{"id":149,"date":"2018-12-28T14:31:34","date_gmt":"2018-12-28T06:31:34","guid":{"rendered":"http:\/\/47.101.202.111\/?p=149"},"modified":"2026-09-11T15:39:04","modified_gmt":"2026-09-11T07:39:04","slug":"java%e5%a4%9a%e7%ba%bf%e7%a8%8b%e5%ae%9e%e7%8e%b0","status":"publish","type":"post","link":"http:\/\/139.196.114.170\/?p=149","title":{"rendered":"\u5e76\u53d1\u7f16\u7a0b &#8211; \u591a\u7ebf\u7a0b\u5b9e\u73b0"},"content":{"rendered":"<p>Java\u591a\u7ebf\u7a0b\u5b9e\u73b0\u7684\u4e09\u79cd\u65b9\u5f0f\uff1a\u7ee7\u627fThread\u7c7b\uff0c\u5b9e\u73b0Runnable\u63a5\u53e3\uff0c\u5b9e\u73b0Callable\u63a5\u53e3\u5e76\u7528FutureTask\u7c7b\u5305\u88c5<\/p>\n<h4>\u8fdb\u7a0b\u4e0e\u7ebf\u7a0b<\/h4>\n<p>\u5b9e\u8d28\u662f\u8d44\u6e90\u7684\u8f6e\u6d41\u62a2\u5360\uff0c\u540c\u4e00\u65f6\u95f4\u70b9\u4e0a\u53ea\u6709\u4e00\u4e2a\u7a0b\u5e8f\uff0c\u540c\u4e00\u65f6\u95f4\u6bb5\u6709\u591a\u4e2a\u7a0b\u5e8f\u5e76\u53d1<br \/>\n\u7ebf\u7a0b\u662f\u8fdb\u7a0b\u57fa\u7840\u4e0a\u5212\u5206\u66f4\u5c0f\u7684\u5355\u5143\uff0c\u591a\u7ebf\u7a0b\u5e76\u53d1\u5904\u7406\u6267\u884c\u6548\u7387\u9ad8\u4e8e\u8fdb\u7a0b<\/p>\n<h4>\u591a\u7ebf\u7a0b\u7684\u5b9e\u73b0<\/h4>\n<p>\u591a\u7ebf\u7a0b\u5747\u7531\u7528\u6237\u81ea\u5b9a\u4e49\u7ebf\u7a0b\u7c7b\uff0c\u4f18\u5148\u8003\u8651Runnable\u63a5\u53e3\u5b9e\u73b0\uff0c\u907f\u514d\u5355\u7ee7\u627f\u5199\u6b7b\uff0c\u4ece\u800c\u66f4\u597d\u6269\u5145\u529f\u80fd\uff1b\u5747\u901a\u8fc7Thread\u7c7b\u7684start()\u65b9\u6cd5\u542f\u52a8\u7ebf\u7a0b\uff1b\u901a\u8fc7Callable\u63a5\u53e3\u83b7\u53d6\u7ebf\u7a0b\u8fd4\u56de\u503c<br \/>\n\u82e5\u4ec5\u8c03\u7528run()\u65b9\u6cd5\u800c\u672a\u8c03\u7528start()\u65b9\u6cd5\uff0c\u76f8\u5f53\u4e8e\u666e\u901a\u65b9\u6cd5\u6309\u987a\u5e8f\u6267\u884c<\/p>\n<h4>\u5355\u7ee7\u627f\u5b9e\u73b0  Thread\u7c7b\u5b9e\u73b0\u591a\u7ebf\u7a0b<\/h4>\n<ul>\n<li>\u5b9a\u4e49    \u5b9a\u4e49\u7528\u6237\u81ea\u5b9a\u4e49\u7ebf\u7a0b\u7c7b\n<pre><code class=\"language-java\">public class CustomThread extends Thread{\n\/\/\u6784\u9020\u65b9\u6cd5\npublic CustomThread(){}\n\/\/\u7ebf\u7a0b\u4e3b\u65b9\u6cd5\npublic void run(){\n    \/\/\u5e76\u53d1\u8fd0\u884c\u7684\u5185\u5bb9\n}\n}<\/code><\/pre>\n<\/li>\n<li>\u4f7f\u7528    \u4f7f\u7528start()\u65b9\u6cd5\u542f\u52a8\u7ebf\u7a0b\n<pre><code class=\"language-java\">public static void main(String[] args){\nnew CustomThread().start();\n}<\/code><\/pre>\n<\/li>\n<\/ul>\n<h4>\u7a81\u7834\u5355\u7ee7\u627f\u5c40\u9650 Runnable\u63a5\u53e3\u5b9e\u73b0\u591a\u7ebf\u7a0b<\/h4>\n<p>Runnable\u63a5\u53e3\u5b9a\u4e49<\/p>\n<pre lang=\"java\">\n@FunctionalInterface  \/\/\u5f15\u5165lambda\u8868\u8fbe\u5f0f\u540e\u6210\u4e3a\u51fd\u6570\u5f0f\u63a5\u53e3\npublic interface Runnable{\n    public void run();\n}\n<\/pre>\n<ul>\n<li>\u5b9a\u4e49    \u5b9a\u4e49\u7528\u6237\u81ea\u5b9a\u4e49\u7ebf\u7a0b\u7c7b\n<pre><code class=\"language-java\">class CustomThread implements Runnable{\n\/\/\u6784\u9020\u65b9\u6cd5\npublic CustomThread(){}\n\/\/\u7ebf\u7a0b\u4e3b\u65b9\u6cd5\npublic void run(){\n    \/\/\u5e76\u53d1\u8fd0\u884c\u7684\u5185\u5bb9\n}\n}<\/code><\/pre>\n<\/li>\n<li>\u4f7f\u75281   Runnable\u63a5\u53e3\u5bf9\u8c61\u4f20\u9012\u7ed9Thread\u7c7b\uff0c\u518d\u7531Thread\u7c7b\u8c03\u7528start()\u65b9\u6cd5\n<pre><code class=\"language-java\">public static void main(String[] args){\nnew Thread(new CustomThread()).start();\n}<\/code><\/pre>\n<\/li>\n<li>\u4f7f\u75282   lambda\u8868\u8fbe\u5f0f\u5b9a\u4e49\u4f7f\u7528\n<pre><code class=\"language-java\">Runnable run = ()-&gt; {\n\/\/\u5e76\u53d1\u8fd0\u884c\u7684\u5185\u5bb9\n};\nnew Thread(run).start();<\/code><\/pre>\n<\/li>\n<li>\u4f7f\u75283   lambda\u8868\u8fbe\u5f0f\u5b9a\u4e49\u4f7f\u7528\n<pre><code class=\"language-java\">new Thread(()-&gt;{\n\/\/\u5e76\u53d1\u8fd0\u884c\u7684\u5185\u5bb9\n}).start();<\/code><\/pre>\n<\/li>\n<\/ul>\n<h4>\u83b7\u53d6\u7ebf\u7a0b\u8fd4\u56de\u503c Callable\u63a5\u53e3\u5b9e\u73b0\u591a\u7ebf\u7a0b<\/h4>\n<p>Callable\u63a5\u53e3\u5b9a\u4e49<\/p>\n<pre lang=\"java\">\n@FunctionalInterface\npublic interface Callable<V>{\n    public V call() throws Exception;\n}\n<\/pre>\n<p>\u8bbe\u7f6e\u4e00\u4e2a\u6cdb\u578b\uff0c\u6b64\u6cdb\u578b\u4e3a\u8fd4\u56de\u6570\u636e\u7684\u7c7b\u578b\uff0c\u4ee5\u907f\u514d\u5411\u4e0b\u8f6c\u578b\u5b89\u5168\u9690\u60a3<\/p>\n<ul>\n<li>\u5b9a\u4e49 \u7528\u6237\u81ea\u5b9a\u4e49\u7ebf\u7a0b\u7c7b\n<pre><code class=\"language-java\">class CustomThread implements Callable&lt;T&gt; {\n@Override\npublic T call() throws Exception{\n    \/\/\u8fd4\u56de\u503c\u5b58\u5165T\u7c7b\u578b\u5bf9\u8c61\u903b\u8f91\n    return T;\/\/\u8fd4\u56deT\u7c7b\u578b\u5bf9\u8c61\n}\n}<\/code><\/pre>\n<\/li>\n<li>\u4f7f\u7528\n<pre><code class=\"language-java\">public static void main(String[] args) throws Exception{\n\/\/Callable\u5b50\u7c7b\u5bf9\u8c61\u4f20\u5165FutureTask\u7c7b\nFutureTask&lt;T&gt; task = new FutureTask&lt;&gt;(new CustomThread());\n\/\/FutureTask\u7c7b\u5bf9\u8c61\u4f20\u5165Thread\u7c7b\nnew Thread(task).start();\n\/\/\u83b7\u53d6\u8fd4\u56de\u503c\ntask.get();\n}<\/code><\/pre>\n<\/li>\n<\/ul>\n<h4>Thread\u7c7b\u548cRunnable\u7c7b\u7684\u5173\u7cfb<\/h4>\n<p>Thread\u7c7b\u548c\u7528\u6237\u81ea\u5b9a\u4e49CustomThread\u7c7b\u90fd\u662fRunnable\u63a5\u53e3\u7684\u5b50\u7c7b\uff0c\u5b9e\u73b0\u65f6\u5747\u8986\u5199\u7684\u662fRunnable\u7c7b\u7684run()\u65b9\u6cd5<br \/>\n\u5b9e\u9645\u5728\u4f7f\u7528\u65f6\uff0crun()\u65b9\u6cd5\u4e0d\u80fd\u88ab\u76f4\u63a5\u8c03\u7528\uff0c\u6d4b\u8bd5\u7c7b\u8c03\u7528\u7684\u662fThread\u7c7b\u7684start()\u65b9\u6cd5\u542f\u52a8\u7ebf\u7a0b\uff0cstart()\u65b9\u6cd5\u518d\u53bb\u8c03\u7528CustomThread\u7c7b\u7684run()\u65b9\u6cd5\u3002Thread\u7c7b\u7684\u529f\u80fd\u662f\u64cd\u4f5c\u7cfb\u7edf\u7ebf\u7a0b\u76f8\u5173\u7684\u8d44\u6e90\u8c03\u5ea6\u5904\u7406\uff08\u6e90\u7801\u5206\u67901\uff09\uff0c\u7528\u6237\u81ea\u5b9a\u4e49CustomThread\u7c7b\u6765\u5b9e\u73b0\u5e76\u53d1\u8fdb\u884c\u7684\u6838\u5fc3\u4e1a\u52a1<\/p>\n<ul>\n<li>\n<p>\u6e90\u7801\u5206\u6790<br \/>\nThread\u7c7b\u7684start()\u65b9\u6cd5\u8c03\u7528native start0()\u62bd\u8c61\u65b9\u6cd5\uff0c\u7531JVM\u6839\u636e\u4e0d\u540c\u7684\u64cd\u4f5c\u7cfb\u7edf\u6765\u5b9e\u73b0start0()(JNI),\u4ece\u800c\u901a\u8fc7\u4e0d\u540c\u7684\u64cd\u4f5c\u7cfb\u7edf\u8c03\u7528\u5404\u81ea\u5bf9\u5e94\u7684\u8d44\u6e90\u8c03\u5ea6\u7b97\u6cd5<br \/>\n<img decoding=\"async\" src=\"https:\/\/i0.wp.com\/47.101.202.111\/wp-content\/uploads\/2018\/12\/thread-00-1024x424.png?resize=525%2C217\" alt=\"\" data-recalc-dims=\"1\" \/><br \/>\nThread\u7c7b\u6784\u9020\u65b9\u6cd5\u4f20\u9012Runnable\u63a5\u53e3\u5bf9\u8c61\uff0c\u63a5\u53e3\u5bf9\u8c61\u88abThread\u7c7b\u5bf9\u8c61\u4e2d\u7684target\u4fdd\u5b58<br \/>\n<img decoding=\"async\" src=\"https:\/\/i0.wp.com\/47.101.202.111\/wp-content\/uploads\/2018\/12\/thread01-01-1024x371.png?resize=525%2C190\" alt=\"\" data-recalc-dims=\"1\" \/><\/p>\n<\/li>\n<li>\n<p>\u6ce8\u610f<br \/>\n\u6bcf\u4e2a\u7ebf\u7a0b\u7684\u7c7b\u5bf9\u8c61\u53ea\u5141\u8bb8\u542f\u52a8\u4e00\u6b21\uff0c\u540c\u4e00\u4e2a\u7ebf\u7a0b\u91cd\u590d\u4f7f\u7528start\u65b9\u6cd5\u629b\u51faIllegalThreadStateException<\/p>\n<ul>\n<li>\n<p>\u4f7f\u7528\u540c\u4e00\u7528\u6237\u81ea\u5b9a\u4e49\u7ebf\u7a0b\u5bf9\u8c61\uff0c\u5b9e\u8d28\u662f\u591a\u4e2aThread\u7c7b\u5b9e\u4f8b\u5316\u5bf9\u8c61\u5e76\u53d1\u8bbf\u95ee\u540c\u4e00\u81ea\u5b9a\u4e49\u7ebf\u7a0b\u8d44\u6e90<\/p>\n<pre><code class=\"language-java\">class CustomThread implements Runnable {\n\n    private int ticket = 5\uff1b\n\n    @Override\n    public void run() {\n        while(ticket &gt; 0)\n        System.out.println(ticket--);\n    }\n}\n\npublic static void main(String[] args) {\n    CustomThread thread = new CustomThread();\n    new Thread(thread).start();\n    new Thread(thread).start();\n    new Thread(thread).start();\n}<\/code><\/pre>\n<pre><code>> \u6267\u884c\u7ed3\u679c 5 4 3 1 2<\/code><\/pre>\n<p><img