{"id":202745,"date":"2025-05-22T10:50:15","date_gmt":"2025-05-22T02:50:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202745\/"},"modified":"2025-05-22T10:50:15","modified_gmt":"2025-05-22T02:50:15","slug":"%e9%81%bf%e5%85%8djava%e5%87%bd%e6%95%b0%e4%b8%ad%e5%86%85%e5%ad%98%e6%b6%88%e8%80%97%e5%b8%b8%e8%a7%81%e9%99%b7%e9%98%b1","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202745\/","title":{"rendered":"\u907f\u514dJava\u51fd\u6570\u4e2d\u5185\u5b58\u6d88\u8017\u5e38\u89c1\u9677\u9631"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u907f\u514dJava\u51fd\u6570\u4e2d\u5185\u5b58\u6d88\u8017\u5e38\u89c1\u9677\u9631<\/h1>\n<p>\u5728IT\u884c\u4e1a\u8fd9\u4e2a\u53d1\u5c55\u66f4\u65b0\u901f\u5ea6\u5f88\u5feb\u7684\u884c\u4e1a\uff0c\u53ea\u6709\u4e0d\u505c\u6b62\u7684\u5b66\u4e60\uff0c\u624d\u4e0d\u4f1a\u88ab\u884c\u4e1a\u6240\u6dd8\u6c70\u3002\u5982\u679c\u4f60\u662f\u6587\u7ae0\u5b66\u4e60\u8005\uff0c\u90a3\u4e48\u672c\u6587\u300a\u907f\u514dJava\u51fd\u6570\u4e2d\u5185\u5b58\u6d88\u8017\u5e38\u89c1\u9677\u9631\u300b\u5c31\u5f88\u9002\u5408\u4f60\uff01\u672c\u7bc7\u5185\u5bb9\u4e3b\u8981\u5305\u62ec##content_title##\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01<\/p>\n<p>\u4e3a\u4e86\u907f\u514d Java \u51fd\u6570\u4e2d\u7684\u5185\u5b58\u6d88\u8017\u9677\u9631\uff0c\u8bf7\u9075\u5faa\u4ee5\u4e0b\u6700\u4f73\u5b9e\u8df5\uff1a\u590d\u7528\u4e34\u65f6\u5bf9\u8c61\u3002\u907f\u514d\u4fee\u6539\u5916\u90e8\u5bf9\u8c61\u3002\u4f18\u5148\u4f7f\u7528\u4e0d\u53ef\u53d8\u5bf9\u8c61\u3002\u8c28\u614e\u7ba1\u7406\u96c6\u5408\u5927\u5c0f\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729938442671cc40a5409c.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u907f\u514d Java \u51fd\u6570\u4e2d\u5185\u5b58\u6d88\u8017\u5e38\u89c1\u9677\u9631<\/strong><\/p>\n<p><strong>\u5f15\u8a00<\/strong><\/p>\n<p>Java \u4e2d\u7684\u5185\u5b58\u7ba1\u7406\u81f3\u5173\u91cd\u8981\uff0c\u5c24\u5176\u662f\u5728\u51fd\u6570\u4e2d\u3002\u4e0d\u826f\u7684\u5185\u5b58\u7ba1\u7406\u5b9e\u8df5\u4f1a\u5bfc\u81f4\u5185\u5b58\u6cc4\u6f0f\u548c\u5e94\u7528\u7a0b\u5e8f\u6027\u80fd\u4e0b\u964d\u3002\u672c\u6587\u5c06\u63a2\u8ba8\u5e38\u89c1\u5185\u5b58\u6d88\u8017\u9677\u9631\u5e76\u63d0\u4f9b\u5b9e\u6218\u6848\u4f8b\u6765\u9610\u8ff0\u6700\u4f73\u5b9e\u8df5\u3002<\/p>\n<p><strong>\u5e38\u89c1\u7684\u9677\u9631<\/strong><\/p>\n<ul>\n<li><strong>\u4e34\u65f6\u5bf9\u8c61\u521b\u5efa\u8fc7\u591a<\/strong>\uff1a\u53cd\u590d\u521b\u5efa\u548c\u4e22\u5f03\u4e34\u65f6\u5bf9\u8c61\u4f1a\u589e\u52a0 GC \u8d1f\u62c5\u548c\u5185\u5b58\u6d88\u8017\u3002<\/li>\n<li><strong>\u6301\u6709\u5173\u8282\u53d8\u91cf<\/strong>\uff1a\u5c06\u5916\u90e8\u5bf9\u8c61\u4f5c\u4e3a\u5c40\u90e8\u53d8\u91cf\u6301\u6709\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5bf9\u8c61\u4fdd\u6301\u5b58\u6d3b\uff0c\u5373\u4f7f\u5b83\u4e0d\u518d\u9700\u8981\u4e86\u3002<\/li>\n<li><strong>\u5ffd\u7565\u4e0d\u53ef\u53d8\u5bf9\u8c61<\/strong>\uff1a\u521b\u5efa\u4e0d\u53ef\u53d8\u5bf9\u8c61\u5e76\u4fee\u6539\u5176\u5185\u5bb9\u4f1a\u5bfc\u81f4\u4e0d\u5fc5\u8981\u7684\u526f\u672c\uff0c\u589e\u52a0\u5185\u5b58\u6d88\u8017\u3002<\/li>\n<li><strong>\u8fc7\u5ea6\u4f7f\u7528\u96c6\u5408<\/strong>\uff1a\u96c6\u5408\u53ef\u4ee5\u65b9\u4fbf\u5730\u5b58\u50a8\u5bf9\u8c61\uff0c\u4f46\u8fc7\u5ea6\u4f7f\u7528\u53ef\u80fd\u5bfc\u81f4\u5185\u5b58\u6cc4\u6f0f\uff0c\u56e0\u4e3a\u5bf9\u8c61\u4ecd\u4f1a\u4fdd\u7559\u5728\u96c6\u5408\u4e2d\u3002<\/li>\n<\/ul>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p>\u8003\u8651\u4ee5\u4e0b