002<\/li>\n<li>\u65b9\u4fbf\u6570\u636e\u68c0\u67e5\uff0c\u6709\u5229\u4e8e\u4fdd\u62a4\u5bf9\u8c61\u4fe1\u606f\u7684\u5b8c\u6574\u6027\uff0c\u540c\u65f6\u4e5f\u63d0\u9ad8\u7a0b\u5e8f\u7684\u5b89\u5168\u6027\u3002<\/li>\n<li>\u4fbf\u4e8e\u4fee\u6539\uff0c\u4f53\u9ad8\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027\u3002<\/li>\n<\/ul>\n<h3 id=\"23\uff0c\u5c01\u88c5\u7684\u4f7f\u7528\">2.3\uff0c\u5c01\u88c5\u7684\u4f7f\u7528<\/h3>\n<ul>\n<li>\u4f7f\u7528private\u4fee\u9970\u7b26\uff0c\u8868\u793a\u6700\u5c0f\u7684\u8bbf\u95ee\u6743\u9650\u3002<\/li>\n<li>\u5bf9\u6210\u5458\u53d8\u91cf\u7684\u8bbf\u95ee\uff0c\u7edf\u4e00\u63d0\u4f9bsetXXX\uff0cgetXXX\u65b9\u6cd5\u3002\u4e0b\u9762\u8bf7\u770b\u4e00\u4e2aStudent\u5b9e\u4f53\u5bf9\u8c61\u7c7b\uff1a\n<pre><code class=\"language-java hljs\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-class\"><span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title\">Student<\/span> <span class=\"hljs-keyword\">implements<\/span> <span class=\"hljs-title\">Serializable<\/span> <\/span>{\n    \n    <span class=\"hljs-keyword\">private<\/span> Long id;\n    <span class=\"hljs-keyword\">private<\/span> String name;\n    <span class=\"hljs-keyword\">private<\/span> Integer sex;\n\n    <span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> Long <span class=\"hljs-title\">getId<\/span><span class=\"hljs-params\">()<\/span> <\/span>{\n        <span class=\"hljs-keyword\">return<\/span> id;\n    }\n\n    <span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title\">setId<\/span><span class=\"hljs-params\">(Long id)<\/span> <\/span>{\n        <span class=\"hljs-keyword\">this<\/span>.id = id;\n    }\n\n    <span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> String <span class=\"hljs-title\">getName<\/span><span class=\"hljs-params\">()<\/span> <\/span>{\n        <span class=\"hljs-keyword\">return<\/span> name;\n    }\n\n    <span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title\">setName<\/span><span class=\"hljs-params\">(String name)<\/span> <\/span>{\n        <span class=\"hljs-keyword\">this<\/span>.name = name;\n    }\n\n    <span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> Integer <span class=\"hljs-title\">getSex<\/span><span class=\"hljs-params\">()<\/span> <\/span>{\n        <span class=\"hljs-keyword\">return<\/span> sex;\n    }\n\n    <span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title\">setSex<\/span><span class=\"hljs-params\">(Integer sex)<\/span> <\/span>{\n        <span class=\"hljs-keyword\">this<\/span>.sex = sex;\n    }\n}\n\n<\/code><\/pre>\n<p>\u5206\u6790\uff1a\u5bf9\u4e8e\u4e0a\u9762\u7684\u4e00\u4e2a\u5b9e\u4f53\u5bf9\u8c61\uff0c\u6211\u60f3\u5927\u5bb6\u90fd\u5df2\u7ecf\u5f88\u719f\u6089\u4e86\u3002\u5c06\u5bf9\u8c61\u4e2d\u7684\u6210\u5458\u53d8\u91cf\u8fdb\u884c\u79c1\u6709\u5316\uff0c\u5916\u90e8\u7a0b\u5e8f\u662f\u65e0\u6cd5\u8bbf\u95ee\u7684\u3002\u4f46\u662f\u6211\u4eec\u5bf9\u5916\u63d0\u4f9b\u4e86\u8bbf\u95ee\u7684\u65b9\u5f0f\uff0c\u5c31\u662fset\u548cget\u65b9\u6cd5\u3002<\/p>\n<p>\u200b \u800c\u5bf9\u4e8e\u8fd9\u6837\u4e00\u4e2a\u5b9e\u4f53\u5bf9\u8c61\uff0c\u5916\u90e8\u7a0b\u5e8f\u53ea\u6709\u8d4b\u503c\u548c\u83b7\u53d6\u503c\u7684\u6743\u9650\uff0c\u662f\u65e0\u6cd5\u5bf9\u5185\u90e8\u8fdb\u884c\u4fee\u6539\uff0c\u56e0\u6b64\u6211\u4eec\u8fd8\u53ef\u4ee5\u5728\u5185\u90e8\u8fdb\u884c\u4e00\u4e9b\u903b\u8f91\u4e0a\u7684\u5224\u65ad\u7b49\uff0c\u6765\u5b8c\u6210\u6211\u4eec\u4e1a\u52a1\u4e0a\u7684\u9700\u8981\u3002<\/p>\n<p>\u200b \u5230\u8fd9\u91cc\u5e94\u8be5\u5c31\u660e\u767d\u5c01\u88c5\u5bf9\u4e8e\u6211\u4eec\u7684\u7a0b\u5e8f\u662f\u591a\u4e48\u91cd\u8981\u3002\u4e0b\u9762\u518d\u6765\u8bf4\u8bf4\u7ee7\u627f\u7684\u90a3\u70b9\u4e8b\u3002<\/p>\n<h1 id=\"\u4e09\uff0c\u7ee7\u627f\">\u4e09\uff0c\u7ee7\u627f<\/h1>\n<h3 id=\"31\uff0c\u4ec0\u4e48\u662f\u7ee7\u627f\">3.1\uff0c\u4ec0\u4e48\u662f\u7ee7\u627f<\/h3>\n<p>\u200b \u7ee7\u627f\u5c31\u662f\u5b50\u7c7b\u7ee7\u627f\u7236\u7c7b\u7684\u7279\u5f81\u548c\u884c\u4e3a\uff0c\u4f7f\u5f97\u5b50\u7c7b\u5bf9\u8c61\uff08\u5b9e\u4f8b\uff09\u5177\u6709\u7236\u7c7b\u7684\u5b9e\u4f8b\u57df\u548c\u65b9\u6cd5\uff0c\u6216\u5b50\u7c7b\u4ece\u7236\u7c7b\u7ee7\u627f\u65b9\u6cd5\uff0c\u4f7f\u5f97\u5b50\u7c7b\u5177\u6709\u7236\u7c7b\u76f8\u540c\u7684\u884c\u4e3a\u3002\u5f53\u7136\uff0c\u5982\u679c\u5728\u7236\u7c7b\u4e2d\u62e5\u6709\u79c1\u6709\u5c5e\u6027(private\u4fee\u9970)\uff0c\u5219\u5b50\u7c7b\u662f\u4e0d\u80fd\u88ab\u7ee7\u627f\u7684\u3002<\/p>\n<h3 id=\"32\uff0c\u7ee7\u627f\u7684\u7279\u70b9\">3.2\uff0c\u7ee7\u627f\u7684\u7279\u70b9<\/h3>\n<p><strong>1\uff0c\u5173\u4e8e\u7ee7\u627f\u7684\u6ce8\u610f\u4e8b\u9879\uff1a<\/strong><\/p>\n<p>\u200b \u53ea\u652f\u6301\u5355\u7ee7\u627f\uff0c\u5373\u4e00\u4e2a\u5b50\u7c7b\u53ea\u5141\u8bb8\u6709\u4e00\u4e2a\u7236\u7c7b\uff0c\u4f46\u662f\u53ef\u4ee5\u5b9e\u73b0\u591a\u7ea7\u7ee7\u627f\uff0c\u53ca\u5b50\u7c7b\u62e5\u6709\u552f\u4e00\u7684\u7236\u7c7b\uff0c\u800c\u7236\u7c7b\u8fd8\u53ef\u4ee5\u518d\u7ee7\u627f\u3002<\/p>\n<p>\u200b \u5b50\u7c7b\u53ef\u4ee5\u62e5\u6709\u7236\u7c7b\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u3002<\/p>\n<p>\u200b \u5b50\u7c7b\u53ef\u4ee5\u62e5\u6709\u81ea\u5df1\u7684\u5c5e\u6027\u548c\u65b9\u6cd5\u3002<\/p>\n<p>\u200b \u5b50\u7c7b\u53ef\u4ee5\u91cd\u5199\u8986\u76d6\u7236\u7c7b\u7684\u65b9\u6cd5\u3002<\/p>\n<p><strong>2\uff0c\u7ee7\u627f\u7684\u7279\u70b9\uff1a<\/strong><\/p>\n<pre><code class=\"hljs\">   \u63d0\u9ad8\u4ee3\u7801\u590d\u7528\u6027\u3002\n\n   \u7236\u7c7b\u7684\u5c5e\u6027\u65b9\u6cd5\u53ef\u4ee5\u7528\u4e8e\u5b50\u7c7b\u3002\n\n   \u53ef\u4ee5\u8f7b\u677e\u7684\u5b9a\u4e49\u5b50\u7c7b\u3002\n\n   \u4f7f\u8bbe\u8ba1\u5e94\u7528\u7a0b\u5e8f\u53d8\u5f97\u7b80\u5355\u3002\n<\/code><\/pre>\n<h3 id=\"33\uff0c\u7ee7\u627f\u7684\u4f7f\u7528\">3.3\uff0c\u7ee7\u627f\u7684\u4f7f\u7528<\/h3>\n<p>\u200b <strong>1\uff0c\u5728\u7236\u5b50\u7c7b\u5173\u7cfb\u7ee7\u627f\u4e2d\uff0c\u5982\u679c\u6210\u5458\u53d8\u91cf\u91cd\u540d\uff0c\u5219\u521b\u5efa\u5b50\u7c7b\u5bf9\u8c61\u65f6\uff0c\u8bbf\u95ee\u6709\u4e24\u79cd\u65b9\u5f0f\u3002<\/strong><\/p>\n<p>a\uff0c\u76f4\u63a5\u901a\u8fc7\u5b50\u7c7b\u5bf9\u8c61\u8bbf\u95ee\u6210\u5458\u53d8\u91cf<\/p>\n<p>\u200b \u7b49\u53f7\u5de6\u8fb9\u662f\u8c01\uff0c\u5c31\u4f18\u5148\u4f7f\u7528\u8c01\uff0c\u5982\u679c\u6ca1\u6709\u5c31\u5411\u4e0a\u627e\u3002<\/p>\n<p>b\uff0c\u95f4\u63a5\u901a\u8fc7\u6210\u5458\u65b9\u6cd5\u8bbf\u95ee\u6210\u5458\u53d8\u91cf<\/p>\n<p>\u8be5\u65b9\u6cd5\u5c5e\u4e8e\u8c01\uff0c\u8c01\u5c31\u4f18\u5148\u4f7f\u7528\uff0c\u5982\u679c\u6ca1\u6709\u5c31\u5411\u4e0a\u627e\u3002<\/p>\n<pre><code class=\"language-java hljs\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-class\"><span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title\">FU<\/span> <\/span>{\n    <span class=\"hljs-keyword\">int<\/span> numFU = <span class=\"hljs-number\">10<\/span>;\n    <span class=\"hljs-keyword\">int<\/span> num = <span class=\"hljs-number\">100<\/span>;\n    <span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title\">method<\/span><span class=\"hljs-params\">()<\/span><\/span>{\n        System.out.println(<span class=\"hljs-string\">\"\u7236\u7c7b\u6210\u5458\u53d8\u91cf\uff1a\"<\/span>+numFU);\n    }\n    <span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title\">methodFU<\/span><span class=\"hljs-params\">()<\/span><\/span>{\n        System.out.println(<span class=\"hljs-string\">\"\u7236\u7c7b\u6210\u5458\u65b9\u6cd5!