{"id":9853,"date":"2023-11-28T21:16:38","date_gmt":"2023-11-28T13:16:38","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=9853"},"modified":"2023-11-28T21:16:57","modified_gmt":"2023-11-28T13:16:57","slug":"java-zhong-shuo-shuo-zi-ji-shi-zen-me-shi-yongsync","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/java-zhong-shuo-shuo-zi-ji-shi-zen-me-shi-yongsync\/","title":{"rendered":"Java\u4e2d\u8bf4\u8bf4\u81ea\u5df1\u662f\u600e\u4e48\u4f7f\u7528synchronized\u5173\u952e\u5b57\uff1f"},"content":{"rendered":"<p>1\u3001\u4fee\u9970\u5b9e\u4f8b\u65b9\u6cd5\uff0c\u4f5c\u7528\u4e8e\u5f53\u524d\u5bf9\u8c61\u5b9e\u4f8b\u52a0\u9501\uff0c\u8fdb\u5165\u540c\u6b65\u4ee3\u7801\u524d\u8981\u83b7\u5f97\u5f53\u524d\u5bf9\u8c61\u5b9e\u4f8b\u7684\u9501<\/p>\n<pre><code class=\"language-plain_text\">public synchronized void normalMethod() throws InterruptedException {\nfor (int i = 0; i &lt; 10; i++) {\nThread.sleep(l000);\nSystem.out.println(&quot;normalMethod\uff1a&quot; + i);\n}\n}\n2\u3001\t\u4fee\u9970\u9759\u6001\u65b9\u6cd5\uff0c\u4f5c\u7528\u4e8e\u5f53\u524d\u7c7b\u5bf9\u8c61\u52a0\u9501\uff0c\u8fdb\u5165\u540c\u6b65\u4ee3\u7801\u524d\u8981\u83b7\u5f97\u5f53\u524d\u7c7b\u5bf9\u8c61\u7684\u9501\u3002\npublic static synchronized void staticMethod() throws InterruptedException {\nfor (int i = 0; i &lt; 10; i++) {\nThread.sleep(500);\nSystem.out.println(&quot;staticMethod\uff1a&quot; + i);\n}\n}\n<\/code><\/pre>\n<p>\u4e5f\u5c31\u662f\u7ed9\u5f53\u524d\u7c7b\u52a0\u9501\uff0c\u4f1a\u4f5c\u7528\u4e8e\u7c7b\u7684\u6240\u6709\u5bf9\u8c61\u5b9e\u4f8b\uff0c\u56e0\u4e3a\u9759\u6001\u6210\u5458\u4e0d\u5c5e\u4e8e\u4efb\u4f55\u4e00\u4e2a\u5b9e\u4f8b\u5bf9\u8c61\uff0c \u662f\u7c7b\u6210\u5458(static\u8868\u660e\u8fd9\u662f\u8be5\u7c7b\u7684\u4e00\u4e2a\u9759\u6001\u8d44\u6e90\uff0c\u4e0d\u7ba1new \u4e86\u591a\u5c11\u4e2a\u5bf9\u8c61\uff0c\u53ea\u6709\u4e00\u4efd\uff0c\u6240 \u4ee5\u5bf9\u8be5\u7c7b\u7684\u6240\u6709\u5bf9\u8c61\u90fd\u52a0\u4e86\u9501)\u3002\u6240\u4ee5\u5982\u679c\u4e00\u4e2a\u7ebf\u7a0bA\u8c03\u7528\u4e00\u4e2a\u5b9e \u4f8b\u5bf9\u8c61\u7684\u975e\u9759\u6001 synchronized\u65b9\u6cd5\uff0c\u800c\u7ebf\u7a0bB\u9700\u8981\u8c03\u7528\u8fd9\u4e2a\u5b9e\u4f8b\u5bf9\u8c61\u6240\u5c5e\u7c7b\u7684\u9759\u6001synchronized\u65b9\u6cd5\uff0c\u662f \u5141\u8bb8\u7684\uff0c\u4e0d\u4f1a\u53d1\u751f\u4e92\u65a5\u73b0\u8c61\uff0c\u56e0\u4e3a\u8bbf\u95ee\u9759\u6001synchronized\u65b9\u6cd5\u5360\u7528\u7684\u9501\u662f\u5f53\u524d\u7c7b\u7684\u9501\uff0c\u800c \u8bbf\u95ee\u975e\u9759\u6001synchronized\u65b9\u6cd5\u5360\u7528\u7684\u9501\u662f\u5f53\u524d\u5b9e\u4f8b\u5bf9\u8c61\u9501\u3002<br \/>\n3\u3001\t\u4fee\u9970\u4ee3\u7801\u5757\uff0c\u6307\u5b9a\u52a0\u9501\u5bf9\u8c61\uff0c\u5bf9\u7ed9\u5b9a\u5bf9\u8c61\u52a0\u9501\uff0c\u8fdb\u5165\u540c\u6b65\u4ee3\u7801\u5e93\u524d\u8981\u83b7\u5f97\u7ed9\u5b9a\u5bf9\u8c61\u7684\u9501\u3002<\/p>\n<pre><code