{"id":203634,"date":"2025-05-22T13:43:38","date_gmt":"2025-05-22T05:43:38","guid":{"rendered":"https:\/\/server.hk\/cnblog\/203634\/"},"modified":"2025-05-22T13:43:38","modified_gmt":"2025-05-22T05:43:38","slug":"%e8%bf%99%e6%98%af-java-%e4%b8%ad%e7%9a%84%e9%94%99%e8%af%af%e5%90%97%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/203634\/","title":{"rendered":"\u8fd9\u662f Java \u4e2d\u7684\u9519\u8bef\u5417\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u8fd9\u662f Java \u4e2d\u7684\u9519\u8bef\u5417\uff1f<\/h1>\n<p><span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span>    <\/p>\n<p>\u54c8\u55bd\uff01\u5927\u5bb6\u597d\uff0c\u5f88\u9ad8\u5174\u53c8\u89c1\u9762\u4e86\uff0c\u6211\u662f\u7684\u4e00\u540d\u4f5c\u8005\uff0c\u4eca\u5929\u7531\u6211\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u7bc7<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a\u8fd9\u662f Java \u4e2d\u7684\u9519\u8bef\u5417\uff1f\u300b<\/span>\uff0c\u672c\u6587\u4e3b\u8981\u4f1a\u8bb2\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u5927\u5bb6\u4e00\u8d77\u5b66\u4e60\u8fdb\u6b65\uff0c\u4e5f\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u3001\u70b9\u8d5e\u3001\u6536\u85cf\u3001\u8f6c\u53d1! \u4e0b\u9762\u5c31\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241115\/17316358666736aa9a11167.jpg\" class=\"aligncenter\"><\/p>\n<p>\u6700\u8fd1\uff0c\u6211\u60f3\u5728 java \u4e2d\u91cd\u65b0\u521b\u5efa console.log \u7684\u7075\u6d3b\u6027\uff0c\u6240\u4ee5\u6211\u51b3\u5b9a\u7f16\u5199\u4e00\u4e2a\u901a\u7528\u7684\u6253\u5370\u51fd\u6570\uff0c\u5b83\u53ef\u4ee5\u63a5\u53d7\u591a\u4e2a\u53c2\u6570\u5e76\u4ee5\u9017\u53f7\u5206\u9694\u6253\u5370\u5b83\u4eec\uff0c\u5c31\u50cf javascript \u6216 typescript \u4e2d\u7684 console.log \u4e00\u6837\u3002\u7ed3\u679c\u5462\uff1f\u6211\u7559\u4e0b\u7684\u95ee\u9898\u591a\u4e8e\u7b54\u6848\u3002\u8ba9\u6211\u5e26\u60a8\u4e86\u89e3\u4e00\u4e0b\u3002<\/p>\n<h3> java \u4ee3\u7801 <\/h3>\n<p>\u6211\u9996\u5148\u7528 java \u7f16\u5199\u4e00\u4e2a\u7b80\u5355\u7684\u6cdb\u578b\u51fd\u6570\uff0c\u5b83\u63a5\u53d7 t \u7c7b\u578b\u7684\u53ef\u53d8\u53c2\u6570\u5e76\u6253\u5370\u5b83\u4eec\uff0c\u7528\u9017\u53f7\u5206\u9694\u503c\uff1a<\/p>\n<pre>public class main {\n    public static void main(string[] args) {\n        main.print(1, \"4\", new arraylist&lt;&gt;());\n        \/\/ expected type issues, but it ran without any problem!\n    }\n\n    private static &lt;t&gt; void print(t... args) {\n        system.out.println(arrays.tostring(args));\n    }\n}\n<\/pre>\n<p>\u5f53\u6211\u4f20\u9012\u6df7\u5408\u7c7b\u578b\uff08integer\u3001string \u548c arraylist\uff09\u65f6\uff0c\u6211\u9884\u8ba1 java \u7684\u4e25\u683c\u7c7b\u578b\u4f1a\u8b66\u544a\u6211\u6216\u629b\u51fa\u9519\u8bef\uff0c\u4f46\u4e8b\u5b9e\u5e76\u975e\u5982\u6b64\u3002\u4ee3\u7801\u7f16\u8bd1\u5e76\u8fd0\u884c\u5f97\u5f88\u597d\uff0c\u6253\u5370 [1, 4, []] \u6ca1\u6709\u4efb\u4f55\u62b1\u6028\u3002<\/p>\n<p>\u8fd9\u8ba9\u6211\u611f\u5230\u60ca\u8bb6\uff0c\u56e0\u4e3a\u4f5c\u4e3a\u4e00\u4e2a\u4e5f\u4f7f\u7528 typescript \u7684\u4eba\uff0c\u8fd9\u611f\u89c9\u5f88\u4e0d\u8212\u670d\u3002 java \u4e0d\u5e94\u8be5\u6355\u83b7\u8fd9\u79cd\u7c7b\u578b\u4e0d\u4e00\u81f4\u5417\uff1f<\/p>\n<h3> \u5728 typescript \u4e2d\u5c1d\u8bd5 <\/h3>\n<p>\u81ea\u7136\u5730\uff0c\u6211\u8f6c\u5411 typescript \u770b\u770b\u5b83\u5982\u4f55\u5904\u7406\u8fd9\u4e2a\u95ee\u9898\u3002\u6211\u5728 typescript \u4e2d\u5199\u4e86\u4e00\u4e2a\u7c7b\u4f3c\u7684\u51fd\u6570\uff1a<\/p>\n<pre>function print&lt;T&gt;(...args: T[]) {\n  console.log(args.join(\",\"));\n}\n\nprint(1, \"4\", []);\n\/\/ TS warns (which makes sense):\n\/\/ Argument of type 'string' is not assignable to parameter of type 'number'.\n<\/pre>\n<p>\u6b63\u5982\u9884\u671f\u7684\u90a3\u6837\uff0ctypescript \u629b\u51fa\u4e86\u8b66\u544a\uff01\u7531\u4e8e typescript \u6839\u636e\u7b2c\u4e00\u4e2a\u53c2\u6570 (1) \u5c06\u7c7b\u578b t \u63a8\u65ad\u4e3a\u6570\u5b57\uff0c\u56e0\u6b64\u5b83\u5c06\u7b2c\u4e8c\u4e2a\u548c\u7b2c\u4e09\u4e2a\u53c2\u6570\uff08\u201c4\u201d\u548c []\uff09\u6807\u8bb0\u4e3a\u65e0\u6548\u3002\u8fd9\u79cd\u884c\u4e3a\u975e\u5e38\u6709\u610f\u4e49\uff0c\u56e0\u4e3a typescript \u5f3a\u5236\u6cdb\u578b\u51fd\u6570\u4f7f\u7528\u4e00\u81f4\u7684\u7c7b\u578b\u3002<\/p>\n<h3> \u90a3\u4e48\uff0c\u8fd9\u662f java \u4e2d\u7684\u4e00\u4e2a\u9519\u8bef\u5417\uff1f <\/h3>\n<p>\u4e0d\u4e00\u5b9a\u3002\u8fd9\u91cc\u53d1\u751f\u7684\u4e8b\u60c5\u662f java \u7684\u7c7b\u578b\u7cfb\u7edf\u7531\u4e8e\u7c7b\u578b\u64e6\u9664\u800c\u8868\u73b0\u4e0d\u540c\u3002\u5728 java 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\u4e2d\u7684\u9519\u8bef\u5417\uff1f \u6536&#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-203634","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203634","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=203634"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203634\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=203634"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=203634"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=203634"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}