\"<\/span>);\n    }\n}\n<\/code><\/pre>\n<pre><code class=\"language-java hljs\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-class\"><span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title\">Zi<\/span> <span class=\"hljs-keyword\">extends<\/span> <span class=\"hljs-title\">FU<\/span><\/span>{\n    <span class=\"hljs-keyword\">int<\/span> numZi = <span class=\"hljs-number\">20<\/span>;\n    <span class=\"hljs-keyword\">int<\/span> num = <span class=\"hljs-number\">200<\/span>;\n    <span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title\">method<\/span><span class=\"hljs-params\">()<\/span><\/span>{\n        System.out.println(<span class=\"hljs-string\">\"\u5b50\u7c7b\u6210\u5458\u53d8\u91cf\uff1a\"<\/span>+numFU);\n    }\n    <span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title\">methodZi<\/span><span class=\"hljs-params\">()<\/span><\/span>{\n        System.out.println(<span class=\"hljs-string\">\"\u5b50\u7c7b\u65b9\u6cd5\uff01\"<\/span>);\n    }\n}\n<\/code><\/pre>\n<pre><code class=\"language-java hljs\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-class\"><span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title\">ExtendDemo<\/span> <\/span>{\n    <span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">static<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title\">main<\/span><span class=\"hljs-params\">(String[] args)<\/span> <\/span>{\n        FU fu = <span class=\"hljs-keyword\">new<\/span> FU();\n        <span class=\"hljs-comment\">\/\/ \u7236\u7c7b\u7684\u5b9e\u4f53\u5bf9\u8c61\u53ea\u80fd\u8c03\u7528\u7236\u7c7b\u7684\u6210\u5458\u53d8\u91cf<\/span>\n        System.out.println(<span class=\"hljs-string\">\"\u7236\u7c7b\uff1a\"<\/span> + fu.numFU);   <span class=\"hljs-comment\">\/\/ \u7ed3\u679c\uff1a10<\/span>\n        \n        Zi zi = <span class=\"hljs-keyword\">new<\/span> Zi();\n        System.out.println(<span class=\"hljs-string\">\"\u8c03\u7528\u7236\u7c7b\uff1a\"<\/span> + zi.numFU); <span class=\"hljs-comment\">\/\/ \u7ed3\u679c\uff1a10<\/span>\n        System.out.println(<span class=\"hljs-string\">\"\u5b50\u7c7b\uff1a\"<\/span> + zi.numZi);   <span class=\"hljs-comment\">\/\/ \u7ed3\u679c\uff1a20<\/span>\n\n        <span class=\"hljs-comment\">\/** \u8f93\u51fa\u7ed3\u679c\u4e3a200\uff0c\u8bc1\u660e\u5728\u91cd\u540d\u60c5\u51b5\u4e0b\uff0c\u5982\u679c\u5b50\u7c7b\u4e2d\u5b58\u5728\u5219\u4f18\u5148\u4f7f\u7528\uff0c\n         *  \u5982\u679c\u4e0d\u5b58\u5728\u5219\u53bb\u7236\u7c7b\u67e5\u627e\uff0c\u4f46\u5982\u679c\u7236\u7c7b\u4e5f\u6ca1\u6709\u90a3\u4e48\u7f16\u8bd1\u671f\u5c31\u4f1a\u62a5\u9519\u3002\n         *\/<\/span>\n        System.out.println(zi.num); <span class=\"hljs-comment\">\/\/ \u7ed3\u679c\uff1a200<\/span>\n        <span class=\"hljs-comment\">\/**\n         * \u901a\u8fc7\u6210\u5458\u65b9\u6cd5\u8c03\u7528\u6210\u5458\u53d8\u91cf\n         *\/<\/span>\n        zi.method();    <span class=\"hljs-comment\">\/\/ \u7ed3\u679c\uff1a10<\/span>\n    }\n}\n<\/code><\/pre>\n<p><strong>2\uff0c\u540c\u7406\uff1a<\/strong><\/p>\n<p>\u200b \u6210\u5458\u65b9\u6cd5\u4e5f\u662f\u4e00\u6837\u7684\uff0c\u521b\u5efa\u7684\u5bf9\u8c61\u662f\u8c01\uff0c\u5c31\u4f18\u5148\u4f7f\u7528\u8c01\uff0c\u5982\u679c\u6ca1\u6709\u5219\u76f4\u63a5\u5411\u4e0a\u627e\u3002<br \/>\n\u200b <strong>\u6ce8\u610f\u4e8b\u9879\uff1a<\/strong><\/p>\n<p>\u200b \u65e0\u8bba\u662f\u6210\u5458\u53d8\u91cf\u8fd8\u662f\u6210\u5458\u65b9\u6cd5\uff0c\u5982\u679c\u6ca1\u6709\u90fd\u662f\u5411\u4e0a\u7236\u7c7b\u4e2d\u67e5\u627e\uff0c\u7edd\u5bf9\u4e0d\u4f1a\u5411\u4e0b\u67e5\u627e\u5b50\u7c7b\u7684\u3002<\/p>\n<p><strong>3\uff0c\u5728\u7ee7\u627f\u5173\u7cfb\u4e2d\uff0c\u5173\u4e8e\u6210\u5458\u53d8\u91cf\u7684\u4f7f\u7528\uff1a<\/strong><\/p>\n<p>\u200b \u5c40\u90e8\u6210\u5458\u53d8\u91cf\uff1a\u76f4\u63a5\u4f7f\u7528<br \/>\n\u200b \u672c\u7c7b\u6210\u5458\u53d8\u91cf\uff1athis.\u6210\u5458\u53d8\u91cf<br \/>\n\u200b \u7236\u7c7b\u6210\u5458\u53d8\u91cf\uff1asuper.