class=\"language-public\" data-meta=\"static void staticMethod() throws InterruptedException {\">synchronized (locks) {\nfor (int i = 0; i &lt; 10; i++)\t{\nThread.sleep(1000);\nSystem.out.println(&quot;staticMethod\uff1a&quot; + i);\n}\n}\n}\n<\/code><\/pre>\n<p>\u548csynchronized\u65b9 \u6cd5\u4e00\u6837,synchronized (this)\u4ee3\u7801\u5757\u4e5f\u662f\u9501\u5b9a\u5f53\u524d\u5bf9\u8c61\u3002synchronized \u5173\u952e\u5b57\u52a0\u5230static\u9759\u6001\u65b9\u6cd5\u548csynchronized (class)\u4ee3\u7801\u5757\u4e0a\u90fd\u662f\u662f\u7ed9Class\u7c7b\u4e0a\u9501\u3002<br \/>\n\u8fd9\u91cc\u518d\u63d0\u4e00\u4e0b\uff1asynchronized\u5173\u952e\u5b57\u52a0\u5230\u975estatic\u9759\u6001\u65b9\u6cd5\u4e0a\u662f\u7ed9\u5bf9\u8c61\u5b9e\u4f8b\u4e0a\u9501\u3002 \u53e6\u5916\u9700\u8981\u6ce8\u610f\u7684\u662f\uff1a\u5c3d\u91cf\u4e0d\u8981\u4f7f\u7528synchronized (String a)\u56e0\u4e3aJVM\u4e2d\uff0c\u5b57\u7b26\u4e32\u5e38\u91cf \u6c60\u5177\u6709\u7f13\u51b2\u529f\u80fd\uff01<br \/>\n\u5f53\u7136\u6709\u4e00\u70b9\u5927\u5bb6\u8981\u6ce8\u610f\uff0csynchronized\u4fee\u9970\u7684\u4ee3\u7801\u5757\u4f1a\u5728\u91ca\u653e\u9501\u7684\u65f6\u5019\u5237\u65b0\u81ea\u5df1\u66f4\u6539\u8fc7\u7684\u5168 \u5c40\u53d8\u91cf\uff0c\u4f46\u662f\u53e6\u4e00\u4e2a\u7ebf\u7a0b\u8981\u60f3\u770b\u89c1\uff0c\u5fc5\u987b\u4e5f\u4ece\u5185\u5b58\u4e2d\u91cd\u65b0\u8bfb\u624d\u884c\u3002\u800c\u4e00\u822c\u60c5\u51b5\u4e0b\uff0c\u4e0d\u662f\u4f60\u52a0\u4e86 synchronized\u7ebf\u7a0b\u5c31\u4f1a\u4ece\u5185\u5b58\u4e2d\u8bfb\u6570\u636e\u7684\uff0c\u800c\u53ea\u6709\u5b83\u5728\u7ade\u4e89\u67d0\u628a\u9501\u5931\u8d25\u540e\uff0c\u5f97\u77e5\u6709\u5176\u4ed6\u7ebf\u7a0b \u6b63\u5728\u4fee\u6539\u5171\u4eab\u53d8\u91cf\uff0c\u8fd9\u6837\u7684\u524d\u63d0\u4e0b\u7b49\u5230\u81ea\u5df1\u62e5\u6709\u9501\u4e4b\u540e\u624d\u4f1a\u91cd\u65b0\u53bb\u5237\u5185\u5b58\u6570\u636e\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1\u3001\u4fee\u9970\u5b9e\u4f8b\u65b9\u6cd5\uff0c\u4f5c\u7528\u4e8e\u5f53\u524d\u5bf9\u8c61\u5b9e\u4f8b\u52a0\u9501\uff0c\u8fdb\u5165\u540c\u6b65\u4ee3\u7801\u524d\u8981\u83b7\u5f97\u5f53\u524d\u5bf9\u8c61\u5b9e\u4f8b\u7684\u9501 public synchron [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[118],"tags":[],"class_list":["post-9853","post","type-post","status-publish","format-standard","hentry","category-java"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/9853","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=9853"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/9853\/revisions"}],"predecessor-version":[{"id":9854,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/9853\/revisions\/9854"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=9853"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=9853"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=9853"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}