{"id":1046,"date":"2025-04-29T14:56:06","date_gmt":"2025-04-29T06:56:06","guid":{"rendered":"https:\/\/awamyy.top\/?p=1046"},"modified":"2025-04-29T17:20:22","modified_gmt":"2025-04-29T09:20:22","slug":"synchronized%e9%9a%8f%e7%ac%94","status":"publish","type":"post","link":"https:\/\/awamyy.top\/?p=1046","title":{"rendered":"synchronized\u968f\u7b14"},"content":{"rendered":"\n<p class=\"has-large-font-size\">synchronized\uff08\u4e92\u65a5\u9501\/\u60b2\u89c2\u9501\uff09\uff0c\u5b9e\u73b0\u7ebf\u7a0b\u540c\u6b65\uff0c\u8ba9\u591a\u4e2a\u7ebf\u7a0b\u6392\u961f\u4f9d\u6b21\u83b7\u53d6\u67d0\u4e2a\u8d44\u6e90\uff0c\u4fdd\u8bc1\u6570\u636e\u4e0d\u4f1a\u51fa\u9519\uff0c\u533a\u522b\u4e8e\u4e50\u89c2\u9501\uff0c\u5e38\u7528\u5728\u5199\u64cd\u4f5c\u8f83\u591a\u7684\u573a\u666f\uff0c\u5982\u91d1\u878d\u3001\u4ea4\u6613\u7b49\u4e1a\u52a1\u3002<\/p>\n\n\n\n<p class=\"has-larger-font-size\"><strong>\u4fee\u9970\u65b9\u6cd5<\/strong><\/p>\n\n\n\n<ul>\n<li class=\"has-large-font-size\">\u975e\u9759\u6001\u65b9\u6cd5 &#8211; \u9501\u5b9a\u7684\u662f\u65b9\u6cd5\u7684\u8c03\u7528\u8005\uff0c\u5373\u7c7bnew\u51fa\u6765\u7684\u5b9e\u4f8b<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-3\">\n<div class=\"wp-block-column is-layout-flow\">\n<pre class=\"wp-block-code\" style=\"font-size:15px\"><code>class Data{\n    public <strong>synchronized<\/strong> void fun1(){\n        try {\n            TimeUnit.SECONDS.sleep(3);\n        } catch (InterruptedException e) {\n            throw new RuntimeException(e);\n        }\n        System.out.println(\"1...\");\n    }\n\n    public <strong>synchronized<\/strong> void fun2(){\n        System.out.println(\"2...\");\n    }\n}<\/code><\/pre>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow\">\n<pre class=\"wp-block-code\" style=\"font-size:15px\"><code>public class Main {\n    public static void main(String&#91;] args) {\n        <strong>Data data = new Data();<\/strong>\n        new Thread(()-&gt;{\n            data.func1();\n        },\"A\").start();\n        try {\n            TimeUnit.SECONDS.sleep(1);\n        } catch (InterruptedException e) {\n            throw new RuntimeException(e);\n        }\n        new Thread(()-&gt;{\n            data.func2();\n        },\"B\").start();\n}<\/code><\/pre>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-9\">\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow\">\n<p class=\"has-normal-font-size\">\u2460\u9501\u5b9a\u4e24\u4e2a\u975e\u9759\u6001\u65b9\u6cd5\uff0c\u4e14\u4f7f\u7528\u7684\u662f\u540c\u4e00\u4e2a\u7c7b\u7684\u5b9e\u4f8b\u7684\u60c5\u51b5\u4e0b\uff0c\u5219\u4f1a\u89e6\u53d1synchronized\uff0c\u9700\u8981\u7b49func1\u6267\u884c\u5b8c\u6210\u540e\u91ca\u653e\u9501\uff0cfunc2\u624d\u6267\u884c(\u9501\u8c03\u7528\u8005)<\/p>\n\n\n\n<p class=\"has-normal-font-size\">\u2461\u9501\u5b9a\u4e00\u4e2a\u65b9\u6cd5\u5219\u4e0d\u6784\u6210\u9501\u7684\u7ade\u4e89\u5173\u7cfb\uff0c\u6240\u4ee5func2\u4f1a\u76f4\u63a5\u6267\u884c\uff0c\u65e0\u9700\u7b49\u5f85func1\u91ca\u653e\u9501<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-bottom is-layout-flow\">\n<div class=\"wp-block-columns is-layout-flex wp-container-7\">\n<div class=\"wp-block-column is-layout-flow\">\n<p class=\"has-normal-font-size\">\u2460\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n\n\n\n<p>1&#8230;<\/p>\n\n\n\n<p class=\"has-normal-font-size\">2&#8230;<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow\">\n<p