{"id":203989,"date":"2025-05-22T15:29:45","date_gmt":"2025-05-22T07:29:45","guid":{"rendered":"https:\/\/server.hk\/cnblog\/203989\/"},"modified":"2025-05-22T15:29:45","modified_gmt":"2025-05-22T07:29:45","slug":"java%e7%ba%bf%e7%a8%8b%e5%90%8c%e6%ad%a5%ef%bc%9await%e6%96%b9%e6%b3%95%e5%af%bc%e8%87%b4%e8%ae%a1%e6%95%b0%e5%99%a8%e6%84%8f%e5%a4%96%e5%a2%9e%e9%95%bf%e7%9a%84%e5%8e%9f%e5%9b%a0%e6%98%af%e4%bb%80","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/203989\/","title":{"rendered":"Java\u7ebf\u7a0b\u540c\u6b65\uff1await\u65b9\u6cd5\u5bfc\u81f4\u8ba1\u6570\u5668\u610f\u5916\u589e\u957f\u7684\u539f\u56e0\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

Java\u7ebf\u7a0b\u540c\u6b65\uff1await\u65b9\u6cd5\u5bfc\u81f4\u8ba1\u6570\u5668\u610f\u5916\u589e\u957f\u7684\u539f\u56e0\u662f\u4ec0\u4e48\uff1f<\/h1>\n

\u5077\u5077\u52aa\u529b\uff0c\u6084\u65e0\u58f0\u606f\u5730\u53d8\u5f3a\uff0c\u7136\u540e\u60ca\u8273\u6240\u6709\u4eba\uff01\u54c8\u54c8\uff0c\u5c0f\u4f19\u4f34\u4eec\u53c8\u6765\u5b66\u4e60\u5566~\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u4ecb\u7ecd\u300aJava\u7ebf\u7a0b\u540c\u6b65\uff1await\u65b9\u6cd5\u5bfc\u81f4\u8ba1\u6570\u5668\u610f\u5916\u589e\u957f\u7684\u539f\u56e0\u662f\u4ec0\u4e48\uff1f\u300b<\/span>\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u4f1a\u8bb2\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u4e0d\u77e5\u9053\u5927\u5bb6\u5bf9\u5176\u90fd\u6709\u591a\u5c11\u4e86\u89e3\uff0c\u4e0b\u9762\u6211\u4eec\u5c31\u4e00\u8d77\u6765\u770b\u4e00\u5427\uff01\u5f53\u7136\uff0c\u975e\u5e38\u5e0c\u671b\u5927\u5bb6\u80fd\u591a\u591a\u8bc4\u8bba\uff0c\u7ed9\u51fa\u5408\u7406\u7684\u5efa\u8bae\uff0c\u6211\u4eec\u4e00\u8d77\u5b66\u4e60\uff0c\u4e00\u8d77\u8fdb\u6b65\uff01<\/p>\n

<\/p>\n

java\u7ebf\u7a0b\u540c\u6b65\uff1await\u65b9\u6cd5\u5e26\u6765\u610f\u5916\u7ed3\u679c\u7684\u5206\u6790<\/strong><\/p>\n

\u5728java\u7ebf\u7a0b\u7684\u540c\u6b65\u4e2d\uff0c\u4f7f\u7528wait\u65b9\u6cd5\u9700\u8981\u683c\u5916\u8c28\u614e\uff0c\u5426\u5219\u4f1a\u4ea7\u751f\u4e0e\u9884\u671f\u4e0d\u7b26\u7684\u7ed3\u679c\u3002<\/p>\n

