{"id":3072,"date":"2024-03-29T16:06:18","date_gmt":"2024-03-29T08:06:18","guid":{"rendered":"https:\/\/www.talktop.cn\/?p=3072"},"modified":"2024-12-15T20:07:42","modified_gmt":"2024-12-15T12:07:42","slug":"java-copyonwritearraylist%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/www.talktop.cn\/?p=3072","title":{"rendered":"Java CopyOnWriteArrayList\u8be6\u89e3"},"content":{"rendered":"\n<p>\u5728Java\u7f16\u7a0b\u4e2d\uff0c\u6709\u65f6\u5019\u6211\u4eec\u9700\u8981\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\u5b89\u5168\u5730\u64cd\u4f5c\u5217\u8868\u6570\u636e\u7ed3\u6784\u3002\u800cCopyOnWriteArrayList\u7c7b\u5c31\u662fJava\u5e76\u53d1\u5305\u4e2d\u63d0\u4f9b\u7684\u4e00\u79cd\u7ebf\u7a0b\u5b89\u5168\u7684List\u5b9e\u73b0\u3002\u672c\u6587\u5c06\u4ecb\u7ecdCopyOnWriteArrayList\u7684\u6838\u5fc3\u529f\u80fd\u3001\u7c7b\u7ee7\u627f\u5173\u7cfb\u3001\u5b9e\u73b0\u539f\u7406\uff0c\u5e76\u901a\u8fc7\u5177\u4f53\u793a\u4f8b\u6765\u8bf4\u660e\u5176\u7528\u6cd5\u548c\u9002\u7528\u573a\u666f\uff0c\u540c\u65f6\u63d0\u4f9b\u4e00\u4e9b\u6ce8\u610f\u4e8b\u9879\u3002<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">\u4e00\u3001CopyOnWriteArrayList\u7684\u6838\u5fc3\u529f\u80fd<\/h5>\n\n\n\n<p>CopyOnWriteArrayList\u662f\u4e00\u4e2a\u7ebf\u7a0b\u5b89\u5168\u7684\u52a8\u6001\u6570\u7ec4\u5217\u8868\uff0c\u5b83\u5177\u6709\u4ee5\u4e0b\u7279\u70b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u7ebf\u7a0b\u5b89\u5168\u6027<\/strong>\uff1aCopyOnWriteArrayList\u901a\u8fc7\u5728\u4fee\u6539\u64cd\u4f5c\uff08\u5982\u6dfb\u52a0\u3001\u5220\u9664\u3001\u4fee\u6539\u5143\u7d20\uff09\u65f6\u521b\u5efa\u5e95\u5c42\u6570\u7ec4\u7684\u526f\u672c\u6765\u5b9e\u73b0\u7ebf\u7a0b\u5b89\u5168\u3002\u8fd9\u610f\u5473\u7740\u5b83\u4e0d\u9700\u8981\u989d\u5916\u7684\u540c\u6b65\u63aa\u65bd\uff0c\u53ef\u4ee5\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e2d\u5b89\u5168\u5730\u8fdb\u884c\u8bfb\u5199\u64cd\u4f5c\u3002<\/li>\n\n\n\n<li><strong>\u5199\u65f6\u590d\u5236<\/strong>\uff1a\u6bcf\u5f53\u5bf9CopyOnWriteArrayList\u8fdb\u884c\u4fee\u6539\u64cd\u4f5c\u65f6\uff0c\u5b83\u90fd\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u6570\u7ec4\u526f\u672c\uff0c\u4fee\u6539\u5b8c\u6210\u540e\u5c06\u65b0\u6570\u7ec4\u66ff\u6362\u65e7\u6570\u7ec4\u3002\u8fd9\u79cd\u5199\u65f6\u590d\u5236\u7684\u673a\u5236\u4fdd\u8bc1\u4e86\u5e76\u53d1\u5b89\u5168\u6027\uff0c\u4f46\u4f1a\u5e26\u6765\u4e00\u5b9a\u7684\u5185\u5b58\u5f00\u9500\u3002<\/li>\n\n\n\n<li><strong>\u8fed\u4ee3\u5668\u5f31\u4e00\u81f4\u6027<\/strong>\uff1a\u7531\u4e8e\u5199\u65f6\u590d\u5236\u7684\u7279\u6027\uff0cCopyOnWriteArrayList\u7684\u8fed\u4ee3\u5668\u904d\u5386\u7684\u662f\u4e00\u4e2a\u4e0d\u53ef\u53d8\u7684\u526f\u672c\uff0c\u56e0\u6b64\u5728\u8fed\u4ee3\u8fc7\u7a0b\u4e2d\u4e0d\u4f1a\u629b\u51faConcurrentModificationException\u5f02\u5e38\uff0c\u4f46\u53ef\u80fd\u4f1a\u904d\u5386\u5230\u65e7\u7684\u6570\u636e\u3002<\/li>\n<\/ol>\n\n\n\n<h6 class=\"wp-block-heading\">\u7c7b\u7ee7\u627f\u5173\u7cfb<\/h6>\n\n\n\n<p>CopyOnWriteArrayList\u7c7b\u7684\u7ee7\u627f\u5173\u7cfb\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code has-white-color has-black-background-color has-text-color has-background has-link-color wp-elements-f5ab2c284f87f0bcf52d147f08210914\"><code>java.lang.Object\n    \u21b3 java.util.AbstractCollection&lt;E&gt;\n        \u21b3 java.util.AbstractList&lt;E&gt;\n            \u21b3 java.util.AbstractSequentialList&lt;E&gt;\n                \u21b3 java.util.concurrent.CopyOnWriteArrayList&lt;E&gt;<\/code><\/pre>\n\n\n\n<p>CopyOnWriteArrayList\u7ee7\u627f\u81eaAbstractSequentialList\u7c7b\uff0c\u800cAbstractSequentialList\u53c8\u7ee7\u627f\u81eaAbstractList\u7c7b\uff0c\u8fd9\u4e9b\u7c7b\u63d0\u4f9b\u4e86\u5217\u8868\u7684\u57fa\u672c\u529f\u80fd\u5b9e\u73b0\uff0c\u5982\u589e\u5220\u6539\u67e5\u7b49\u64cd\u4f5c\u3002<\/p>\n\n\n\n<h6 class=\"wp-block-heading\">\u5b9e\u73b0\u539f\u7406<\/h6>\n\n\n\n<p>CopyOnWriteArrayList\u7684\u5b9e\u73b0\u539f\u7406\u4e3b\u8981\u4f9d\u8d56\u4e8e\u5199\u65f6\u590d\u5236\u673a\u5236\u3002\u5f53\u5bf9\u5217\u8868\u8fdb\u884c\u4fee\u6539\u64cd\u4f5c\u65f6\uff0c\u4f1a\u5148\u590d\u5236\u5f53\u524d\u5217\u8868\u7684\u6570\u636e\u5230\u4e00\u4e2a\u65b0\u6570\u7ec4\u4e2d\uff0c\u7136\u540e\u5728\u65b0\u6570\u7ec4\u4e0a\u8fdb\u884c\u4fee\u6539\u64cd\u4f5c\uff0c\u6700\u540e\u7528\u65b0\u6570\u7ec4\u66ff\u6362\u65e7\u6570\u7ec4\u3002\u8fd9\u6837\u505a\u7684\u597d\u5904\u662f\u53ef\u4ee5\u5728\u4e0d\u52a0\u9501\u7684\u60c5\u51b5\u4e0b\u4fdd\u8bc1\u7ebf\u7a0b\u5b89\u5168\uff0c\u4f46\u7f3a\u70b9\u662f\u4f1a\u5e26\u6765\u4e00\u5b9a\u7684\u5185\u5b58\u5f00\u9500\u548c\u5199\u64cd\u4f5c\u7684\u5ef6\u8fdf\u3002<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">\u4e8c\u3001CopyOnWriteArrayList\u7684\u7528\u6cd5\u793a\u4f8b<\/h5>\n\n\n\n<h6 class=\"wp-block-heading\">\u793a\u4f8b\u4e00\uff1a\u8bfb\u591a\u5199\u5c11\u7684\u573a\u666f<\/h6>\n\n\n\n<pre class=\"wp-block-code has-white-color has-black-background-color has-text-color has-background has-link-color wp-elements-eb992925d6ae426af899d8d43c939c44\"><code>import java.util.concurrent.CopyOnWriteArrayList;\n\npublic class Example1 {\n    private static CopyOnWriteArrayList&lt;String&gt; list = new CopyOnWriteArrayList&lt;&gt;();\n\n    public static void main(String&#91;] args) {\n        \/\/ \u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u8bfb\u53d6\u5217\u8868\n        for (int i = 0; i &lt; 5; i++) {\n            new Thread(() -&gt; {\n                for (String str : list) {\n                    System.out.println(str);\n                }\n            }).start();\n        }\n\n        \/\/ \u5355\u4e2a\u7ebf\u7a0b\u5199\u5165\u5217\u8868\n        new Thread(() -&gt; {\n            list.add(\"Item\");\n        }).start();\n    }\n}<\/code><\/pre>\n\n\n\n<p>\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u8bfb\u53d6\u5217\u8868\u7684\u64cd\u4f5c\u4e0d\u4f1a\u5f71\u54cd\u5230\u5199\u5165\u5217\u8868\u7684\u64cd\u4f5c\uff0c\u56e0\u4e3a\u8bfb\u53d6\u64cd\u4f5c\u904d\u5386\u7684\u662f\u5217\u8868\u7684\u4e00\u4e2a\u5feb\u7167\u3002<\/p>\n\n\n\n<h6 class=\"wp-block-heading\">\u793a\u4f8b\u4e8c\uff1a\u4e8b\u4ef6\u76d1\u542c\u5668\u7ba1\u7406<\/h6>\n\n\n\n<pre class=\"wp-block-code has-white-color has-black-background-color has-text-color has-background has-link-color wp-elements-502e3630a0befbbec60bdeb52f221075\"><code>import java.util.concurrent.CopyOnWriteArrayList;\n\npublic class Example2 {\n    private static CopyOnWriteArrayList&lt;EventListener&gt; listeners = new CopyOnWriteArrayList&lt;&gt;();\n\n    public static void main(String&#91;] args) {\n        \/\/ \u6dfb\u52a0\u4e8b\u4ef6\u76d1\u542c\u5668\n        addListener(new EventListener() {\n            @Override\n            public void