\u7236\u7c7b\u6210\u5458\u53d8\u91cf<\/p>\n<pre><code class=\"language-java hljs\"><span class=\"hljs-keyword\">int<\/span> numZi = <span class=\"hljs-number\">10<\/span>;\n <span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title\">method<\/span><span class=\"hljs-params\">()<\/span> <\/span>{\n   <span class=\"hljs-keyword\">int<\/span> numMethod = <span class=\"hljs-number\">20<\/span>;\n   System.out.println(numMethod);  <span class=\"hljs-comment\">\/\/ \u8bbf\u95ee\u5c40\u90e8\u53d8\u91cf<\/span>\n   System.out.println(<span class=\"hljs-keyword\">this<\/span>.numZi); <span class=\"hljs-comment\">\/\/ \u8bbf\u95ee\u672c\u7c7b\u6210\u5458\u53d8\u91cf<\/span>\n   System.out.println(<span class=\"hljs-keyword\">super<\/span>.numFu); <span class=\"hljs-comment\">\/\/ \u8bbf\u95ee\u672c\u7c7b\u6210\u5458\u53d8\u91cf<\/span>\n}\n<\/code><\/pre>\n<h3 id=\"34\uff0c\u91cd\u5199\uff0c\u91cd\u8f7d\">3.4\uff0c\u91cd\u5199\uff0c\u91cd\u8f7d<\/h3>\n<p>\u200b <strong>\u91cd\u5199(override)<\/strong><\/p>\n<p>\u200b \u662f\u5b50\u7c7b\u5bf9\u7236\u7c7b\u7684\u5141\u8bb8\u8bbf\u95ee\u7684\u65b9\u6cd5\u7684\u5b9e\u73b0\u8fc7\u7a0b\u8fdb\u884c\u91cd\u65b0\u7f16\u5199, \u8fd4\u56de\u503c\u548c\u5f62\u53c2\u90fd\u4e0d\u80fd\u6539\u53d8\u3002<strong>\u5373\u5916\u58f3\u4e0d\u53d8\uff0c\u6838\u5fc3\u91cd\u5199\uff01<\/strong><\/p>\n<pre><code class=\"language-java hljs\"><span class=\"hljs-class\"><span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title\">Animal<\/span><\/span>{\n   <span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title\">move<\/span><span class=\"hljs-params\">()<\/span><\/span>{\n      System.out.println(<span class=\"hljs-string\">\"\u52a8\u7269\u884c\u8d70\uff01\"<\/span>);\n   }\n}\n \n<span class=\"hljs-class\"><span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title\">Dog<\/span> <span class=\"hljs-keyword\">extends<\/span> <span class=\"hljs-title\">Animal<\/span><\/span>{\n   <span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title\">move<\/span><span class=\"hljs-params\">()<\/span><\/span>{\n      System.out.println(<span class=\"hljs-string\">\"\u72d7\u53ef\u4ee5\u8dd1\u548c\u8d70\"<\/span>);\n   }\n}\n \n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-class\"><span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title\">TestDog<\/span><\/span>{\n   <span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">static<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title\">main<\/span><span class=\"hljs-params\">(String args[])<\/span><\/span>{\n      Animal a = <span class=\"hljs-keyword\">new<\/span> Animal(); <span class=\"hljs-comment\">\/\/ Animal \u5bf9\u8c61<\/span>\n      Animal b = <span class=\"hljs-keyword\">new<\/span> Dog(); <span class=\"hljs-comment\">\/\/ Dog \u5bf9\u8c61<\/span>\n      a.move();<span class=\"hljs-comment\">\/\/ \u6267\u884c Animal \u7c7b\u7684\u65b9\u6cd5<\/span>\n      b.move();<span class=\"hljs-comment\">\/\/\u6267\u884c Dog \u7c7b\u7684\u65b9\u6cd5<\/span>\n   }\n}\n<\/code><\/pre>\n<p>\u200b \u91cd\u5199\u7684\u89c4\u5219\uff1a<\/p>\n<p>\u200b 1\uff0c\u53c2\u6570\u5217\u8868\u5fc5\u987b\u4e0e\u88ab\u91cd\u5199\u65b9\u6cd5\u76f8\u540c\u3002<\/p>\n<p>\u200b 2\uff0c\u8bbf\u95ee\u6743\u9650\u4e0d\u80fd\u6bd4\u7236\u7c7b\u4e2d\u88ab\u91cd\u5199\u7684\u65b9\u6cd5\u7684\u8bbf\u95ee\u6743\u9650\u66f4\u4f4e\uff08public&gt;protected&gt;(default)&gt;private\uff09\u3002<\/p>\n<p>\u200b 3\uff0c\u7236\u7c7b\u6210\u5458\u7684\u65b9\u6cd5\u53ea\u80fd\u88ab\u5b83\u7684\u5b50\u7c7b\u91cd\u5199\u3002<\/p>\n<p>\u200b 4\uff0c\u88abfinal\u4fee\u9970\u7684\u65b9\u6cd5\u4e0d\u80fd\u88ab\u91cd\u5199\u3002<\/p>\n<p>\u200b 5\uff0c\u6784\u9020\u65b9\u6cd5\u4e0d\u80fd<\/p>\n<p><strong>\u91cd\u8f7d(overload)<\/strong><\/p>\n<p>\u200b \u662f\u5728\u4e00\u4e2a\u7c7b\u91cc\u9762\uff0c\u65b9\u6cd5\u540d\u5b57\u76f8\u540c\uff0c\u800c\u53c2\u6570\u4e0d\u540c\u3002\u8fd4\u56de\u7c7b\u578b\u53ef\u4ee5\u76f8\u540c\u4e5f\u53ef\u4ee5\u4e0d\u540c\u3002\u6bcf\u4e2a\u91cd\u8f7d\u7684\u65b9\u6cd5\uff08\u6216\u8005\u6784\u9020\u51fd\u6570\uff09\u90fd\u5fc5\u987b\u6709\u4e00\u4e2a\u72ec\u4e00\u65e0\u4e8c\u7684\u53c2\u6570\u7c7b\u578b\u5217\u8868\u3002<\/p>\n<p>\u200b \u6700\u5e38\u7528\u7684\u5730\u65b9\u5c31\u662f\u6784\u9020\u5668\u7684\u91cd\u8f7d\u3002<\/li>\n<\/ul>\n<pre><code