decoding=\"async\" src=\"https:\/\/i0.wp.com\/47.101.202.111\/wp-content\/uploads\/2018\/12\/thread-00-1-1024x323.png?resize=525%2C166\" alt=\"\" data-recalc-dims=\"1\" \/><\/p>\n<\/li>\n<li>\n<p>\u4f7f\u7528\u4e0d\u540c\u81ea\u5b9a\u4e49\u7ebf\u7a0b\u5bf9\u8c61\uff0c\u5b9e\u8d28\u662f\u6bcf\u4e2a\u81ea\u5b9a\u4e49\u7ebf\u7a0b\u5bf9\u5e94\u7684Thread\u7c7b\u5bf9\u8c61\u8bbf\u95ee\u5404\u81ea\u81ea\u5b9a\u4e49\u7ebf\u7a0b\u4e2d\u7684\u8d44\u6e90\uff0c\u4e89\u62a2\u8fd0\u884c\u8d44\u6e90\u5e76\u53d1\u6267\u884c<\/p>\n<pre><code class=\"language-java\">class CustomThread implements Runnable {\n\n    String name;\n    private int ticket = 3\uff1b\n\n    public CustomThread(String name) {\n        this.name = name;\n    }\n\n    @Override\n    public void run() {\n        while(ticket &gt; 0)\n            System.out.println(name + ticket--);\n    }\n}\n\npublic static void main(String[] args) {\n    new Thread(new CustomThread(&quot;A&quot;)).start();\n    new Thread(new CustomThread(&quot;B&quot;)).start();\n    new Thread(new CustomThread(&quot;C&quot;)).start();\n}<\/code><\/pre>\n<pre><code>> \u6267\u884c\u7ed3\u679c C3 A3 A2 A1 B3 B2 B1 C2 C1<\/code><\/pre>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4>Callable\u7c7b\u548cRunnable\u7c7b\u7684\u5173\u7cfb<\/h4>\n<ul>\n<li>\n<p>\u6e90\u7801\u5206\u6790<\/p>\n<p><center><br \/>\n![](http:\/\/47.101.202.111\/wp-content\/uploads\/2018\/12\/thread-01-1024&#215;521.png)<br \/>\n<\/center><br \/>\n<center><br \/>\n<font size = 2>\u7ee7\u627f\u5173\u7cfb\u56fe\u89e3<\/font><br \/>\n<\/center><\/p>\n<p>Future\u63a5\u53e3<\/p>\n<pre lang=\"java\">\n\/* get()\u65b9\u6cd5\u5b9e\u73b0\u8fd4\u56de\u503c\u63a5\u6536 *\/\npublic V get()\nthrows InterruptedException,ExecutionException;\n}\n<\/pre>\n<p>FutureTask\u63a5\u6536Callable\u5b50\u7c7b\u5bf9\u8c61\uff0cCallable\u5c01\u88c5\u5728FutureTask\u4e2d\u4f20\u5165Thread\u7c7b\u4e2d\u5b9e\u73b0\u8c03\u7528<\/p>\n<\/li>\n<li>\n<p>Runnable\u548cCallable\u7684\u533a\u522b<br \/>\nRunnable\u662fJDK1.0\u63d0\u51fa\u7684\uff0cCallable\u662fJDK1.5\u63d0\u51fa\u7684<br \/>\nRunnable\u63a5\u53e3\u4e2d\u53ea\u6709run()\u65b9\u6cd5\uff0c\u65e0\u8fd4\u56de\u503c<br \/>\nCallable\u63a5\u53e3\u4e2d\u53ea\u6709call()\u65b9\u6cd5\uff0c\u6709\u8fd4\u56de\u503c<\/p>\n<\/li>\n<\/ul>\n<h4>\u7ebf\u7a0b\u8fd0\u884c\u72b6\u6001<\/h4>\n<p><center><br \/>\n![](http:\/\/139.196.114.170\/wp-content\/uploads\/2018\/12\/thread-02-1.png)<br \/>\n<\/center><\/p>\n<p>run()\u65b9\u6cd5\u662f\u7ebf\u7a0b\u6267\u884c\u903b\u8f91\u3002Runnable\u7684\u672c\u8d28\u662f\u628a\u4e00\u6bb5\u201c\u65e0\u53c2\u6570\u3001\u65e0\u8fd4\u56de\u503c\u201d\u7684\u53ef\u6267\u884c\u4ee3\u7801\u5c01\u88c5\u6210\u4e00\u4e2a\u4efb\u52a1\uff0c\u7136\u540e\u4ea4\u7ed9\u4e0d\u540c\u7684\u6267\u884c\u673a\u5236\u53bb\u8fd0\u884c\u3002\u5b83\u672c\u8eab\u4e0d\u4ee3\u8868\u7ebf\u7a0b\uff0c\u53ea\u4ee3\u8868\u201c\u4efb\u52a1\u201d\u3002<\/p>\n<p>Thread.start() \u672c\u8d28\u662f\u542f\u52a8\u4e00\u4e2a\u65b0\u7ebf\u7a0b\uff0c\u7b49\u5f85\u64cd\u4f5c\u7cfb\u7edf\u8c03\u7528\uff0c\u4e0d\u963b\u585e\u5f53\u524d\u7ebf\u7a0b\u3002\u65b0\u7ebf\u7a0b\u88ab\u8c03\u5ea6\u65f6\uff0c\u6267\u884crun() \u65b9\u6cd5\u3002\u542f\u52a8\u540e\u5904\u4e8e\u5c31\u7eea\u6001\uff0c\u6267\u884c\u8fc7\u7a0b\u4e2d\u53ef\u80fd\u5b58\u5728\u4ee5\u4e0b\u60c5\u51b5\uff1a\u6267\u884c\u4e00\u6bb5\u65f6\u95f4\u540e\u8ba9\u51fa\u8d44\u6e90\u8fdb\u5165\u963b\u585e\u72b6\u6001\uff0c\u76f4\u5230\u518d\u6b21\u8d44\u6e90\u8c03\u5ea6\u6210\u529f\u518d\u8fdb\u5165\u5c31\u7eea\u72b6\u6001\u3002run()\u65b9\u6cd5\u6267\u884c\u5b8c\u6bd5\u540e\uff0c\u7ebf\u7a0b\u8fdb\u5165\u505c\u6b62\u72b6\u6001<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java\u591a\u7ebf\u7a0b\u5b9e\u73b0\u7684\u4e09\u79cd\u65b9\u5f0f\uff1a\u7ee7\u627fThread\u7c7b\uff0c\u5b9e\u73b0Runnable\u63a5\u53e3\uff0c\u5b9e\u73b0Callable\u63a5\u53e3\u5e76\u7528Fut &hellip; <\/p>\n<p class=\"link-more\"><a href=\"http:\/\/139.196.114.170\/?p=149\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">\u201c\u5e76\u53d1\u7f16\u7a0b &#8211; \u591a\u7ebf\u7a0b\u5b9e\u73b0\u201d<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[69,25],"tags":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"http:\/\/139.196.114.170\/index.php?rest_route=\/wp\/v2\/posts\/149"}],"collection":[{"href":"http:\/\/139.196.114.170\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/139.196.114.170\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/139.196.114.170\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/139.196.114.170\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=149"}],"version-history":[{"count":10,"href":"http:\/\/139.196.114.170\/index.php?rest_route=\/wp\/v2\/posts\/149\/revisions"}],"predecessor-version":[{"id":3019,"href":"http:\/\/139.196.114.170\/index.php?rest_route=\/wp\/v2\/posts\/149\/revisions\/3019"}],"wp:attachment":[{"href":"http:\/\/139.196.114.170\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=149"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/139.196.114.170\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=149"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/139.196.114.170\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=149"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}