Java \u51fd\u6570\uff1a<\/p>\n<pre>public void example(List&lt;Integer&gt; list) {\n    for (Integer i : list) {\n        \/\/ \u521b\u5efa\u4e34\u65f6\u5bf9\u8c61\n        String s = i.toString();\n        \/\/ \u6301\u6709\u5173\u8282\u53d8\u91cf - \u5982\u679c\u5f15\u7528\u4e86\u540c\u4e00\u5217\u8868\uff0c\u5219\u4e0d\u4f1a\u91ca\u653e\n        list.remove(i);\n    }\n}<\/pre>\n<p>\u8fd9\u4e2a\u51fd\u6570\u5b58\u5728\u51e0\u4e2a\u9677\u9631\uff1a\u5b83\u53cd\u590d\u521b\u5efa <code>String<\/code> \u5bf9\u8c61\uff0c\u6301\u6709\u5173\u8282\u53d8\u91cf <code>list<\/code>\uff0c\u5e76\u4e14\u6ca1\u6709\u8003\u8651 <code>list<\/code> \u96c6\u5408\u7684\u5927\u5c0f\u3002<\/p>\n<p><strong>\u6700\u4f73\u5b9e\u8df5<\/strong><\/p>\n<p>\u4e3a\u4e86\u907f\u514d\u5185\u5b58\u6d88\u8017\u9677\u9631\uff0c\u8bf7\u9075\u5faa\u4ee5\u4e0b\u6700\u4f73\u5b9e\u8df5\uff1a<\/p>\n<ul>\n<li>\u5c3d\u53ef\u80fd\u590d\u7528\u4e34\u65f6\u5bf9\u8c61\uff0c\u4f8b\u5982 <code>StringBuilder<\/code>\u3002<\/li>\n<li>\u907f\u514d\u5728\u51fd\u6570\u4e2d\u4fee\u6539\u5916\u90e8\u5bf9\u8c61\uff0c\u4f7f\u7528\u9632\u5fa1\u6027\u590d\u5236\u3002<\/li>\n<li>\u4f18\u5148\u4f7f\u7528\u4e0d\u53ef\u53d8\u5bf9\u8c61\u5e76\u907f\u514d\u5bf9\u5176\u8fdb\u884c\u4fee\u6539\u3002<\/li>\n<li>\u4ed4\u7ec6\u7ba1\u7406\u96c6\u5408\u5927\u5c0f\u5e76\u5b9a\u671f\u6e05\u7406\u672a\u4f7f\u7528\u7684\u5bf9\u8c61\u3002<\/li>\n<\/ul>\n<p><strong>\u901a\u8fc7\u4fee\u590d\u4ee3\u7801\u793a\u4f8b<\/strong><\/p>\n<p>\u901a\u8fc7\u5e94\u7528\u6700\u4f73\u5b9e\u8df5\uff0c\u6211\u4eec\u53ef\u4ee5\u4fee\u590d\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre>public void example(List&lt;Integer&gt; list) {\n    StringBuilder sb = new StringBuilder();\n    List&lt;Integer&gt; newList = new ArrayList&lt;&gt;();\n    for (Integer i : list) {\n        \/\/ \u590d\u7528 StringBuilder\n        sb.append(i).append(\",\");\n        \/\/ \u9632\u5fa1\u6027\u590d\u5236\n        newList.add(i);\n    }\n    String s = sb.toString();\n    \/\/ \u4f7f\u7528\u65b0\u5217\u8868\n    list = newList;\n}<\/pre>\n<p>\u6b64\u4fee\u6539\u4fee\u590d\u4e86\u51fd\u6570\u4e2d\u7684\u6240\u6709\u9677\u9631\uff0c\u5e76\u6709\u6548\u5730\u9632\u6b62\u4e86\u5185\u5b58\u6d88\u8017\u95ee\u9898\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u300a\u907f\u514dJava\u51fd\u6570\u4e2d\u5185\u5b58\u6d88\u8017\u5e38\u89c1\u9677\u9631\u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8ejava,\u5185\u5b58\u6cc4\u6f0f\u7684\u8d44\u6599\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u907f\u514dJava\u51fd\u6570\u4e2d\u5185\u5b58\u6d88\u8017\u5e38\u89c1\u9677&#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-202745","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202745","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=202745"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202745\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202745"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202745"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202745"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}