{"id":1050,"date":"2022-10-22T14:05:27","date_gmt":"2022-10-22T06:05:27","guid":{"rendered":"https:\/\/qaqaq.top\/?p=1050"},"modified":"2022-11-27T12:39:50","modified_gmt":"2022-11-27T04:39:50","slug":"%e5%a4%9a%e7%ba%bf%e7%a8%8b-%e6%ad%bb%e9%94%81%e7%9a%84%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"https:\/\/qaqaq.top\/?p=1050","title":{"rendered":"\u591a\u7ebf\u7a0b-\u6b7b\u9501\u7684\u95ee\u9898"},"content":{"rendered":"\n<pre class=\"wp-block-code\"><code>package top.qaqaq.java.P438;\r\n\r\n\/**\r\n * \u6f14\u793a\u7ebf\u7a0b\u7684\u6b7b\u9501\u95ee\u9898\r\n *\r\n * 1.\u6b7b\u9501\u7684\u7406\u89e3\uff1a\u4e0d\u540c\u7684\u7ebf\u7a0b\u5206\u522b\u5360\u7528\u5bf9\u65b9\u9700\u8981\u7684\u540c\u6b65\u8d44\u6e90\u4e0d\u653e\u5f03\uff0c\r\n * \u90fd\u5728\u7b49\u5f85\u5bf9\u65b9\u653e\u5f03\u81ea\u5df1\u9700\u8981\u7684\u540c\u6b65\u8d44\u6e90\uff0c\u5c31\u5f62\u6210\u4e86\u7ebf\u7a0b\u7684\u6b7b\u9501\r\n *\r\n * 2.\u8bf4\u660e\uff1a\r\n * 1\uff09\u51fa\u73b0\u6b7b\u9501\u540e\uff0c\u4e0d\u4f1a\u51fa\u73b0\u5f02\u5e38\uff0c\u4e0d\u4f1a\u51fa\u73b0\u63d0\u793a\uff0c\u53ea\u662f\u6240\u6709\u7684\u7ebf\u7a0b\u90fd\u5904\u4e8e\u963b\u585e\u72b6\u6001\uff0c\u65e0\u6cd5\u7ee7\u7eed\r\n * 2\uff09\u6211\u4eec\u4f7f\u7528\u540c\u6b65\u65f6\uff0c\u8981\u907f\u514d\u51fa\u73b0\u6b7b\u9501\u3002\r\n *\r\n * @author RichieZhang\r\n * @create 2022-10-21 \u4e0b\u5348 2:07\r\n *\/\r\npublic class ThreadTest {\r\n\r\n    public static void main(String&#91;] args) {\r\n\r\n        StringBuffer s1 = new StringBuffer();\r\n        StringBuffer s2 = new StringBuffer();\r\n\r\n        new Thread(){\r\n            @Override\r\n            public void run() {\r\n\r\n                synchronized (s1){\r\n                    s1.append(\"a\");\r\n                    s2.append(\"1\");\r\n\r\n                    try {\r\n                        Thread.sleep(100);\r\n                    } catch (InterruptedException e) {\r\n                        e.printStackTrace();\r\n                    }\r\n\r\n                    synchronized (s2){\r\n                        s1.append(\"b\");\r\n                        s2.append(\"2\");\r\n\r\n                        System.out.println(s1);\r\n                        System.out.println(s2);\r\n                    }\r\n                }\r\n            }\r\n        }.start();\r\n\r\n        new Thread(new Runnable() {\r\n            @Override\r\n            public void run() {\r\n                synchronized (s2){\r\n                    s1.append(\"c\");\r\n                    s2.append(\"3\");\r\n\r\n                    try {\r\n                        Thread.sleep(100);\r\n                    } catch (InterruptedException e) {\r\n                        e.printStackTrace();\r\n                    }\r\n\r\n                    synchronized (s1){\r\n                        s1.append(\"d\");\r\n                        s2.append(\"4\");\r\n\r\n                        System.out.println(s1);\r\n                        System.out.println(s2);\r\n                    }\r\n                }\r\n            }\r\n        }).start();\r\n    }\r\n}\r\n<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>package top.qaqaq.java.P438;\r\n\r\n\/\/\u6b7b\u9501\u7684\u6f14\u793a\r\nclass A {\r\n    public synchronized void foo(B