onEvent(Event event) {\n                System.out.println(\"Event received: \" + event);\n            }\n        });\n\n        \/\/ \u6a21\u62df\u4e8b\u4ef6\u89e6\u53d1\n        fireEvent(new Event(\"Example Event\"));\n    }\n\n    public static void addListener(EventListener listener) {\n        listeners.add(listener);\n    }\n\n    public static void fireEvent(Event event) {\n        for (EventListener listener : listeners) {\n            listener.onEvent(event);\n        }\n    }\n\n    static interface EventListener {\n        void onEvent(Event event);\n    }\n\n    static class Event {\n        private String name;\n\n        public Event(String name) {\n            this.name = name;\n        }\n\n        @Override\n        public String toString() {\n            return \"Event{\" +\n                    \"name='\" + name + '\\'' +\n                    '}';\n        }\n    }\n}<\/code><\/pre>\n\n\n\n<p>\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u591a\u4e2a\u4e8b\u4ef6\u76d1\u542c\u5668\u53ef\u4ee5\u5b89\u5168\u5730\u5e76\u53d1\u6dfb\u52a0\u548c\u89e6\u53d1\uff0c\u800c\u4e0d\u4f1a\u4ea7\u751f\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\u3002<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">\u4e09\u3001\u6ce8\u610f\u4e8b\u9879<\/h5>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u9002\u7528\u573a\u666f<\/strong>\uff1aCopyOnWriteArrayList\u9002\u7528\u4e8e\u8bfb\u591a\u5199\u5c11\u7684\u573a\u666f\uff0c\u4f8b\u5982\u4e8b\u4ef6\u76d1\u542c\u5668\u7ba1\u7406\u3001\u7f13\u5b58\u7b49\u3002<\/li>\n\n\n\n<li><strong>\u5185\u5b58\u5f00\u9500<\/strong>\uff1a\u7531\u4e8e\u6bcf\u6b21\u5199\u64cd\u4f5c\u90fd\u9700\u8981\u590d\u5236\u6574\u4e2a\u6570\u7ec4\uff0c\u56e0\u6b64\u5728\u6570\u636e\u91cf\u8f83\u5927\u65f6\u53ef\u80fd\u4f1a\u5e26\u6765\u8f83\u5927\u7684\u5185\u5b58\u5f00\u9500\u3002<\/li>\n\n\n\n<li><strong>\u8fed\u4ee3\u5668\u4e00\u81f4\u6027<\/strong>\uff1a\u7531\u4e8e\u8fed\u4ee3\u5668\u904d\u5386\u7684\u662f\u4e00\u4e2a\u4e0d\u53ef\u53d8\u7684\u526f\u672c\uff0c\u56e0\u6b64\u5728\u8fed\u4ee3\u8fc7\u7a0b\u4e2d\u4e0d\u4f1a\u53cd\u6620\u51fa\u5176\u4ed6\u7ebf\u7a0b\u7684\u4fee\u6539\u3002<\/li>\n\n\n\n<li><strong>\u6027\u80fd\u5f71\u54cd<\/strong>\uff1a\u5199\u64cd\u4f5c\u7684\u5ef6\u8fdf\u53ef\u80fd\u4f1a\u5f71\u54cd\u6027\u80fd\uff0c\u56e0\u6b64\u4e0d\u9002\u5408\u5bf9\u5199\u64cd\u4f5c\u6709\u4e25\u683c\u8981\u6c42\u7684\u573a\u666f\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u7684\u6765\u8bf4\uff0cCopyOnWriteArrayList\u662f\u4e00\u4e2a\u7b80\u5355\u6613\u7528\u4e14\u7ebf\u7a0b\u5b89\u5168\u7684\u5217\u8868\u5b9e\u73b0\uff0c\u4f46\u5728\u9009\u62e9\u4f7f\u7528\u65f6\u9700\u8981\u6839\u636e\u5177\u4f53\u573a\u666f\u6743\u8861\u5176\u4f18\u7f3a\u70b9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728Java\u7f16\u7a0b\u4e2d\uff0c\u6709\u65f6\u5019\u6211\u4eec\u9700\u8981\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\u5b89\u5168\u5730\u64cd\u4f5c\u5217\u8868\u6570\u636e\u7ed3\u6784\u3002\u800cCopyOnWriteArrayLis [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[59],"tags":[16],"class_list":["post-3072","post","type-post","status-publish","format-standard","hentry","category-59","tag-java"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Java CopyOnWriteArrayList\u8be6\u89e3<\/title>\n<meta name=\"description\" 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