{"id":203013,"date":"2025-05-22T08:55:12","date_gmt":"2025-05-22T00:55:12","guid":{"rendered":"https:\/\/server.hk\/cnblog\/203013\/"},"modified":"2025-05-22T08:55:12","modified_gmt":"2025-05-22T00:55:12","slug":"%e9%ab%98%e9%98%b6%e5%87%bd%e6%95%b0%e6%9c%89%e4%bd%95%e4%bc%98%e5%8a%bf%ef%bc%8c%e4%b8%ba%e4%bd%95%e5%9c%a8-java-%e4%b8%ad%e5%b8%b8%e7%94%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/203013\/","title":{"rendered":"\u9ad8\u9636\u51fd\u6570\u6709\u4f55\u4f18\u52bf\uff0c\u4e3a\u4f55\u5728 Java \u4e2d\u5e38\u7528"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u9ad8\u9636\u51fd\u6570\u6709\u4f55\u4f18\u52bf\uff0c\u4e3a\u4f55\u5728 Java \u4e2d\u5e38\u7528<\/h1>\n<p>\u4e00\u5206\u8015\u8018\uff0c\u4e00\u5206\u6536\u83b7\uff01\u65e2\u7136\u90fd\u6253\u5f00\u8fd9\u7bc7<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a\u9ad8\u9636\u51fd\u6570\u6709\u4f55\u4f18\u52bf\uff0c\u4e3a\u4f55\u5728 Java \u4e2d\u5e38\u7528\u300b<\/span>\uff0c\u5c31\u575a\u6301\u770b\u4e0b\u53bb\uff0c\u5b66\u4e0b\u53bb\u5427\uff01\u672c\u6587\u4e3b\u8981\u4f1a\u7ed9\u5927\u5bb6\u8bb2\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u5927\u5bb6\u5bf9\u672c\u6587\u6709\u597d\u7684\u5efa\u8bae\u6216\u8005\u770b\u5230\u6709\u4e0d\u8db3\u4e4b\u5904\uff0c\u975e\u5e38\u6b22\u8fce\u5927\u5bb6\u79ef\u6781\u63d0\u51fa\uff01\u5728\u540e\u7eed\u6587\u7ae0\u6211\u4f1a\u7ee7\u7eed\u66f4\u65b0<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u76f8\u5173\u7684\u5185\u5bb9\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u90fd\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241027\/1730020053671e02d502c8e.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u9ad8\u9636\u51fd\u6570\u7684\u4f18\u52bf\u53ca\u5728 Java \u4e2d\u7684\u5e94\u7528<\/strong><\/p>\n<p><strong>\u9ad8\u9636\u51fd\u6570\u7684\u4f18\u52bf<\/strong><\/p>\n<ul>\n<li><strong>\u4ee3\u7801\u91cd\u7528\u6027\uff1a<\/strong>\u9ad8\u9636\u51fd\u6570\u5141\u8bb8\u5c06\u901a\u7528\u903b\u8f91\u5c01\u88c5\u4e3a\u72ec\u7acb\u51fd\u6570\uff0c\u4ece\u800c\u63d0\u9ad8\u4ee3\u7801\u91cd\u7528\u6027\u3002<\/li>\n<li><strong>\u53ef\u8bfb\u6027\uff1a<\/strong>\u901a\u8fc7\u5c06\u590d\u6742\u903b\u8f91\u62c6\u5206\u4e3a\u8f83\u5c0f\u7684\u53ef\u7ba1\u7406\u51fd\u6570\uff0c\u4ee3\u7801\u53d8\u5f97\u66f4\u52a0\u53ef\u8bfb\u548c\u53ef\u7ef4\u62a4\u3002<\/li>\n<li><strong>\u53ef\u6d4b\u8bd5\u6027\uff1a<\/strong>\u9ad8\u9636\u51fd\u6570\u901a\u5e38\u6613\u4e8e\u6d4b\u8bd5\uff0c\u56e0\u4e3a\u5b83\u4eec\u4e0e\u72b6\u6001\u548c\u5916\u90e8\u4f9d\u8d56\u6027\u5206\u79bb\u3002<\/li>\n<li><strong>\u51fd\u6570\u7ec4\u5408\uff1a<\/strong>\u9ad8\u9636\u51fd\u6570\u53ef\u4ee5\u7ec4\u5408\u5728\u4e00\u8d77\u5f62\u6210\u66f4\u590d\u6742\u7684\u7ba1\u9053\uff0c\u4f7f\u60a8\u53ef\u4ee5\u521b\u5efa\u590d\u6742\u7684\u5904\u7406\u6d41\u7a0b\u3002<\/li>\n<\/ul>\n<p><strong>\u9ad8\u9636\u51fd\u6570\u5728 Java \u4e2d\u7684\u5e94\u7528<\/strong><\/p>\n<p>Java \u4e2d\u63d0\u4f9b\u4e86\u8bb8\u591a\u652f\u6301\u9ad8\u9636\u51fd\u6570\u7684\u7279\u6027\uff1a<\/p>\n<p><strong>1. \u51fd\u6570\u63a5\u53e3<\/strong><\/p>\n<p>\u51fd\u6570\u63a5\u53e3\u662f\u5177\u6709\u5355\u4e2a\u62bd\u8c61\u65b9\u6cd5\u7684\u63a5\u53e3\uff0c\u5b83\u5141\u8bb8\u5c06\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9\u5176\u4ed6\u51fd\u6570\u3002<\/p>\n<pre>@FunctionalInterface\ninterface