class=\"has-normal-font-size\">\u2461\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n\n\n\n<p>2&#8230;<\/p>\n\n\n\n<p class=\"has-normal-font-size\">1&#8230;<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<ul>\n<li class=\"has-large-font-size\">\u9759\u6001\u65b9\u6cd5 &#8211; \u9501\u5b9a\u7684\u662f\u7c7b<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-12\">\n<div class=\"wp-block-column is-layout-flow\">\n<pre class=\"wp-block-code\"><code>class Data{\n    public <strong>synchronized<\/strong> <strong>static<\/strong> void fun1(){\n        try {\n            TimeUnit.SECONDS.sleep(3);\n        } catch (InterruptedException e) {\n            throw new RuntimeException(e);\n        }\n        System.out.println(\"1...\");\n    }\n\n    public <strong>synchronized static<\/strong> void fun2(){\n        System.out.println(\"2...\");\n    }\n}<\/code><\/pre>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow\">\n<pre class=\"wp-block-code\"><code>public class Main {\n    public static void main(String&#91;] args) {\n        <strong>Data data1 = new Data();\n        Data data2 = new Data();<\/strong>\n        new Thread(()-&gt;{\n            data1.func1();\n        },\"A\").start();\n        try {\n            TimeUnit.SECONDS.sleep(1);\n        } catch (InterruptedException e) {\n            throw new RuntimeException(e);\n        }\n        new Thread(()-&gt;{\n            data2.func2();\n        },\"B\").start();\n}<\/code><\/pre>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-18\">\n<div class=\"wp-block-column is-layout-flow\">\n<p>\u2460\u9501\u5b9a\u4e24\u4e2a\u9759\u6001\u65b9\u6cd5\uff0c\u5373\u4f7f\u8c03\u7528\u7684\u662f\u4e24\u4e2a\u4e0d\u540c\u7684\u5b9e\u4f8b\uff0c\u4e5f\u4f1a\u9700\u8981\u7b49\u5f85\u9501(\u9501\u7c7b)<\/p>\n\n\n\n<p>\u2461\u5982\u679c\u6307\u53ea\u9501\u5b9a\u4e00\u4e2a\u9759\u6001\u65b9\u6cd5\uff0c\u5219\u8c03\u7528\u53e6\u4e00\u4e2a\u65b9\u6cd5\u4e0d\u9700\u8981\u7b49\u5f85\u9501<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow\">\n<div class=\"wp-block-columns is-layout-flex wp-container-16\">\n<div class=\"wp-block-column is-layout-flow\">\n<p>\u2460\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n\n\n\n<p>1&#8230;<\/p>\n\n\n\n<p>2&#8230;<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow\">\n<p>\u2461\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n\n\n\n<p>2&#8230;<\/p>\n\n\n\n<p>1&#8230;<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<p class=\"has-larger-font-size\"><strong>\u4fee\u9970\u4ee3\u7801\u5757<\/strong> &#8211; \u9501\u5b9a\u7684\u662f\u4f20\u5165\u5bf9\u8c61<\/p>\n\n\n\n<ul>\n<li class=\"has-large-font-size\">\u4f8b1\uff1a\u4f20\u5165(this)<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-21\">\n<div class=\"wp-block-column is-layout-flow\">\n<pre class=\"wp-block-code\"><code>class Data {\n   public void fun(){\n       <strong>synchronized (this)<\/strong>{\/\/\u9501\u5bf9\u5f53\u524d\u7684\u5b9e\u4f8b\u5316\u5bf9\u8c61(this)\u8d77\u4f5c\u7528\n           System.out.println(\"start...\");\n           try {\n               TimeUnit.SECONDS.sleep(1);\n           } catch (InterruptedException e) {\n               throw new RuntimeException(e);\n           }\n           System.out.println(\"end...