{"id":47299,"date":"2024-12-02T12:32:34","date_gmt":"2024-12-02T04:32:34","guid":{"rendered":"https:\/\/fwq.ai\/blog\/47299\/"},"modified":"2024-12-02T12:32:34","modified_gmt":"2024-12-02T04:32:34","slug":"java%e5%87%bd%e6%95%b0%e5%bc%8f%e7%bc%96%e7%a8%8b%e4%b8%ad%e7%9a%84%e9%ab%98%e9%98%b6%e5%87%bd%e6%95%b0%e6%9c%89%e5%93%aa%e4%ba%9b%e7%b1%bb%e5%9e%8b%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/47299\/","title":{"rendered":"Java\u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\u7684\u9ad8\u9636\u51fd\u6570\u6709\u54ea\u4e9b\u7c7b\u578b\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>Java\u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\u7684\u9ad8\u9636\u51fd\u6570\u6709\u54ea\u4e9b\u7c7b\u578b\uff1f<\/h1>\n<p>\u600e\u4e48\u5165\u95e8\u6587\u7ae0\u7f16\u7a0b\uff1f\u9700\u8981\u5b66\u4e60\u54ea\u4e9b\u77e5\u8bc6\u70b9\uff1f\u8fd9\u662f\u65b0\u624b\u4eec\u521a\u63a5\u89e6\u7f16\u7a0b\u65f6\u5e38\u89c1\u7684\u95ee\u9898\uff1b\u4e0b\u9762\u7c73\u4e91\u5c31\u6765\u7ed9\u5927\u5bb6\u6574\u7406\u5206\u4eab\u4e00\u4e9b\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u80fd\u591f\u7ed9\u521d\u5b66\u8005\u4e00\u4e9b\u5e2e\u52a9\u3002\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u4ecb\u7ecd\u300aJava\u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\u7684\u9ad8\u9636\u51fd\u6570\u6709\u54ea\u4e9b\u7c7b\u578b\uff1f\u300b\uff0c\u6d89\u53ca\u5230\uff0c\u6709\u9700\u8981\u7684\u53ef\u4ee5\u6536\u85cf\u4e00\u4e0b<\/p>\n<p>Java \u4e2d\u7684\u9ad8\u9636\u51fd\u6570\u7c7b\u578b\u6709\u4e24\u79cd\uff1a\u63a5\u53d7\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570\u7684\u7c7b\u578b\uff08Predicate\u3001Function\u3001Consumer\uff09\u548c\u8fd4\u56de\u51fd\u6570\u7684\u7c7b\u578b\uff08Supplier\u3001Function\uff09\u3002\u5b83\u4eec\u7528\u4e8e\u62bd\u8c61\u3001\u4ee3\u7801\u91cd\u7528\u548c\u589e\u5f3a\u53ef\u7ef4\u62a4\u6027\uff0c\u4f8b\u5982\u901a\u8fc7\u4f20\u9012\u6bd4\u8f83\u5668\u5bf9\u5217\u8868\u8fdb\u884c\u6392\u5e8f\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241027\/1729992822671d98768cf4c.jpg\" class=\"aligncenter\" title=\"Java\u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\u7684\u9ad8\u9636\u51fd\u6570\u6709\u54ea\u4e9b\u7c7b\u578b\uff1f\u63d2\u56fe\" alt=\"Java\u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\u7684\u9ad8\u9636\u51fd\u6570\u6709\u54ea\u4e9b\u7c7b\u578b\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\u7684\u9ad8\u9636\u51fd\u6570\u7c7b\u578b<\/strong><\/p>\n<p>\u5728 Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\uff0c\u9ad8\u9636\u51fd\u6570\u662f\u6307\u63a5\u53d7\u53e6\u4e00\u4e2a\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570\u6216\u8fd4\u56de\u4e00\u4e2a\u51fd\u6570\u7684\u51fd\u6570\u3002\u5b83\u4eec\u5728\u62bd\u8c61\u3001\u4ee3\u7801\u91cd\u7528\u548c\u589e\u5f3a\u53ef\u7ef4\u62a4\u6027\u65b9\u9762\u53d1\u6325\u7740\u81f3\u5173\u91cd\u8981\u7684\u4f5c\u7528\u3002<\/p>\n<p><strong>\u7c7b\u578b<\/strong><\/p>\n<p><strong>1. \u51fd\u6570\u63a5\u53d7\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570<\/strong><\/p>\n<ul>\n<li><code>Predicate<\/code>: \u5e03\u5c14\u503c\u5224\u65ad\u51fd\u6570\uff0c\u5982 <code>Predicate&lt;Integer&gt; odd = i -&gt; i % 2 != 0<\/code><\/li>\n<li><code>Function<\/code>: \u63a5\u53d7\u4e00\u4e2a\u503c\u5e76\u8fd4\u56de\u53e6\u4e00\u4e2a\u503c\uff0c\u5982 <code>Function&lt;Integer, String&gt; intToString = i -&gt; String.valueOf(i)<\/code><\/li>\n<li><code>Consumer<\/code>: \u63a5\u53d7\u4e00\u4e2a\u503c\u4f46\u4e0d\u8fd4\u56de\u4efb\u4f55\u7ed3\u679c\uff0c\u5982 <code>Consumer&lt;Integer&gt; print = System.out::println<\/code><\/li>\n<\/ul>\n<p><strong>2. \u51fd\u6570\u8fd4\u56de\u51fd\u6570<\/strong><\/p>\n<ul>\n<li><code>Supplier<\/code>: \u65e0\u53c2\u51fd\u6570\uff0c\u7528\u4e8e\u521b\u5efa\u5bf9\u8c61\uff0c\u5982 <code>Supplier&lt;Random&gt; randomSupplier = () -&gt; new Random()<\/code><\/li>\n<li><code>Function<\/code>: \u63a5\u53d7\u4e00\u4e2a\u53c2\u6570\u5e76\u8fd4\u56de\u51fd\u6570\uff0c\u5982 <code>Function&lt;Integer, Function&lt;Integer, Integer&gt;&gt; add = i -&gt; (j -&gt; i + j)<\/code><\/li>\n<\/ul>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p>\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u5b57\u7b26\u4e32\u5217\u8868\uff0c\u9700\u8981\u6839\u636e\u957f\u5ea6\u5bf9\u5176\u8fdb\u884c\u6392\u5e8f\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 <code>Collections.sort<\/code> \u65b9\u6cd5\uff0c\u5e76\u4f20\u9012\u4e00\u4e2a\u6bd4\u8f83\u5668\uff0c\u8be5\u6bd4\u8f83\u5668\u4f7f\u7528 <code>Comparator<\/code> \u63a5\u53e3\u4e2d\u63d0\u4f9b\u7684 <code>compare<\/code> \u51fd\u6570\uff1a<\/p>\n<pre>List&lt;String&gt; words = List.of(\"apple\", \"banana\", \"orange\", \"grape\", \"pineapple\");\nCollections.sort(words, Comparator.comparing(String::length));<\/pre>\n<p><code>Comparator.comparing<\/code> \u51fd\u6570\u662f\u4e00\u4e2a\u9ad8\u9636\u51fd\u6570\uff0c\u5b83\u63a5\u53d7\u4e00\u4e2a\u83b7\u53d6\u5bf9\u8c61\u7684\u5c5e\u6027\u7684\u51fd\u6570\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u6bd4\u8f83\u5668\uff0c\u8be5\u6bd4\u8f83\u5668\u6839\u636e\u8be5\u5c5e\u6027\u5bf9\u5bf9\u8c61\u8fdb\u884c\u6392\u5e8f\u3002\u5b83\u5728\u4e0d\u9700\u8981\u5b9e\u73b0\u6574\u4e2a <code>Comparator<\/code> \u63a5\u53e3\u7684\u60c5\u51b5\u4e0b\u63d0\u4f9b\u4e86\u7b80\u6d01\u76f4\u89c2\u7684\u8bed\u6cd5\u3002<\/p>\n<p>\u7406\u89e3\u5e76\u5229\u7528\u9ad8\u9636\u51fd\u6570\u53ef\u4ee5\u5927\u5927\u63d0\u9ad8 Java \u51fd\u6570\u5f0f\u7a0b\u5e8f\u7684\u8868\u8fbe\u80fd\u529b\u548c\u7075\u6d3b\u6027\u3002<\/p>\n<p>\u5230\u8fd9\u91cc\uff0c\u6211\u4eec\u4e5f\u5c31\u8bb2\u5b8c\u4e86\u300aJava\u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\u7684\u9ad8\u9636\u51fd\u6570\u6709\u54ea\u4e9b\u7c7b\u578b\uff1f\u300b\u7684\u5185\u5bb9\u4e86\u3002\u4e2a\u4eba\u8ba4\u4e3a\uff0c\u57fa\u7840\u77e5\u8bc6\u7684\u5b66\u4e60\u548c\u5de9\u56fa\uff0c\u662f\u4e3a\u4e86\u66f4\u597d\u7684\u5c06\u5176\u8fd0\u7528\u5230\u9879\u76ee\u4e2d\uff0c\u6b22\u8fce\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff0c\u5e26\u4f60\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u51fd\u6570\u5f0f\u7f16\u7a0b,\u9ad8\u9636\u51fd\u6570\u7684\u77e5\u8bc6\u70b9\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java\u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\u7684\u9ad8\u9636\u51fd\u6570\u6709\u54ea\u4e9b\u7c7b\u578b\uff1f \u600e\u4e48\u5165\u95e8\u6587\u7ae0\u7f16\u7a0b\uff1f\u9700\u8981\u5b66\u4e60\u54ea\u4e9b\u77e5\u8bc6\u70b9\uff1f\u8fd9\u662f\u65b0\u624b\u4eec\u521a\u63a5\u89e6\u7f16\u7a0b\u65f6\u5e38\u89c1\u7684\u95ee\u9898\uff1b\u4e0b\u9762\u7c73\u4e91\u5c31\u6765\u7ed9\u5927\u5bb6\u6574\u7406\u5206\u4eab\u4e00\u4e9b\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u80fd\u591f\u7ed9\u521d\u5b66\u8005\u4e00\u4e9b\u5e2e\u52a9\u3002\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u4ecb\u7ecd\u300aJava\u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\u7684\u9ad8\u9636\u51fd\u6570\u6709\u54ea\u4e9b\u7c7b\u578b\uff1f\u300b\uff0c\u6d89\u53ca\u5230\uff0c\u6709\u9700\u8981\u7684\u53ef\u4ee5\u6536\u85cf\u4e00\u4e0b Java \u4e2d\u7684\u9ad8\u9636\u51fd\u6570\u7c7b\u578b\u6709\u4e24\u79cd\uff1a\u63a5\u53d7\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570\u7684\u7c7b\u578b\uff08Predicate\u3001Function\u3001Consumer\uff09\u548c\u8fd4\u56de\u51fd\u6570\u7684\u7c7b\u578b\uff08Supplier\u3001Function\uff09\u3002\u5b83\u4eec\u7528\u4e8e\u62bd\u8c61\u3001\u4ee3\u7801\u91cd\u7528\u548c\u589e\u5f3a\u53ef\u7ef4\u62a4\u6027\uff0c\u4f8b\u5982\u901a\u8fc7\u4f20\u9012\u6bd4\u8f83\u5668\u5bf9\u5217\u8868\u8fdb\u884c\u6392\u5e8f\u3002 Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\u7684\u9ad8\u9636\u51fd\u6570\u7c7b\u578b \u5728 Java \u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\uff0c\u9ad8\u9636\u51fd\u6570\u662f\u6307\u63a5\u53d7\u53e6\u4e00\u4e2a\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570\u6216\u8fd4\u56de\u4e00\u4e2a\u51fd\u6570\u7684\u51fd\u6570\u3002\u5b83\u4eec\u5728\u62bd\u8c61\u3001\u4ee3\u7801\u91cd\u7528\u548c\u589e\u5f3a\u53ef\u7ef4\u62a4\u6027\u65b9\u9762\u53d1\u6325\u7740\u81f3\u5173\u91cd\u8981\u7684\u4f5c\u7528\u3002 \u7c7b\u578b 1. \u51fd\u6570\u63a5\u53d7\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570 Predicate: \u5e03\u5c14\u503c\u5224\u65ad\u51fd\u6570\uff0c\u5982 Predicate&lt;Integer&gt; odd = i -&gt; i % 2 != 0 Function: \u63a5\u53d7\u4e00\u4e2a\u503c\u5e76\u8fd4\u56de\u53e6\u4e00\u4e2a\u503c\uff0c\u5982 Function&lt;Integer, String&gt; intToString = i -&gt; String.valueOf(i) Consumer: \u63a5\u53d7\u4e00\u4e2a\u503c\u4f46\u4e0d\u8fd4\u56de\u4efb\u4f55\u7ed3\u679c\uff0c\u5982 Consumer&lt;Integer&gt; print = System.out::println 2. \u51fd\u6570\u8fd4\u56de\u51fd\u6570 Supplier: \u65e0\u53c2\u51fd\u6570\uff0c\u7528\u4e8e\u521b\u5efa\u5bf9\u8c61\uff0c\u5982 Supplier&lt;Random&gt; randomSupplier = () -&gt; new Random() Function: \u63a5\u53d7\u4e00\u4e2a\u53c2\u6570\u5e76\u8fd4\u56de\u51fd\u6570\uff0c\u5982 Function&lt;Integer, Function&lt;Integer, Integer&gt;&gt; [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-47299","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47299","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=47299"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47299\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=47299"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=47299"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=47299"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}