\u5728\u4e00\u4e2a\u7ebf\u7a0b\u5bf9\u4e00\u4e2a\u5171\u4eabint\u53d8\u91cf\u8fdb\u884c\u589e\u52a0\u7684\u793a\u4f8b\u4e2d\uff0c\u9884\u671f\u7ebf\u7a0boutput\u4e2di\u7684\u503c\u6309\u987a\u5e8f\u589e\u52a0\uff0c\u4f46\u6709\u65f6\u5374\u51fa\u73b0\u8d85\u51fa\u9884\u671f\u76845\u3002\u8fd9\u79cd\u73b0\u8c61\u7684\u6839\u6e90\u5728\u4e8e\u5224\u65ad\u6761\u4ef6i<5\u7684\u653e\u7f6e\u3002<\/p>\n

\u5177\u4f53\u6765\u8bf4\uff0ci<5\u5224\u65ad\u5e76\u4e0d\u5728synchronized\u4ee3\u7801\u5757\u5185\uff0c\u8fd9\u610f\u5473\u7740\u5728\u5224\u65ad\u4e4b\u540e\u8fdb\u5165synchronized\u4ee3\u7801\u5757\u4e4b\u524d\uff0c\u53d8\u91cfi\u6709\u53ef\u80fd\u88ab\u5176\u4ed6\u7ebf\u7a0b\u4fee\u6539\u3002\u7531\u4e8ewait\u65b9\u6cd5\u4f1a\u91ca\u653e\u9501\uff0c\u53e6\u4e00\u4e2a\u7ebf\u7a0b\u53ef\u4ee5\u5728\u6b64\u65f6\u4fee\u6539i\u3002\u5f53\u7b2c\u4e00\u4e2a\u7ebf\u7a0b\u518d\u6b21\u83b7\u53d6\u9501\u540e\uff0ci\u5df2\u7ecf\u4e0d\u518d\u5c0f\u4e8e5\uff0c\u56e0\u6b64\u8df3\u51fa\u4e86\u5faa\u73af\uff0c\u4f46\u7531\u4e8e\u4e4b\u524d\u5df2\u7ecf\u6253\u5370\u8fc74\uff0c\u6240\u4ee5\u6700\u7ec8\u7ed3\u679c\u4e2d\u51fa\u73b0\u4e86\u591a\u4f59\u76845\u3002<\/p>\n

\u56e0\u6b64\uff0c\u5728\u4f7f\u7528wait\u65b9\u6cd5\u65f6\uff0c\u5224\u65ad\u6761\u4ef6\u5fc5\u987b\u4f4d\u4e8esynchronized\u4ee3\u7801\u5757\u5185\u3002\u8fd9\u6837\u624d\u80fd\u786e\u4fdd\u5728\u91ca\u653e\u9501\u548c\u8fdb\u5165wait\u72b6\u6001\u4e4b\u524d\uff0c\u5224\u65ad\u6761\u4ef6\u59cb\u7ec8\u4e0e\u5f53\u524d\u7ebf\u7a0b\u7684\u53d8\u91cf\u503c\u4e00\u81f4\u3002<\/p>\n

\u6539\u6b63\u540e\u7684\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n

public class NumPlus1 implements Runnable {\n    int i = 0;\n\n    @Override\n    public void run() {\n        Thread now = Thread.currentThread();\n        while (true) {\n            synchronized (this) {\n                if (i < 5) {\n                    System.out.println(now.getName() + \":\" + i++);\n                    try {\n                        wait(1000);\n                    } catch (InterruptedException e) {\n                        throw new RuntimeException(e);\n                    }\n                }\n            }\n        }\n    }\n}<\/pre>\n
\u4ee5\u4e0a\u5c31\u662f\u300aJava\u7ebf\u7a0b\u540c\u6b65\uff1await\u65b9\u6cd5\u5bfc\u81f4\u8ba1\u6570\u5668\u610f\u5916\u589e\u957f\u7684\u539f\u56e0\u662f\u4ec0\u4e48\uff1f\u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8e\u7684\u8d44\u6599\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
Java\u7ebf\u7a0b\u540c\u6b65\uff1await\u65b9\u6cd5\u5bfc...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-203989","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203989","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=203989"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203989\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=203989"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=203989"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=203989"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}