{"id":202765,"date":"2025-05-22T09:53:44","date_gmt":"2025-05-22T01:53:44","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202765\/"},"modified":"2025-05-22T09:53:44","modified_gmt":"2025-05-22T01:53:44","slug":"%e6%8e%a2%e7%b4%a2-java-%e5%87%bd%e6%95%b0%e9%87%8d%e7%94%a8%e6%80%a7%e7%9a%84%e5%b1%80%e9%99%90%e6%80%a7%e5%92%8c%e5%9b%b0%e9%9a%be","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202765\/","title":{"rendered":"\u63a2\u7d22 Java \u51fd\u6570\u91cd\u7528\u6027\u7684\u5c40\u9650\u6027\u548c\u56f0\u96be"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u63a2\u7d22 Java \u51fd\u6570\u91cd\u7528\u6027\u7684\u5c40\u9650\u6027\u548c\u56f0\u96be<\/h1>\n<p>\u672c\u7bc7\u6587\u7ae0\u5411\u5927\u5bb6\u4ecb\u7ecd\u300a\u63a2\u7d22 Java \u51fd\u6570\u91cd\u7528\u6027\u7684\u5c40\u9650\u6027\u548c\u56f0\u96be\u300b\uff0c\u4e3b\u8981\u5305\u62ec\uff0c\u5177\u6709\u4e00\u5b9a\u7684\u53c2\u8003\u4ef7\u503c\uff0c\u9700\u8981\u7684\u670b\u53cb\u53ef\u4ee5\u53c2\u8003\u4e00\u4e0b\u3002<\/p>\n<p>Java \u51fd\u6570\u91cd\u7528\u6027\u53d7\u5236\u4e8e\u4ee5\u4e0b\u5c40\u9650\uff1a\u65e0\u6cd5\u91cd\u7528\u79c1\u6709\u65b9\u6cd5\u3001\u8fd4\u56de\u503c\u7c7b\u578b\u548c\u53c2\u6570\u7c7b\u578b\u53d7\u9650\u3002\u7136\u800c\uff0c\u901a\u8fc7\u4f7f\u7528\u63a5\u53e3\u3001\u6cdb\u578b\u548c\u59d4\u6258\uff0c\u53ef\u4ee5\u514b\u670d\u8fd9\u4e9b\u9650\u5236\uff0c\u4ece\u800c\u5b9e\u73b0\u51fd\u6570\u91cd\u7528\u6027\uff0c\u63d0\u9ad8\u4ee3\u7801\u53ef\u91cd\u7528\u6027\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729939700671cc8f4acb56.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u63a2\u7d22 Java \u51fd\u6570\u91cd\u7528\u6027\u7684\u5c40\u9650\u6027\u548c\u56f0\u96be<\/strong><\/p>\n<p><strong>\u5f15\u8a00<\/strong><\/p>\n<p>\u51fd\u6570\u91cd\u7528\u6027\u662f\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\u7684\u4e00\u9879\u57fa\u672c\u539f\u5219\uff0c\u6307\u80fd\u591f\u5728\u4e0d\u540c\u7a0b\u5e8f\u6216\u6a21\u5757\u4e2d\u91cd\u590d\u4f7f\u7528\u51fd\u6570\u3002\u7136\u800c\uff0c\u5728 Java \u4e2d\u5b9e\u73b0\u51fd\u6570\u91cd\u7528\u6027\u5b58\u5728\u4e00\u4e9b\u5c40\u9650\u6027\u548c\u56f0\u96be\u3002\u672c\u6587\u5c06\u63a2\u8ba8\u8fd9\u4e9b\u95ee\u9898\u4ee5\u53ca\u5982\u4f55\u514b\u670d\u5b83\u4eec\u3002<\/p>\n<p><strong>\u5c40\u9650\u6027\u548c\u56f0\u96be<\/strong><\/p>\n<p>Java \u51fd\u6570\u91cd\u7528\u6027\u7684\u5c40\u9650\u6027\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u65e0\u6cd5\u91cd\u7528\u79c1\u6709\u65b9\u6cd5\uff1a<\/strong>\u79c1\u6709\u65b9\u6cd5\u53ea\u80fd\u5728\u58f0\u660e\u5b83\u4eec\u7684\u7c7b\u4e2d\u4f7f\u7528\uff0c\u65e0\u6cd5\u5728\u5176\u4ed6\u7c7b\u4e2d\u91cd\u7528\u3002<\/li>\n<li><strong>\u8fd4\u56de\u503c\u7c7b\u578b\u7684\u9650\u5236\uff1a<\/strong>Java \u65b9\u6cd5\u5fc5\u987b\u8fd4\u56de\u9884\u5b9a\u4e49\u7c7b\u578b\u7684\u8fd4\u56de\u503c\uff0c\u8fd9\u9650\u5236\u4e86\u91cd\u7528\u7684\u7075\u6d3b\u6027\u3002<\/li>\n<li><strong>\u53c2\u6570\u7c7b\u578b\u7684\u9650\u5236\uff1a<\/strong>Java \u65b9\u6cd5\u53ea\u80fd\u63a5\u53d7\u7279\u5b9a\u7c7b\u578b\u7684\u53c2\u6570\uff0c\u8fd9\u9650\u5236\u4e86\u5b83\u4eec\u5728\u4e0d\u540c\u4e0a\u4e0b\u6587\u4e2d\u4f7f\u7528\u7684\u80fd\u529b\u3002<\/li>\n<\/ul>\n<p><strong>\u514b\u670d\u9650\u5236<\/strong><\/p>\n<p>\u5c3d\u7ba1\u5b58\u5728\u8fd9\u4e9b\u5c40\u9650\u6027\uff0c\u4f46\u6709\u4e00\u4e9b\u65b9\u6cd5\u53ef\u4ee5\u514b\u670d\u5b83\u4eec\u5e76\u5b9e\u73b0\u51fd\u6570\u91cd\u7528\u6027\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u63a5\u53e3\uff1a<\/strong>\u63a5\u53e3\u5b9a\u4e49\u4e86\u4e00\u7ec4\u62bd\u8c61\u65b9\u6cd5\uff0c\u5141\u8bb8\u5b9e\u73b0\u8be5\u63a5\u53e3\u7684\u7c7b\u63d0\u4f9b\u5177\u4f53\u5b9e\u73b0\u3002\u8fd9\u5141\u8bb8\u5728\u4e0d\u540c\u7c7b\u4e2d\u91cd\u7528\u62bd\u8c61\u65b9\u6cd5\u3002<\/li>\n<li><strong>\u4f7f\u7528\u6cdb\u578b\uff1a<\/strong>\u6cdb\u578b\u7c7b\u548c\u65b9\u6cd5\u53ef\u4ee5\u63a5\u53d7\u4efb\u4f55\u7c7b\u578b\u7684\u53c2\u6570\u6216\u8fd4\u56de\u4efb\u4f55\u7c7b\u578b\u7684\u8fd4\u56de\u503c\uff0c\u4ece\u800c\u589e\u52a0\u4e86\u51fd\u6570\u91cd\u7528\u6027\u3002<\/li>\n<li><strong>\u4f7f\u7528\u59d4\u6258\uff1a<\/strong>\u59d4\u6258\u53ef\u4ee5\u5c06\u4e00\u4e2a\u65b9\u6cd5\u7684\u8c03\u7528\u59d4\u6258\u7ed9\u53e6\u4e00\u4e2a\u65b9\u6cd5\uff0c\u4ece\u800c\u5141\u8bb8\u5728\u5176\u4ed6\u7c7b\u4e2d\u91cd\u7528\u65b9\u6cd5\u3002<\/li>\n<\/ul>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p>\u8003\u8651\u4e00\u4e2a\u7528\u6765\u8ba1\u7b97\u4e24\u4e2a\u6570\u548c\u7684\u51fd\u6570\uff1a<\/p>\n<pre>\/\/ \u5e38\u89c4\u51fd\u6570\npublic static int add(int a, int b) {\n    return a + b;\n}<\/pre>\n<p>\u8fd9\u4e2a\u51fd\u6570\u53ea\u80fd\u8ba1\u7b97 int \u578b\u6570\u7684\u548c\u3002\u4e3a\u4e86\u4f7f\u5176\u53ef\u91cd\u7528\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u6cdb\u578b\uff1a<\/p>\n<pre>\/\/ \u6cdb\u578b\u51fd\u6570\npublic static &lt;T extends Number&gt; T add(T a, T b) {\n    return a.doubleValue() + b.doubleValue();\n}<\/pre>\n<p>\u73b0\u5728\uff0c\u8fd9\u4e2a\u51fd\u6570\u53ef\u4ee5\u8ba1\u7b97\u4efb\u4f55 Number \u5b50\u7c7b\u7684\u6570\u7684\u548c\uff0c\u4f8b\u5982\u6574\u6570\u3001\u6d6e\u70b9\u6570\u6216\u5927\u6570\u3002<\/p>\n<p><strong>\u7ed3\u8bba<\/strong><\/p>\n<p>\u5c3d\u7ba1\u5b58\u5728\u5c40\u9650\u6027\uff0cJava \u4ecd\u63d0\u4f9b\u4e86\u5b9e\u73b0\u51fd\u6570\u91cd\u7528\u6027\u7684\u65b9\u6cd5\u3002\u901a\u8fc7\u4f7f\u7528\u63a5\u53e3\u3001\u6cdb\u578b\u548c\u59d4\u6258\uff0c\u6211\u4eec\u53ef\u4ee5\u514b\u670d\u8fd9\u4e9b\u9650\u5236\u5e76\u521b\u5efa\u66f4\u53ef\u91cd\u7528\u7684\u4ee3\u7801\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u300a\u63a2\u7d22 Java \u51fd\u6570\u91cd\u7528\u6027\u7684\u5c40\u9650\u6027\u548c\u56f0\u96be\u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8ejava,\u51fd\u6570\u91cd\u7528\u7684\u8d44\u6599\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22 Java \u51fd\u6570\u91cd\u7528\u6027\u7684\u5c40\u9650&#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-202765","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202765","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=202765"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202765\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202765"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202765"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202765"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}