{"id":315599,"date":"2024-05-21T00:04:54","date_gmt":"2024-05-20T16:04:54","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/315599.html"},"modified":"2024-05-21T00:05:15","modified_gmt":"2024-05-20T16:05:15","slug":"java-%e9%a1%b9%e7%9b%ae%e4%bb%a3%e7%a0%81%e5%ae%9e%e7%8e%b0%e5%a4%9a%e7%ba%bf%e7%a8%8b%e7%9a%84%e6%96%b9%e5%bc%8f%e6%9c%89%e5%93%aa%e4%ba%9b-3","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/315599.html","title":{"rendered":"java \u9879\u76ee\u4ee3\u7801\u5b9e\u73b0\u591a\u7ebf\u7a0b\u7684\u65b9\u5f0f\u6709\u54ea\u4e9b"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/27035453\/5bce8a9d-73c8-415f-b0a0-8c6aa309c72a.webp\" alt=\"java \u9879\u76ee\u4ee3\u7801\u5b9e\u73b0\u591a\u7ebf\u7a0b\u7684\u65b9\u5f0f\u6709\u54ea\u4e9b\" 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class=\"language-java\">public class MyThread extends Thread {<\/p>\n<p>    public void run() {<\/p>\n<p>        \/\/ \u7ebf\u7a0b\u6267\u884c\u7684\u4efb\u52a1<\/p>\n<p>    }<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ul>\n<li>\u4f7f\u7528\u7ebf\u7a0b<\/li>\n<\/ul>\n<p><pre><code class=\"language-java\">MyThread myThread = new MyThread();<\/p>\n<p>myThread.start(); \/\/ \u5f00\u59cb\u6267\u884c\u7ebf\u7a0b<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p><strong>\u6b64\u65b9\u6cd5\u7684\u5c40\u9650\u6027\u5728\u4e8eJava\u4e0d\u652f\u6301\u591a\u91cd\u7ee7\u627f\uff0c\u56e0\u6b64\uff0c\u5982\u679c\u4f60\u7684\u7c7b\u5df2\u7ecf\u7ee7\u627f\u4e86\u53e6\u4e00\u4e2a\u7c7b\uff0c\u5c31\u65e0\u6cd5\u518d\u7ee7\u627fThread\u7c7b\u3002<\/strong><\/p>\n<\/p>\n<p><h3>\u4e8c\u3001\u5b9e\u73b0RUNNABLE\u63a5\u53e3<\/h3>\n<\/p>\n<p><p>\u5b9e\u73b0Runnable\u63a5\u53e3\u662f\u53e6\u4e00\u79cd\u5e38\u89c1\u7684\u591a\u7ebf\u7a0b\u5b9e\u73b0\u65b9\u5f0f\u3002\u4e0d\u540c\u4e8e\u76f4\u63a5\u7ee7\u627fThread\u7c7b\uff0c\u8fd9\u79cd\u65b9\u5f0f\u8981\u6c42\u5b9e\u73b0\u4e00\u4e2arun\u65b9\u6cd5\uff0c\u7136\u540e\u5c06Runnable\u5b9e\u4f8b\u4f20\u9012\u7ed9\u4e00\u4e2aThread\u5b9e\u4f8b\uff0c\u6765\u542f\u52a8\u65b0\u7ebf\u7a0b\u3002<\/p>\n<\/p>\n<ul>\n<li>\u521b\u5efaRunnable\u5b9e\u73b0\u7c7b<\/li>\n<\/ul>\n<p><pre><code class=\"language-java\">public class MyRunnable implements Runnable {<\/p>\n<p>    public void run() {<\/p>\n<p>        \/\/ \u7ebf\u7a0b\u6267\u884c\u7684\u4efb\u52a1<\/p>\n<p>    }<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ul>\n<li>\u4f7f\u7528\u7ebf\u7a0b<\/li>\n<\/ul>\n<p><pre><code class=\"language-java\">MyRunnable myRunnable = new MyRunnable();<\/p>\n<p>Thread thread = new Thread(myRunnable);<\/p>\n<p>thread.start(); \/\/ \u5f00\u59cb\u6267\u884c\u7ebf\u7a0b<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p><strong>\u4f7f\u7528Runnable\u63a5\u53e3\u7684\u4f18\u52bf\u5728\u4e8e\u5b83\u66f4\u52a0\u9002\u5408\u591a\u4e2a\u7ebf\u7a0b\u5171\u4eab\u4e00\u4e2a\u8d44\u6e90\u7684\u60c5\u51b5\uff0c\u5b83\u4e5f\u8ba9\u4f60\u6709\u80fd\u529b\u53bb\u7ee7\u627f\u5176\u4ed6\u7c7b\u3002<\/strong><\/p>\n<\/p>\n<p><h3>\u4e09\u3001\u4f7f\u7528CALLABLE\u63a5\u53e3\u548cFUTURETASK<\/h3>\n<\/p>\n<p><p>Callable\u63a5\u53e3\u7c7b\u4f3c\u4e8eRunnable\uff0c\u4e0d\u8fc7\u5b83\u53ef\u4ee5\u8fd4\u56de\u4e00\u4e2a\u7ed3\u679c\u503c\uff0c\u53ef\u4ee5\u629b\u51fa\u5f02\u5e38\uff0c\u5e76\u4e14\u5fc5\u987b\u5b9e\u73b0call\u65b9\u6cd5\u3002FutureTask\u88ab\u7528\u6765\u5305\u88c5Callable\u6216Runnable\u5bf9\u8c61\uff0c\u901a\u8fc7\u8fd9\u6837\u7684\u5305\u88c5\uff0c\u53ef\u4ee5\u901a\u8fc7Future\u63a5\u53e3\u6765\u68c0\u67e5\u4efb\u52a1\u662f\u5426\u6267\u884c\u5b8c\u6bd5\uff0c\u5e76\u4e14\u53ef\u4ee5\u83b7\u53d6\u8ba1\u7b97\u7684\u7ed3\u679c\u3002<\/p>\n<\/p>\n<ul>\n<li>\u521b\u5efaCallable\u4efb\u52a1<\/li>\n<\/ul>\n<p><pre><code class=\"language-java\">import java.util.concurrent.Callable;<\/p>\n<p>public class MyCallable implements Callable&lt;Integer&gt; {<\/p>\n<p>    public Integer call() throws Exception {<\/p>\n<p>        \/\/ \u7ebf\u7a0b\u6267\u884c\u7684\u6709\u8fd4\u56de\u503c\u7684\u4efb\u52a1<\/p>\n<p>        return 123;<\/p>\n<p>    }<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ul>\n<li>\u4f7f\u7528FutureTask\u6267\u884cCallable<\/li>\n<\/ul>\n<p><pre><code class=\"language-java\">import java.util.concurrent.FutureTask;<\/p>\n<p>import java.util.concurrent.ExecutionException;<\/p>\n<p>MyCallable myCallable = new MyCallable();<\/p>\n<p>FutureTask&lt;Integer&gt; futureTask = new FutureTask&lt;&gt;(myCallable);<\/p>\n<p>new Thread(futureTask).start();<\/p>\n<p>try {<\/p>\n<p>    Integer result = futureTask.get(); \/\/ \u83b7\u53d6\u7ed3\u679c<\/p>\n<p>} catch (InterruptedException | ExecutionException e) {<\/p>\n<p>    e.printStackTrace();<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p><strong>\u901a\u8fc7\u4f7f\u7528Callable\u548cFutureTask\uff0c\u6211\u4eec\u53ef\u4ee5\u83b7\u53d6\u5f02\u6b65\u8ba1\u7b97\u7684\u7ed3\u679c\uff0c\u8fd9\u5bf9\u4e8e\u9700\u8981\u53cd\u9988\u6267\u884c\u7ed3\u679c\u7684\u60c5\u51b5\u5341\u5206\u6709\u5229\u3002<\/strong><\/p>\n<\/p>\n<p><h3>\u56db\u3001\u4f7f\u7528\u7ebf\u7a0b\u6c60\uff08EXECUTOR\u6846\u67b6\uff09<\/h3>\n<\/p>\n<p><p>Java\u7684Executor\u6846\u67b6\u63d0\u4f9b\u4e86\u7ebf\u7a0b\u6c60\u7684\u5b9e\u73b0\uff0c\u53ef\u4ee5\u91cd\u7528\u56fa\u5b9a\u6570\u91cf\u7684\u7ebf\u7a0b\u6c60\uff0c\u4ee5\u53ca\u5176\u4ed6\u591a\u79cd\u6267\u884c\u7b56\u7565\u7684\u7ebf\u7a0b\u6c60\u3002ExecutorService\u662fExecutor\u6846\u67b6\u7684\u6838\u5fc3\u63a5\u53e3\uff0c\u5b83\u7ba1\u7406\u7740\u7ebf\u7a0b\u7684\u8c03\u5ea6\u548c\u6267\u884c\u3002<\/p>\n<\/p>\n<ul>\n<li>\u521b\u5efa\u7ebf\u7a0b\u6c60<\/li>\n<\/ul>\n<p><pre><code