class=\"language-java hljs\">   <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-class\"><span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title\">Overloading<\/span> <\/span>{\n       <span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">int<\/span> <span class=\"hljs-title\">test<\/span><span class=\"hljs-params\">()<\/span><\/span>{\n           System.out.println(<span class=\"hljs-string\">\"test1\"<\/span>);\n           <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-number\">1<\/span>;\n       }\n       <span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title\">test<\/span><span class=\"hljs-params\">(<span class=\"hljs-keyword\">int<\/span> a)<\/span><\/span>{\n           System.out.println(<span class=\"hljs-string\">\"test2\"<\/span>);\n       }   \n       <span class=\"hljs-comment\">\/\/\u4ee5\u4e0b\u4e24\u4e2a\u53c2\u6570\u7c7b\u578b\u987a\u5e8f\u4e0d\u540c<\/span>\n       <span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> String <span class=\"hljs-title\">test<\/span><span class=\"hljs-params\">(<span class=\"hljs-keyword\">int<\/span> a,String s)<\/span><\/span>{\n           System.out.println(<span class=\"hljs-string\">\"test3\"<\/span>);\n           <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-string\">\"returntest3\"<\/span>;\n       }   \n       <span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> String <span class=\"hljs-title\">test<\/span><span class=\"hljs-params\">(String s,<span class=\"hljs-keyword\">int<\/span> a)<\/span><\/span>{\n           System.out.println(<span class=\"hljs-string\">\"test4\"<\/span>);\n           <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-string\">\"returntest4\"<\/span>;\n       }    \n       <span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">static<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title\">main<\/span><span class=\"hljs-params\">(String[] args)<\/span><\/span>{\n           Overloading o = <span class=\"hljs-keyword\">new<\/span> Overloading();\n           System.out.println(o.test());\n           o.test(<span class=\"hljs-number\">1<\/span>);\n           System.out.println(o.test(<span class=\"hljs-number\">1<\/span>,<span class=\"hljs-string\">\"test3\"<\/span>));\n           System.out.println(o.test(<span class=\"hljs-string\">\"test4\"<\/span>,<span class=\"hljs-number\">1<\/span>));\n       }\n   }\n<\/code><\/pre>\n<p>\u200b \u91cd\u8f7d\u89c4\u5219\uff1a<\/p>\n<p>\u200b 1\uff0c\u88ab\u91cd\u8f7d\u7684\u65b9\u6cd5\u5fc5\u987b\u6539\u53d8\u53c2\u6570\u5217\u8868\uff08\u53c2\u6570\u4e2a\u6570\u6216\u8005\u7c7b\u578b\u4e0d\u4e00\u6837\uff09\u3002<\/p>\n<p>\u200b 2\uff0c\u88ab\u91cd\u8f7d\u7684\u65b9\u6cd5\u53ef\u4ee5\u6539\u53d8\u8fd4\u56de\u7c7b\u578b\u3002<\/p>\n<p>\u200b 3\uff0c\u88ab\u91cd\u8f7d\u7684\u65b9\u6cd5\u53ef\u4ee5\u6539\u53d8\u8bbf\u95ee\u4fee\u9970\u7b26\u3002<\/p>\n<h3 id=\"35\uff0cthis\uff0csuper\u5173\u952e\u5b57\">3.5\uff0cthis\uff0csuper\u5173\u952e\u5b57<\/h3>\n<p><strong>super()\u5173\u952e\u5b57\u7684\u7528\u6cd5<\/strong><br \/>\n\u200b 1\uff0c\u5b50\u7c7b\u7684\u6210\u5458\u65b9\u6cd5\u4e2d\uff0c\u8bbf\u95ee\u7236\u7c7b\u7684\u6210\u5458\u53d8\u91cf\u3002<\/p>\n<p>\u200b 2\uff0c\u5b50\u7c7b\u7684\u6210\u5458\u65b9\u6cd5\u4e2d\uff0c\u8bbf\u95ee\u7236\u7c7b\u7684\u6210\u5458\u65b9\u6cd5\u3002<br \/>\n3\uff0c\u5b50\u7c7b\u7684\u6784\u9020\u65b9\u6cd5\u4e2d\uff0c\u8bbf\u95ee\u7236\u7c7b\u7684\u6784\u9020\u65b9\u6cd5\u3002<\/p>\n<p><strong>this\u5173\u952e\u5b57\u7528\u6cd5\uff1a<\/strong><br \/>\n\u200b 1\uff0c\u672c\u7c7b\u6210\u5458\u65b9\u6cd5\u4e2d\uff0c\u8bbf\u95ee\u672c\u7c7b\u7684\u6210\u5458\u53d8\u91cf\u3002<br \/>\n\u200b 2\uff0c\u672c\u7c7b\u6210\u5458\u65b9\u6cd5\u4e2d\uff0c\u8bbf\u95ee\u672c\u7c7b\u7684\u53e6\u4e00\u4e2a\u6210\u5458\u65b9\u6cd5\u3002<br \/>\n3\uff0c\u672c\u7c7b\u7684\u6784\u9020\u65b9\u6cd5\u4e2d\uff0c\u8bbf\u95ee\u672c\u7c7b\u7684\u53e6\u4e00\u4e2a\u6784\u9020\u65b9\u6cd5\u3002<br \/>\n\u200b <mark>\u6ce8\u610f\uff1a<\/mark><\/p>\n<ul>\n<li>this\u5173\u952e\u5b57\u540csuper\u4e00\u6837\uff0c\u5fc5\u987b\u5728\u6784\u9020\u65b9\u6cd5\u7684\u7b2c\u4e00\u4e2a\u8bed\u53e5\uff0c\u4e14\u662f\u552f\u4e00\u7684\u3002<\/li>\n<li>this\u4e0esuper\u4e0d\u80fd\u540c\u65f6\u5b58\u5728\u3002<\/li>\n<\/ul>\n<h3 id=\"36\uff0c\u6784\u9020\u5668\">3.6\uff0c\u6784\u9020\u5668<\/h3>\n<p>\u200b <strong>\u7ee7\u627f\u5173\u7cfb\u4e2d\uff0c\u7236\u5b50\u7c7b\u6784\u9020\u65b9\u6cd5\u7684\u8bbf\u95ee\u7279\u70b9\uff1a<\/strong><br \/>\n\u200b 1\uff0c\u5728\u5b50\u7c7b\u6784\u9020\u65b9\u6cd5\u4e2d\u6709\u4e00\u4e2a\u9ed8\u8ba4\u9690\u542b\u7684super();\u8c03\u7528\uff0c\u56e0\u6b64\u4e00\u5b9a\u662f\u5148\u8c03\u7528\u7236\u7c7b\u6784\u9020\u65b9\u6cd5\uff0c\u518d\u8c03\u7528\u5b50\u7c7b\u6784\u9020\u65b9\u6cd5\u3002<br \/>\n\u200b 2\uff0c\u5b50\u7c7b\u6784\u9020\u53ef\u4ee5\u901a\u8fc7super();\u8c03\u7528\u7236\u7c7b\u7684\u91cd\u8f7d\u6784\u9020\u3002(\u91cd\u8f7d)<br \/>\n\u200b 3\uff0csuper();\u7684\u7236\u7c7b\u8c03\u7528\u6784\u9020\u65b9\u6cd5\uff0c\u5fc5\u987b\u5728\u5b50\u7c7b\u6784\u9020\u4e2d\u7684\u7b2c\u4e00\u884c\uff0c\u5c31\u662f\u7b2c\u4e00\u4e2a;\u53f7\u7ed3\u675f\u7684\u5143\u7d20\uff0c\u5e76\u4e14\u53ea\u80fd\u8c03\u7528\u4e00\u6b21\u3002<\/p>\n<h3 id=\"37\uff0c\u5173\u4e8e\u7ee7\u627f\u7684\u6ce8\u610f\u4e8b\u9879\uff1a\">3.7\uff0c\u5173\u4e8e\u7ee7\u627f\u7684\u6ce8\u610f\u4e8b\u9879\uff1a<\/h3>\n<p>\u200b 1\uff0cJava\u8bed\u8a00\u662f\u5355\u7ee7\u627f\u7684\uff0c\u4e00\u4e2a\u5b50\u7c7b\u53ea\u80fd\u6709\u552f\u4e00\u4e00\u4e2a\u7236\u7c7b<br \/>\n\u200b 2\uff0cJava\u8bed\u8a00\u53ef\u4ee5\u662f\u591a\u7ea7\u7ee7\u627f\uff0c\u4e00\u4e2a\u5b50\u7c7b\u6709\u4e00\u4e2a\u7236\u7c7b\uff0c\u4e00\u4e2a\u7236\u7c7b\u8fd8\u53ef\u4ee5\u6709\u4e00\u4e2a\u7236\u7c7b\u3002<br \/>\n\u200b 3\uff0c\u4e00\u4e2a\u5b50\u7c7b\u53ea\u6709\u4e00\u4e2a\u7236\u7c7b\uff0c\u4f46\u662f\u4e00\u4e2a\u7236\u7c7b\u53ef\u4ee5\u6709\u591a\u4e2a\u5b50\u7c7b\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1139\" src=\"http:\/\/admin.lastdream.net\/wp-content\/uploads\/2021\/01\/1655301-20190905083148379-927405540-1.png\" alt=\"\" width=\"1137\" height=\"608\" \/><\/p>\n<h1 id=\"\u56db\uff0c\u591a\u6001\">\u56db\uff0c\u591a\u6001<\/h1>\n<h3 id=\"41\uff0c\u4ec0\u4e48\u662f\u591a\u6001\">4.1\uff0c\u4ec0\u4e48\u662f\u591a\u6001<\/h3>\n<p>\u200b \u591a\u6001\u662f\u540c\u4e00\u4e2a\u884c\u4e3a\u5177\u6709\u591a\u4e2a\u4e0d\u540c\u8868\u73b0\u5f62\u5f0f\u6216\u5f62\u6001\u7684\u80fd\u529b\u3002<\/p>\n<h3 id=\"42\uff0c\u591a\u6001\u7684\u7279\u70b9\">4.2\uff0c\u591a\u6001\u7684\u7279\u70b9<\/h3>\n<p>\u200b 1\uff0c\u6d88\u9664\u7c7b\u578b\u4e4b\u95f4\u7684\u8026\u5408\u5173\u7cfb\uff0c\u5b9e\u73b0\u4f4e\u8026\u5408\u3002<\/p>\n<p>\u200b 2\uff0c\u7075\u6d3b\u6027\u3002<\/p>\n<p>\u200b 3\uff0c\u53ef\u6269\u5145\u6027\u3002<\/p>\n<p>\u200b 4\uff0c\u53ef\u66ff\u6362\u6027\u3002<\/p>\n<h3 id=\"43\uff0c\u591a\u6001\u7684\u4f53\u73b0\u5f62\u5f0f\">4.3\uff0c\u591a\u6001\u7684\u4f53\u73b0\u5f62\u5f0f<\/h3>\n<ul>\n<li>\u7ee7\u627f<\/li>\n<li>\u7236\u7c7b\u5f15\u7528\u6307\u5411\u5b50\u7c7b<\/li>\n<li>\u91cd\u5199\u200b <strong>\u6ce8\u610f\uff1a\u5728\u591a\u6001\u4e2d\uff0c\u7f16\u8bd1\u770b\u5de6\u8fb9\uff0c\u8fd0\u884c\u770b\u53f3\u8fb9<\/strong><\/li>\n<\/ul>\n<pre><code class=\"language-java hljs\">   <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-class\"><span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title\">MultiDemo<\/span> <\/span>{\n       <span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">static<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title\">main<\/span><span class=\"hljs-params\">(String[] args)<\/span> <\/span>{\n           <span class=\"hljs-comment\">\/\/ \u591a\u6001\u7684\u5f15\u7528\uff0c\u5c31\u662f\u5411\u4e0a\u8f6c\u578b<\/span>\n           Animals dog = <span class=\"hljs-keyword\">new<\/span> Dog();\n           