MyInterface {\n    void doSomething(String str);\n}<\/pre>\n<p><strong>2. Lambda \u8868\u8fbe\u5f0f<\/strong><\/p>\n<p>Lambda \u8868\u8fbe\u5f0f\u662f\u4e00\u79cd\u533f\u540d\u51fd\u6570\uff0c\u53ef\u4ee5\u5b9e\u73b0\u51fd\u6570\u63a5\u53e3\u3002Lambda \u8868\u8fbe\u5f0f\u53ef\u4ee5\u5185\u8054\u4f7f\u7528\uff0c\u907f\u514d\u4e3a\u7b80\u5355\u51fd\u6570\u521b\u5efa\u5355\u72ec\u7684\u7c7b\u3002<\/p>\n<pre>MyInterface myInterface = str -&gt; System.out.println(str);<\/pre>\n<p><strong>3. \u65b9\u6cd5\u5f15\u7528<\/strong><\/p>\n<p>\u65b9\u6cd5\u5f15\u7528\u662f\u4e00\u79cd\u66ff\u4ee3 lambda \u8868\u8fbe\u5f0f\u7684\u65b9\u5f0f\uff0c\u5b83\u53ef\u4ee5\u5f15\u7528\u5df2\u7ecf\u5b58\u5728\u7684\u65b9\u6cd5\u3002\u65b9\u6cd5\u5f15\u7528\u53ef\u4ee5\u7b80\u5316\u9700\u8981\u4e3a\u5355\u4e2a\u65b9\u6cd5\u521b\u5efa lambda \u8868\u8fbe\u5f0f\u7684\u60c5\u51b5\u3002<\/p>\n<pre>MyInterface myInterface = System.out::println;<\/pre>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p>\u8003\u8651\u4ee5\u4e0b\u9700\u8981\u6839\u636e\u5355\u8bcd\u957f\u5ea6\u5bf9\u5355\u8bcd\u5217\u8868\u6392\u5e8f\u7684\u793a\u4f8b\uff1a<\/p>\n<pre>List&lt;String&gt; words = List.of(\"apple\", \"banana\", \"cherry\", \"dog\", \"elephant\");<\/pre>\n<p><strong>\u4f7f\u7528\u4f20\u7edf\u65b9\u6cd5\uff1a<\/strong><\/p>\n<pre>Collections.sort(words, new Comparator&lt;String&gt;() {\n    @Override\n    public int compare(String o1, String o2) {\n        return o1.length() - o2.length();\n    }\n});<\/pre>\n<p><strong>\u4f7f\u7528\u9ad8\u9636\u51fd\u6570\uff1a<\/strong><\/p>\n<pre>Collections.sort(words, Comparator.comparingInt(String::length));<\/pre>\n<p>\u5728\u9ad8\u9636\u51fd\u6570\u65b9\u6cd5\u4e2d\uff0c<code>Comparator.comparingInt(String::length)<\/code> \u51fd\u6570\u5c06\u83b7\u53d6\u5355\u8bcd\u7684\u957f\u5ea6\u5e76\u8fd4\u56de\u4e00\u4e2a <code>Comparator<\/code>\uff0c\u8be5 <code>Comparator<\/code> \u7528\u4e8e\u6267\u884c\u6392\u5e8f\u3002<\/p>\n<p>\u9ad8\u9636\u51fd\u6570\u65b9\u6cd5\u6bd4\u4f20\u7edf\u65b9\u6cd5\u66f4\u7b80\u6d01\u3001\u66f4\u6e05\u6670\uff0c\u5e76\u4e14\u53ef\u4ee5\u901a\u8fc7\u7ec4\u5408\u5176\u4ed6\u9ad8\u9636\u51fd\u6570\u8f7b\u677e\u6269\u5c55\uff0c\u4f8b\u5982\u8fc7\u6ee4\u6216\u6620\u5c04\u3002<\/p>\n<p>\u4eca\u5929\u5173\u4e8e\u300a\u9ad8\u9636\u51fd\u6570\u6709\u4f55\u4f18\u52bf\uff0c\u4e3a\u4f55\u5728 Java \u4e2d\u5e38\u7528\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":"<p>\u9ad8\u9636\u51fd\u6570\u6709\u4f55\u4f18\u52bf\uff0c\u4e3a\u4f55\u5728 Jav&#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-203013","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203013","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=203013"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203013\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=203013"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=203013"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=203013"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}