\");\n       }\n   }\n}<\/code><\/pre>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow\">\n<pre class=\"wp-block-code\"><code>\u2460public static void main(String&#91;] args) {\n     Data data = new Data();\n     for (int i = 0; i &lt; 5; i++) {\n         new Thread(() -&gt; {\n             data.fun();\n         },\"A\").start();\n     }\n}<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>\u2461public static void main(String&#91;] args) {\n      for (int i = 0; i &lt; 5; i++) {\n          Data data = new Data();\n          new Thread(() -&gt; {\n              data.fun();\n          },\"A\").start();\n      }\n}<\/code><\/pre>\n<\/div>\n<\/div>\n\n\n\n<p>\u4f20\u5165\u5bf9\u8c61\u4e3athis\u65f6\uff0c\u4f1a\u9501\u4f4f\u5f53\u524d\u7c7b\u7684\u5b9e\u4f8b\u5316\u5bf9\u8c61\u3002<\/p>\n\n\n\n<p>\u5728\u2460\u4e2d\uff0c\u56e0\u4e3a\u53ea\u6709\u4e00\u4e2a\u5b9e\u4f8b\u5316\u5bf9\u8c61\uff0c\u6240\u4ee5\u4e94\u4e2a\u7ebf\u7a0b\u9700\u8981\u6392\u961f\uff0c\u8f93\u51fa\u7ed3\u679c\u662fstart&#8230;\\n end&#8230;\u2026\u2026\u4ea4\u66ff\u8f93\u51fa\u3002<\/p>\n\n\n\n<p>\u5728\u2461\u4e2d\uff0c\u56e0\u4e3a\u6bcf\u6b21\u521b\u5efa\u7ebf\u7a0b\u7684\u540c\u65f6\u4e5f\u4f1anew\u4e00\u4e2a\u65b0\u7684\u5bf9\u8c61\uff0c\u6240\u4ee5\u4e0d\u9700\u8981\u6392\u961f\uff0c\u8f93\u51fa\u7ed3\u679c\u662fstart&#8230;.\\n start&#8230;.\u2026\u2026\u76f4\u5230\u6700\u540e\u4e00\u4e2aend&#8230;\u3002<\/p>\n\n\n\n<ul>\n<li class=\"has-large-font-size\">\u4f8b2\uff1a\u4f20\u5165\u7c7b(Data.class)<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-24\">\n<div class=\"wp-block-column is-layout-flow\">\n<pre class=\"wp-block-code\"><code>class Data {\n    public void fun(){\n        <strong>synchronized (Data.class)<\/strong>{  \/\/\u9501\u7c7b\n            System.out.println(\"start...\");\n            try {\n                TimeUnit.SECONDS.sleep(1);\n            } catch (InterruptedException e) {\n                throw new RuntimeException(e);\n            }\n            System.out.println(\"end...\");\n        }\n    }\n}<\/code><\/pre>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow\">\n<pre class=\"wp-block-code\"><code>\u2460public static void main(String&#91;] args) {\n     Data data = new Data();\n     for (int i = 0; i &lt; 5; i++) {\n         new Thread(() -&gt; {\n             data.fun();\n         },\"A\").start();\n     }\n}<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>\u2461public static void main(String&#91;] args) {\n     for (int i = 0; i &lt; 5; i++) {\n         Data data = new Data();\n         new Thread(() -&gt; {\n             data.fun();\n         },\"A\").start();\n     }\n}<\/code><\/pre>\n<\/div>\n<\/div>\n\n\n\n<p>\u4f20\u5165\u5bf9\u8c61\u4e3aData.class\u65f6\uff0c\u9501\u7684\u662f\u4f20\u5165\u7c7b\uff0c\u65b0\u5b9e\u4f8b\u5316\u7684\u5bf9\u8c61\u4e5f\u5c5e\u4e8e\u8fd9\u4e2a\u7c7b\uff0c\u6240\u4ee5\u2460\u2461\u90fd\u9700\u8981\u6392\u961f\u7b49\u5f85\u9501\uff0c\u8f93\u51fa\u7ed3\u679c\u662fstart&#8230;\\n end&#8230;\u2026\u2026\u4ea4\u66ff\u8f93\u51fa\u3002<\/p>\n\n\n\n<ul>\n<li class=\"has-large-font-size\">\u4f8b3 \uff1a\u4f20\u5165\u4e00\u4e2a\u53d8\u91cf(Integer num)<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-29\">\n<div class=\"wp-block-column is-layout-flow\">\n<div class=\"wp-block-columns is-layout-flex wp-container-27\">\n<div class=\"wp-block-column is-layout-flow\">\n<pre class=\"wp-block-code\"><code>class Data {\n    public void fun(<strong>Integer num<\/strong>){\n        <strong>\/\/Integer num = 1; \u8fd9\u79cd\u60c5\u51b5\u548c\u4f20\u53c2\u7ed3\u679c\u4e00\u81f4<\/strong>\n        <strong>synchronized (num)<\/strong>{ \/\n            System.out.println(\"start...