dog.eat();\n           \n           Animals cat = <span class=\"hljs-keyword\">new<\/span> Cat();\n           cat.eat();\n           \n           <span class=\"hljs-comment\">\/\/ \u5982\u679c\u8981\u8c03\u7528\u7236\u7c7b\u4e2d\u6ca1\u6709\u7684\u65b9\u6cd5\uff0c\u5219\u8981\u5411\u4e0b\u8f6c\u578b<\/span>\n           Dog dogDown = (Dog)dog;\n           dogDown.watchDoor();\n   \n       }\n   }\n   <span class=\"hljs-class\"><span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title\">Animals<\/span> <\/span>{\n       <span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title\">eat<\/span><span class=\"hljs-params\">()<\/span><\/span>{\n           System.out.println(<span class=\"hljs-string\">\"\u52a8\u7269\u5403\u996d\uff01\"<\/span>);\n       }\n   }\n   <span class=\"hljs-class\"><span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title\">Dog<\/span> <span class=\"hljs-keyword\">extends<\/span> <span class=\"hljs-title\">Animals<\/span><\/span>{\n       <span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title\">eat<\/span><span class=\"hljs-params\">()<\/span><\/span>{\n           System.out.println(<span class=\"hljs-string\">\"\u72d7\u5728\u5403\u9aa8\u5934\uff01\"<\/span>);\n       }\n       <span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title\">watchDoor<\/span><span class=\"hljs-params\">()<\/span><\/span>{\n           System.out.println(<span class=\"hljs-string\">\"\u72d7\u770b\u95e8\uff01\"<\/span>);\n       }\n   }\n   <span class=\"hljs-class\"><span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title\">Cat<\/span> <span class=\"hljs-keyword\">extends<\/span> <span class=\"hljs-title\">Animals<\/span><\/span>{\n       <span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title\">eat<\/span><span class=\"hljs-params\">()<\/span><\/span>{\n           System.out.println(<span class=\"hljs-string\">\"\u732b\u5728\u5403\u9c7c\uff01\"<\/span>);\n       }\n   }\n<\/code><\/pre>\n<h3 id=\"44\uff0c\u5411\u4e0a\u8f6c\u578b\">4.4\uff0c\u5411\u4e0a\u8f6c\u578b<\/h3>\n<pre><code class=\"hljs coffeescript\"><span class=\"hljs-number\">1<\/span>\uff0c\u683c\u5f0f\uff1a\u7236\u7c7b\u540d\u79f0 \u5bf9\u8c61\u540d = <span class=\"hljs-keyword\">new<\/span> \u5b50\u7c7b\u540d\u79f0(); \n      \u542b\u4e49\uff1a\u53f3\u4fa7\u521b\u5efa\u4e00\u4e2a\u5b50\u7c7b\u5bf9\u8c61\uff0c\u628a\u5b83\u5f53\u4f5c\u7236\u7c7b\u6765\u4f7f\u7528\u3002\n      \u6ce8\u610f\uff1a\u5411\u4e0a\u8f6c\u578b\u4e00\u5b9a\u662f\u5b89\u5168\u7684\u3002\n      \u7f3a\u70b9\uff1a\u4e00\u65e6\u5411\u4e0a\u8f6c\u578b\uff0c\u5b50\u7c7b\u4e2d\u539f\u672c\u7279\u6709\u7684\u65b9\u6cd5\u5c31\u4e0d\u80fd\u518d\u88ab\u8c03\u7528\u4e86\u3002\t\n<\/code><\/pre>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1140\" src=\"http:\/\/admin.lastdream.net\/wp-content\/uploads\/2021\/01\/1655301-20190905083125412-702825019.png\" alt=\"\" width=\"1280\" height=\"552\" \/><\/p>\n<h1 id=\"\u4e94\uff0c\u63a5\u53e3\">\u4e94\uff0c\u63a5\u53e3<\/h1>\n<p>\u200b \u6700\u540e\uff0c\u5173\u4e8e\u63a5\u53e3\u65b9\u9762\u7684\u7ec6\u8282\uff0c\u4e0d\u540c\u7248\u672c\u4e4b\u95f4\u7684\u533a\u522b\u3002<\/p>\n<p><strong>\u95ee\u9898\u63cf\u8ff0\uff1a<\/strong><\/p>\n<p>\u200b \u73b0\u5728\u63a5\u53e3\u4e2d\u9700\u8981\u62bd\u53d6\u4e00\u4e2a\u516c\u6709\u7684\u65b9\u6cd5\uff0c\u7528\u6765\u89e3\u51b3\u9ed8\u8ba4\u65b9\u6cd5\u4e2d\u4ee3\u7801\u91cd\u590d\u7684\u95ee\u9898\u3002<br \/>\n\u200b \u4f46\u662f\u8fd9\u4e2a\u5171\u6709\u7684\u65b9\u6cd5\u4e0d\u80fd\u8ba9\u5b9e\u73b0\u7c7b\u5b9e\u73b0\uff0c\u6240\u4ee5\u5e94\u8be5\u8bbe\u7f6e\u4e3a\u79c1\u6709\u5316\u3002<\/p>\n<p><strong>\u5728JDK8\u4e4b\u540e\uff1a<\/strong><\/p>\n<p>\u200b 1\uff0cdefault\u4fee\u9970\uff0c\u63a5\u53e3\u91cc\u5141\u8bb8\u5b9a\u4e49\u9ed8\u8ba4\u7684\u65b9\u6cd5\uff0c\u4f46\u9ed8\u8ba4\u65b9\u6cd5\u4e5f\u53ef\u4ee5\u8986\u76d6\u91cd\u5199\u3002<br \/>\n\u200b 