b) { \/\/\u540c\u6b65\u76d1\u89c6\u5668\uff1aA\u7c7b\u7684\u5bf9\u8c61\uff1aa\r\n        System.out.println(\"\u5f53\u524d\u7ebf\u7a0b\u540d: \" + Thread.currentThread().getName()\r\n                + \" \u8fdb\u5165\u4e86A\u5b9e\u4f8b\u7684foo\u65b9\u6cd5\"); \/\/ \u2460\r\n\/\/\t\ttry {\r\n\/\/\t\t\tThread.sleep(200);\r\n\/\/\t\t} catch (InterruptedException ex) {\r\n\/\/\t\t\tex.printStackTrace();\r\n\/\/\t\t}\r\n        System.out.println(\"\u5f53\u524d\u7ebf\u7a0b\u540d: \" + Thread.currentThread().getName()\r\n                + \" \u4f01\u56fe\u8c03\u7528B\u5b9e\u4f8b\u7684last\u65b9\u6cd5\"); \/\/ \u2462\r\n        b.last();\r\n    }\r\n\r\n    public synchronized void last() {\/\/\u540c\u6b65\u76d1\u89c6\u5668\uff1aA\u7c7b\u7684\u5bf9\u8c61\uff1aa\r\n        System.out.println(\"\u8fdb\u5165\u4e86A\u7c7b\u7684last\u65b9\u6cd5\u5185\u90e8\");\r\n    }\r\n}\r\n\r\nclass B {\r\n    public synchronized void bar(A a) {\/\/\u540c\u6b65\u76d1\u89c6\u5668\uff1ab\r\n        System.out.println(\"\u5f53\u524d\u7ebf\u7a0b\u540d: \" + Thread.currentThread().getName()\r\n                + \" \u8fdb\u5165\u4e86B\u5b9e\u4f8b\u7684bar\u65b9\u6cd5\"); \/\/ \u2461\r\n\/\/\t\ttry {\r\n\/\/\t\t\tThread.sleep(200);\r\n\/\/\t\t} catch (InterruptedException ex) {\r\n\/\/\t\t\tex.printStackTrace();\r\n\/\/\t\t}\r\n        System.out.println(\"\u5f53\u524d\u7ebf\u7a0b\u540d: \" + Thread.currentThread().getName()\r\n                + \" \u4f01\u56fe\u8c03\u7528A\u5b9e\u4f8b\u7684last\u65b9\u6cd5\"); \/\/ \u2463\r\n        a.last();\r\n    }\r\n\r\n    public synchronized void last() {\/\/\u540c\u6b65\u76d1\u89c6\u5668\uff1ab\r\n        System.out.println(\"\u8fdb\u5165\u4e86B\u7c7b\u7684last\u65b9\u6cd5\u5185\u90e8\");\r\n    }\r\n}\r\n\r\npublic class DeadLock implements Runnable {\r\n    A a = new A();\r\n    B b = new B();\r\n\r\n    public void init() {\r\n        Thread.currentThread().setName(\"\u4e3b\u7ebf\u7a0b\");\r\n        \/\/ \u8c03\u7528a\u5bf9\u8c61\u7684foo\u65b9\u6cd5\r\n        a.foo(b);\r\n        System.out.println(\"\u8fdb\u5165\u4e86\u4e3b\u7ebf\u7a0b\u4e4b\u540e\");\r\n    }\r\n\r\n    public void run() {\r\n        Thread.currentThread().setName(\"\u526f\u7ebf\u7a0b\");\r\n        \/\/ \u8c03\u7528b\u5bf9\u8c61\u7684bar\u65b9\u6cd5\r\n        b.bar(a);\r\n        System.out.println(\"\u8fdb\u5165\u4e86\u526f\u7ebf\u7a0b\u4e4b\u540e\");\r\n    }\r\n\r\n    public static void main(String&#91;] args) {\r\n        DeadLock dl = new DeadLock();\r\n        new Thread(dl).start();\r\n\r\n\r\n        dl.init();\r\n    }\r\n}\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[46],"class_list":["post-1050","post","type-post","status-publish","format-standard","hentry","category-java-code","tag-java"],"_links":{"self":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/1050"}],"collection":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1050"}],"version-history":[{"count":1,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/1050\/revisions"}],"predecessor-version":[{"id":1051,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/1050\/revisions\/1051"}],"wp:attachment":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1050"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1050"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1050"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}