class=\"language-java\">import java.util.concurrent.ExecutorService;<\/p>\n<p>import java.util.concurrent.Executors;<\/p>\n<p>ExecutorService executor = Executors.newFixedThreadPool(5); \/\/ \u521b\u5efa\u5bb9\u91cf\u4e3a5\u7684\u7ebf\u7a0b\u6c60<\/p>\n<p><\/code><\/pre>\n<\/p>\n<ul>\n<li>\u63d0\u4ea4\u4efb\u52a1\u6267\u884c<\/li>\n<\/ul>\n<p><pre><code class=\"language-java\">executor.execute(new MyRunnable()); \/\/ \u63d0\u4ea4\u5e76\u6267\u884c\u4efb\u52a1<\/p>\n<p>\/\/ \u6216<\/p>\n<p>Future&lt;Integer&gt; future = executor.submit(new MyCallable()); \/\/ \u63d0\u4ea4\u6709\u8fd4\u56de\u503c\u7684\u4efb\u52a1<\/p>\n<p>try {<\/p>\n<p>    Integer result = future.get(); \/\/ \u83b7\u53d6Callable\u4efb\u52a1\u7684\u7ed3\u679c<\/p>\n<p>} catch (InterruptedException | ExecutionException e) {<\/p>\n<p>    e.printStackTrace();<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p><strong>\u7ebf\u7a0b\u6c60\u7684\u4f7f\u7528\u80fd\u591f\u964d\u4f4e\u8d44\u6e90\u6d88\u8017\uff0c\u63d0\u9ad8\u54cd\u5e94\u901f\u5ea6\uff0c\u589e\u52a0\u7ebf\u7a0b\u7684\u53ef\u7ba1\u7406\u6027\u3002\u8fd9\u662f\u6267\u884c\u5927\u91cf\u5f02\u6b65\u4efb\u52a1\u65f6\u63a8\u8350\u7684\u505a\u6cd5\u3002<\/strong><\/p>\n<\/p>\n<p><p>\u901a\u8fc7\u4e86\u89e3\u8fd9\u4e9b\u591a\u7ebf\u7a0b\u7684\u5b9e\u73b0\u65b9\u5f0f\u548c\u7279\u70b9\uff0cJava\u5f00\u53d1\u8005\u53ef\u4ee5\u6839\u636e\u9879\u76ee\u9700\u6c42\u548c\u5b9e\u9645\u573a\u666f\uff0c\u9009\u62e9\u6700\u5408\u9002\u7684\u591a\u7ebf\u7a0b\u5b9e\u73b0\u65b9\u6cd5\u3002\u5728\u5904\u7406\u9700\u8981\u5e76\u884c\u6267\u884c\u3001\u8d44\u6e90\u5171\u4eab\u3001\u6709\u8fd4\u56de\u7ed3\u679c\u6216\u8005\u5bf9\u7ebf\u7a0b\u751f\u547d\u5468\u671f\u6709\u4e25\u683c\u7ba1\u7406\u8981\u6c42\u7684\u4efb\u52a1\u65f6\uff0c\u6070\u5f53\u5730\u8fd0\u7528\u8fd9\u4e9b\u6280\u672f\uff0c\u80fd\u6781\u5927\u5730\u63d0\u5347\u7a0b\u5e8f\u7684\u6548\u7387\u548c\u7a33\u5b9a\u6027\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p><strong>\u4ec0\u4e48\u662f\u591a\u7ebf\u7a0b\uff1f\u5982\u4f55\u5728Java\u9879\u76ee\u4e2d\u5b9e\u73b0\u591a\u7ebf\u7a0b\uff1f<\/strong><br \/>\n\u591a\u7ebf\u7a0b\u662f\u6307\u5728\u4e00\u4e2a\u7a0b\u5e8f\u4e2d\u540c\u65f6\u8fd0\u884c\u591a\u4e2a\u7ebf\u7a0b\uff0c\u6bcf\u4e2a\u7ebf\u7a0b\u53ef\u4ee5\u72ec\u7acb\u6267\u884c\u4e0d\u540c\u7684\u4efb\u52a1\u3002\u5728Java\u9879\u76ee\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u5b9e\u73b0Runnable\u63a5\u53e3\u3001\u7ee7\u627fThread\u7c7b\u3001\u4f7f\u7528Executor\u6846\u67b6\u7b49\u65b9\u5f0f\u6765\u5b9e\u73b0\u591a\u7ebf\u7a0b\u3002<\/p>\n<p><strong>\u5982\u4f55\u4f7f\u7528Runnable\u63a5\u53e3\u5b9e\u73b0\u591a\u7ebf\u7a0b\uff1f\u6709\u54ea\u4e9b\u4f18\u70b9\uff1f<\/strong><br 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