2\uff0c\u63a5\u53e3\u91cc\u5141\u8bb8\u5b9a\u4e49\u9759\u6001\u65b9\u6cd5\u3002<\/p>\n<p><strong>\u5728JDK9\u4e4b\u540e\uff1a<\/strong><\/p>\n<p>\u200b 1\uff0c\u666e\u901a\u79c1\u6709\u65b9\u6cd5\uff0c\u89e3\u51b3\u591a\u4e2a\u9ed8\u8ba4\u65b9\u6cd5\u4e4b\u95f4\u4ee3\u7801\u91cd\u590d\u7684\u95ee\u9898\u3002<br \/>\n\u200b 2\uff0c\u9759\u6001\u79c1\u6709\u5316\uff0c\u89e3\u51b3\u591a\u4e2a\u9759\u6001\u65b9\u6cd5\u4e4b\u95f4\u4ee3\u7801\u91cd\u590d\u95ee\u9898\u3002<br \/>\n\u200b\u00a0<strong>\u63a5\u53e3\u7684\u6ce8\u610f\u4e8b\u9879\uff1a<\/strong><br \/>\n\u200b 1\uff0c\u4e0d\u80fd\u901a\u8fc7\u63a5\u53e3\u7684\u5b9e\u73b0\u7c7b\u5bf9\u8c61\u53bb\u8c03\u7528\u63a5\u53e3\u4e2d\u7684\u9759\u6001\u65b9\u6cd5\u3002<br \/>\n\u200b \u6b63\u786e\u8bed\u6cd5\uff1a\u63a5\u53e3\u540d\u79f0\u8c03\u7528\u9759\u6001\u65b9\u6cd5\u3002<\/p>\n<p><strong>\u63a5\u53e3\u5f53\u4e2d\u7684\u5e38\u91cf\u7684\u4f7f\u7528\uff1a<\/strong><\/p>\n<p>\u200b 1\uff0c\u63a5\u53e3\u5f53\u4e2d\u5b9a\u4e49\u7684\u5e38\u91cf\uff1a\u53ef\u4ee5\u7701\u7565public static final\u3002<br \/>\n\u200b 2\uff0c\u63a5\u53e3\u5f53\u4e2d\u5b9a\u4e49\u7684\u5e38\u91cf\uff1a\u5fc5\u987b\u8fdb\u884c\u8d4b\u503c\u3002<br \/>\n\u200b 3\uff0c\u63a5\u53e3\u5f53\u4e2d\u5b9a\u4e49\u7684\u5e38\u91cf\uff1a\u5e38\u91cf\u7684\u540d\u79f0\u8981\u5168\u90e8\u5927\u5199\uff0c\u591a\u4e2a\u540d\u79f0\u4e4b\u95f4\u4f7f\u7528\u4e0b\u5212\u7ebf\u8fdb\u884c\u5206\u5272\u3002<\/p>\n<p><strong>\u4f7f\u7528\u63a5\u53e3\u7684\u6ce8\u610f\u4e8b\u9879\uff1a<\/strong><\/p>\n<p>\u200b 1\uff0c\u63a5\u53e3\u662f\u6ca1\u6709\u9759\u6001\u4ee3\u7801\u5757\u6216\u8005\u6784\u9020\u65b9\u6cd5<br \/>\n\u200b 2\uff0c\u4e00\u4e2a\u7c7b\u7684\u76f4\u63a5\u7236\u7c7b\u662f\u552f\u4e00\u7684\uff0c\u4f46\u662f\u4e00\u4e2a\u7c7b\u53ef\u4ee5\u540c\u65f6\u5b9e\u73b0\u591a\u4e2a\u63a5\u53e3\u3002<br \/>\n\u200b 3\uff0c\u5982\u679c\u5b9e\u73b0\u7c7b\u6ca1\u6709\u8986\u76d6\u91cd\u5199\u63a5\u53e3\u4e2d\u6240\u6709\u7684\u62bd\u8c61\u65b9\u6cd5\uff0c\u90a3\u4e48\u5b9e\u73b0\u7c7b\u5c31\u5fc5\u987b\u662f\u4e00\u4e2a\u62bd\u8c61\u7c7b<br \/>\n\u200b 4\uff0c\u5982\u679c\u5b9e\u73b0\u7c7b\u4e2d\u5b9e\u73b0\u591a\u4e2a\u63a5\u53e3\uff0c\u5b58\u5728\u91cd\u590d\u7684\u62bd\u8c61\u65b9\u6cd5\uff0c\u90a3\u4e48\u53ea\u9700\u8981\u8986\u76d6\u91cd\u5199\u4e00\u6b21\u5373\u53ef\u3002<br \/>\n\u200b 5\uff0c\u5728Java\u4e2d\uff0c\u5982\u679c\u5b9e\u73b0\u7c7b\u7684\u76f4\u63a5\u7ee7\u627f\u7236\u7c7b\u4e0e\u5b9e\u73b0\u63a5\u53e3\u53d1\u751f\u51b2\u7a81\u65f6\uff0c\u7236\u7c7b\u4f18\u5148\u7ea7\u9ad8\u4e8e\u63a5\u53e3\u3002<\/p>\n<p><strong>\u63a5\u53e3\u4e4b\u95f4\u7684\u5173\u7cfb\uff1a<\/strong><\/p>\n<p>\u200b 1\uff0c\u591a\u4e2a\u63a5\u53e3\u4e4b\u95f4\u662f\u7ee7\u627f\u5173\u7cfb\u3002<br \/>\n\u200b 2\uff0c\u591a\u4e2a\u7236\u63a5\u53e3\u5f53\u4e2d\u9ed8\u8ba4\u65b9\u6cd5\u5982\u679c\u91cd\u590d\uff0c\u90a3\u4e48\u5b50\u63a5\u53e3\u5fc5\u987b\u8fdb\u884c\u9ed8\u8ba4\u65b9\u6cd5\u7684\u8986\u76d6\u91cd\u5199\u3002<\/p>\n<h1 id=\"\u516d\uff0c\u603b\u7ed3\">\u516d\uff0c\u603b\u7ed3<\/h1>\n<p>\u200b \u5173\u4e8eJava\u7684\u7279\u6027\u57fa\u672c\u603b\u7ed3\u5b8c\u6bd5\uff0c\u5f53\u7136\u8fd8\u6709\u4e00\u4e9b\u7ec6\u8282\u6ca1\u6709\u5b8c\u5584\u3002\u5176\u5b9e\u5bf9\u4e8e\u8fd9\u4e9bJava\u57fa\u7840\u4e00\u5b9a\u8981\u638c\u63e1\u5e76\u719f\u8bb0\uff0c\u56e0\u4e3a\u8fd9\u4e0e\u6211\u4eec\u7684\u5b9e\u9645\u5f00\u53d1\u5bc6\u5207\u76f8\u5173\uff0c\u597d\u7684\u7f16\u7801\u4e60\u60ef\u624d\u80fd\u94f8\u5c31\u597d\u7684\u4ea7\u54c1\uff0c\u624d\u80fd\u88ab\u793e\u4f1a\u8ba4\u53ef\u3002<\/p>\n<p>\u200b \u4ee5\u4e0a\u603b\u7ed3\u5747\u662f\u81ea\u5df1\u5b66\u4e60\u6240\u5f97\uff0c\u5982\u6709\u4e0d\u9002\u4e4b\u5904\uff0c\u8fd8\u8bf7\u7559\u8a00\uff08\u90ae\u7bb1\uff09\u6307\u6559\u3002<\/p>\n<p>\u611f\u8c22\u9605\u8bfb\uff01<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Java\u4e4b\u5c01\u88c5\uff0c\u7ee7\u627f\uff0c\u591a\u6001 https:\/\/www.cnblogs.com\/fenjyang\/p\/114622 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