{"id":176674,"date":"2020-10-11T22:55:00","date_gmt":"2020-10-11T14:55:00","guid":{"rendered":"http:\/\/4563.org\/?p=176674"},"modified":"2020-10-11T22:55:00","modified_gmt":"2020-10-11T14:55:00","slug":"%e6%89%80%e4%bb%a5-concurrenthashmap-%e6%89%a9%e5%ae%b9%e7%9a%84%e6%97%b6%e5%80%99%ef%bc%8c%e7%ba%bf%e7%a8%8b-a-%e5%85%88-putab%ef%bc%8c%e7%ba%bf%e7%a8%8b-b-%e5%90%8e-geta%ef%bc%8c%e7%ba%bf","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=176674","title":{"rendered":"\u6240\u4ee5 ConcurrentHashMap \u6269\u5bb9\u7684\u65f6\u5019\uff0c\u7ebf\u7a0b A \u5148 put(a,b)\uff0c\u7ebf\u7a0b B \u540e get(a)\uff0c\u7ebf\u7a0b B \u83b7\u5f97\u7684\u7ed3\u679c\u4f1a\u662f null\uff1f"},"content":{"rendered":"<div>\n<div>\n<div>\n<h1>                  \u6240\u4ee5 ConcurrentHashMap \u6269\u5bb9\u7684\u65f6\u5019\uff0c\u7ebf\u7a0b A \u5148 put(a,b)\uff0c\u7ebf\u7a0b B \u540e get(a)\uff0c\u7ebf\u7a0b B \u83b7\u5f97\u7684\u7ed3\u679c\u4f1a\u662f null\uff1f               <\/h1>\n<p> <\/p>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : Newyorkcity <\/span>  <span><i><\/i> 2<\/span> <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div isfirst=\"1\">                        \u7f51\u4e0a\u7684\u8d44\u6599\u4e0a\u8bf4\u6269\u5bb9\u65f6 get \u64cd\u4f5c\u8d70\u65e7\u8868\u5e76\u4e0d\u963b\u585e\uff0c\u4f46 put \u64cd\u4f5c\u963b\u585e\uff0c\u6545\u6709\u6b64\u95ee\u3002<\/p>\n<p>\u591a\u8c22      <\/p><\/div>\n<div> <b>\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (<span>6<\/span>)        <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<ul>\n<li data-pid=\"3899295\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : user8341 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u6709\u6ca1\u6709\u4ee3\u7801                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"3899296\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : by73 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             JavaDoc: Retrievals reflect the results of the most recently completed update operations holding upon their onset.<\/p>\n<p>\u5c31\u662f\u8bf4\u5982\u679c get() \u7684\u540c\u65f6\u4e5f\u5728 put()\uff0c\u90a3\u4e48 get() \u51fa\u6765\u7684\u503c\u5c31\u662f\u65e7\u503c\uff08\u6216\u8005 Null \uff09\u3002                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"3899297\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : fzz <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u5f31\u4e00\u81f4\u6027\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"3899298\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : zdt3476 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u65e2\u7136\u662f\u4e24\u4e2a\u7ebf\u7a0b\u4f60\u600e\u4e48\u80fd\u80af\u5b9a A \u6bd4 B \u5148\u6267\u884c\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"3899299\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : zlllllei <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @zdt3476 \u8c01\u5148\u6267\u884c\u8c01\u5c31\u662f A\uff0c\u6240\u4ee5 A \u4e00\u5b9a\u5148 B \u6267\u884c\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"3899300\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : zlllllei <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @zdt3476 \u6b20\u8003\u8651\u4e86\uff0c\u4e00\u5f00\u59cb\u6ca1\u7406\u89e3\u4f60\u7684\u610f\u601d\u3002\u5f53\u6211\u6ca1\u8bf4\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li>\n","protected":false},"excerpt":{"rendered":"<p>\u6240\u4ee5 ConcurrentHash&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/176674"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=176674"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/176674\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=176674"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=176674"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=176674"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}