\");\n            try {\n                TimeUnit.SECONDS.sleep(1);\n            } catch (InterruptedException e) {\n                throw new RuntimeException(e);\n            }\n            System.out.println(\"end...\");\n        }\n    }\n}<\/code><\/pre>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow\">\n<pre class=\"wp-block-code\"><code>public static void main(String&#91;] args) {\n    for (int i = 0; i &lt; 3; i++) {\n        Data data = new Data();\n        new Thread(() -&gt; {\n           <strong> Integer num = 1;<\/strong>\n            <strong>data.fun(num);<\/strong>\n        },\"A\").start();\n    }\n}<\/code><\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<p>\u4f20\u5165\u5bf9\u8c61\u4e3a\u4e00\u4e2a\u53d8\u91cf\u65f6\uff0c\u7531\u4e8e\u5bf9\u8c61\u53ea\u6709\u4e00\u4e2a\uff0c\u6240\u4ee5\u7ebf\u7a0b\u8fd8\u4f1a\u53bb\u4e89\u593a\u9501\u3002\u8fd9\u91cc\u4e0d\u96be\u53d1\u73b0\uff0c<strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#dd2d2d\" class=\"has-inline-color\">synchronized\u4fee\u9970\u4ee3\u7801\u5757\u7684\u60c5\u51b5\u4e0b\uff0c\u662f\u6839\u636e\u9501\u7684\u5bf9\u8c61\u7684\u662f\u5355\u4e2a\u8fd8\u662f\u591a\u4e2a\u6765\u786e\u5b9a\u662f\u5426\u9700\u8981\u6392\u961f\u7684\uff08\u4e00\u4e2a\u5219\u7ebf\u7a0b\u9700\u8981\u6392\u961f\u4e89\u593a\u9501\uff0c\u591a\u4e2a\u5219\u7ebf\u7a0b\u90fd\u4f1a\u62ff\u5230\u9501\uff09<\/mark>\u3002<\/strong>\u4f46\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0cInteger\u7684\u8303\u56f4\u4e3a-128~127\u65f6\u662f\u540c\u4e00\u4e2a\u5bf9\u8c61(\u4ece\u5e38\u91cf\u6c60\u91cc\u53d6)\uff0c\u6240\u4ee5\u5f53Integer=128\u65f6\uff0c\u6bcf\u6b21\u4f20\u5165\u90fd\u4f1a\u662f\u4e00\u4e2a\u65b0\u7684\u5bf9\u8c61\uff0c\u5373\u4e5f\u4e0d\u9700\u8981\u6392\u961f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>synchronized\uff08\u4e92\u65a5\u9501\/\u60b2\u89c2\u9501\uff09\uff0c\u5b9e\u73b0\u7ebf \u2026<\/p>\n","protected":false},"author":1,"featured_media":1051,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[39,1,40],"tags":[38,37],"_links":{"self":[{"href":"https:\/\/awamyy.top\/index.php?rest_route=\/wp\/v2\/posts\/1046"}],"collection":[{"href":"https:\/\/awamyy.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/awamyy.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/awamyy.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/awamyy.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1046"}],"version-history":[{"count":76,"href":"https:\/\/awamyy.top\/index.php?rest_route=\/wp\/v2\/posts\/1046\/revisions"}],"predecessor-version":[{"id":1160,"href":"https:\/\/awamyy.top\/index.php?rest_route=\/wp\/v2\/posts\/1046\/revisions\/1160"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/awamyy.top\/index.php?rest_route=\/wp\/v2\/media\/1051"}],"wp:attachment":[{"href":"https:\/\/awamyy.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1046"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/awamyy.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1046"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/awamyy.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1046"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}