{"id":202822,"date":"2025-05-22T11:51:39","date_gmt":"2025-05-22T03:51:39","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202822\/"},"modified":"2025-05-22T11:51:39","modified_gmt":"2025-05-22T03:51:39","slug":"java-%e5%87%bd%e6%95%b0%e5%bc%8f%e7%bc%96%e7%a8%8b%e4%b8%ad-typeclass-%e7%9a%84%e4%bd%9c%e7%94%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202822\/","title":{"rendered":"Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d typeclass \u7684\u4f5c\u7528"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d typeclass \u7684\u4f5c\u7528<\/h1>\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\">\u300aJava \u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d typeclass \u7684\u4f5c\u7528\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>TypeClass \u901a\u8fc7\u62bd\u8c61\u901a\u7528\u64cd\u4f5c\u5e76\u4f7f\u7528\u7c7b\u578b\u5b89\u5168\u63a5\u53e3\u5b9e\u73b0\uff0c\u5728 Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\u53d1\u6325\u4f5c\u7528\uff1a\u5bf9\u4e0d\u540c\u7c7b\u578b\u5bf9\u8c61\u6267\u884c\u76f8\u540c\u64cd\u4f5c\u3002\u62bd\u8c61\u901a\u7528\u7b97\u6cd5\u6216\u6a21\u5f0f\u3002\u7075\u6d3b\u6269\u5c55\u73b0\u6709\u529f\u80fd\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729946067671ce1d310f9f.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d TypeClass \u7684\u4f5c\u7528<\/strong><\/p>\n<p><strong>\u7b80\u4ecb<\/strong><\/p>\n<p>TypeClass \u662f\u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\u7684\u4e00\u9879\u9ad8\u7ea7\u6280\u672f\uff0c\u5b83\u5141\u8bb8\u6211\u4eec\u4ee5\u4e00\u79cd\u7c7b\u578b\u5b89\u5168\u4e14\u53ef\u6269\u5c55\u7684\u65b9\u5f0f\u62bd\u8c61\u901a\u7528\u64cd\u4f5c\u3002\u901a\u8fc7\u4f7f\u7528 TypeClass\uff0c\u6211\u4eec\u53ef\u4ee5\u907f\u514d\u5728\u4ee3\u7801\u4e2d\u91cd\u590d\u7f16\u5199\u7c7b\u578b\u68c0\u67e5\u903b\u8f91\uff0c\u4ece\u800c\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027\u3001\u53ef\u8bfb\u6027\u548c\u53ef\u6269\u5c55\u6027\u3002<\/p>\n<p><strong>\u4f5c\u7528<\/strong><\/p>\n<p>TypeClass \u4e3b\u8981\u7528\u4e8e\u4ee5\u4e0b\u573a\u666f\uff1a<\/p>\n<ul>\n<li>\u5bf9\u4e0d\u540c\u7c7b\u578b\u7684\u5bf9\u8c61\u8fdb\u884c\u76f8\u540c\u64cd\u4f5c<\/li>\n<li>\u62bd\u8c61\u51fa\u901a\u7528\u7b97\u6cd5\u6216\u6a21\u5f0f<\/li>\n<li>\u7075\u6d3b\u5730\u6269\u5c55\u73b0\u6709\u529f\u80fd<\/li>\n<\/ul>\n<p><strong>Java \u4e2d\u7684 Typeclass<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0cTypeClass \u901a\u5e38\u4f7f\u7528\u63a5\u53e3\u6765\u5b9e\u73b0\u3002\u6211\u4eec\u5b9a\u4e49\u4e00\u4e2a\u63a5\u53e3\uff0c\u5305\u542b\u8981\u62bd\u8c61\u7684\u64cd\u4f5c\u7b7e\u540d\uff0c\u7136\u540e\u4e3a\u4e0d\u540c\u7684\u7c7b\u578b\u5b9e\u73b0\u8be5\u63a5\u53e3\u3002<\/p>\n<p><strong>\u5b9e\u6218\u6848\u4f8b\uff1a\u7c7b\u578b\u5b89\u5168\u6bd4\u8f83\u5668<\/strong><\/p>\n<p>\u8003\u8651\u4e00\u4e2a\u6bd4\u8f83\u4e24\u4e2a\u5bf9\u8c61\u7684\u6bd4\u8f83\u5668\u63a5\u53e3\uff1a<\/p>\n<pre>interface Comparator&lt;T&gt; {\n    int compare(T o1, T o2);\n}<\/pre>\n<p>\u73b0\u5728\uff0c\u6211\u4eec\u60f3\u5bf9\u591a\u4e2a\u7c7b\u578b\u4f7f\u7528\u8fd9\u4e2a\u6bd4\u8f83\u5668\uff0c\u4f8b\u5982 <code>Integer<\/code> \u548c <code>String<\/code>\u3002\u4f20\u7edf\u7684\u65b9\u6cd5\u662f\u4e3a\u6bcf\u4e2a\u7c7b\u578b\u7f16\u5199\u81ea\u5df1\u7684\u6bd4\u8f83\u5668\u5b9e\u73b0\uff1a<\/p>\n<pre>class IntegerComparator implements Comparator&lt;Integer&gt; {\n    @Override\n    public int compare(Integer o1, Integer o2) {\n        return o1 - o2;\n    }\n}\n\nclass StringComparator implements Comparator&lt;String&gt; {\n    @Override\n    public int compare(String o1, String o2) {\n        return o1.compareTo(o2);\n    }\n}<\/pre>\n<p>\u8fd9\u4f1a\u4ea7\u751f\u5927\u91cf\u91cd\u590d\u7684\u4ee3\u7801\u3002\u4f7f\u7528 TypeClass\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u6bd4\u8f83\u64cd\u4f5c\u62bd\u8c61\u51fa\u6765\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre>interface Comparable&lt;T&gt; {\n    int compareTo(T o);\n}<\/pre>\n<p>\u7136\u540e\uff0c\u6211\u4eec\u4e3a <code>Integer<\/code> \u548c <code>String<\/code> \u5b9e\u73b0\u8be5\u63a5\u53e3\uff1a<\/p>\n<pre>class IntegerComparable implements Comparable&lt;Integer&gt; {\n    @Override\n    public int compareTo(Integer o) {\n        return this - o;\n    }\n}\n\nclass StringComparable implements Comparable&lt;String&gt; {\n    @Override\n    public int compareTo(String o) {\n        return this.compareTo(o);\n    }\n}<\/pre>\n<p>\u73b0\u5728\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 <code>Comparable<\/code> \u63a5\u53e3\u7684\u7c7b\u578b\u5b89\u5168\u6027\u6bd4\u8f83 <code>Integer<\/code> \u548c <code>String<\/code>\uff1a<\/p>\n<pre>IntegerComparable ic = new IntegerComparable();\nint result = ic.compareTo(10);<\/pre>\n<p>\u8fd9\u79cd\u65b9\u6cd5\u63d0\u4f9b\u4e86\u7c7b\u578b\u5b89\u5168\u6027\uff0c\u540c\u65f6\u907f\u514d\u4e86\u91cd\u590d\u7684\u4ee3\u7801\u3002<\/p>\n<p>\u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300aJava \u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d typeclass \u7684\u4f5c\u7528\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8\u516c\u4f17\u53f7\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d type&#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-202822","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202822","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=202822"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202822\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202822"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202822"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202822"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}