\u540c\u6b65\u96c6\u5408\u53ef\u4ee5\u7b80\u5355\u5730\u7406\u89e3\u4e3a\u901a\u8fc7synchronized\u6765\u5b9e\u73b0\u540c\u6b65\u7684\u96c6\u5408\u3002\u5982\u679c\u6709\u591a\u4e2a\u7ebf\u7a0b\u8c03\u7528\u540c\u6b65 \u96c6\u5408\u7684\u65b9\u6cd5\uff0c\u5b83\u4eec\u5c06\u4f1a\u4e32\u884c\u6267\u884c\u3002
\narrayList \u548c vector\u3001stack\uff1a<\/p>\n
1\u3001\tVector\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\uff0c\u6e90\u7801\u4e2d\u6709\u5f88\u591a\u7684synchronized\u53ef\u4ee5\u770b\u51fa\uff0c\u800cArrayList\u4e0d\u662f\u3002\u5bfc \u81f4Vector\u6548\u7387\u65e0\u6cd5\u548cArrayList\u76f8\u6bd4
\n2\u3001\tArrayList\u548cVector\u90fd\u91c7\u7528\u7ebf\u6027\u8fde\u7eed\u5b58\u50a8\u7a7a\u95f4\uff0c\u5f53\u5b58\u50a8\u7a7a\u95f4\u4e0d\u8db3\u7684\u65f6\u5019\uff0cArrayList\u9ed8\u8ba4 \u589e\u52a0\u4e3a\u539f\u6765\u768450%, Vector\u9ed8\u8ba4\u589e\u52a0\u4e3a\u539f\u6765\u7684\u4e00\u500d
\n3\u3001\tVector\u53ef\u4ee5\u8bbe\u7f6ecapacityIncrement,\u800cArrayList\u4e0d\u53ef\u4ee5\uff0c\u4ece\u5b57\u9762\u7406\u89e3\u5c31\u662fcapacity \u5bb9\u91cf\uff0cIncrement\u589e\u52a0\uff0c\u5bb9\u91cf\u589e\u957f\u7684\u53c2\u6570
\n4\u3001\tStack\u662f\u7ee7\u627f\u4e8eVector,\u57fa\u4e8e\u52a8\u6001\u6570\u7ec4\u5b9e\u73b0\u7684\u4e00\u4e2a\u7ebf\u7a0b\u5b89\u5168\u7684\u6808
\n5\u3001\tarrayList\u3001 vector\u3001Stack\u7684\u5171\u6027\u7279\u70b9\uff1a\u968f\u673a\u8bbf\u95ee\u901f\u5ea6\u5feb\uff0c\u63d2\u5165\u548c\u79fb\u9664\u6027\u80fd\u8f83\u5dee(\u8fd9\u662f\u6570 \u7ec4\u7684\u7279\u70b9\uff0c\u4e09\u8005\u7684\u5e95\u5c42\u5747\u4e3a\u6570\u7ec4\u5b9e\u73b0)<\/p>\n
HashMap \u548c Hashtable\uff1a
\n1\u3001\tHashMap \u662f\u975e synchronized \u7684\uff0c\u800c Hashtable \u662f synchronized \u7684\u3002\u8fd9\u8bf4\u660e Hashtable \u662f \u7ebf\u7a0b\u5b89\u5168\u7684\uff0c\u800c\u4e14\u591a\u4e2a\u7ebf\u7a0b\u53ef\u4ee5\u5171\u4eab\u4e00\u4e2aHashtable
\n2\u3001\t\u7531\u4e8eHashtable\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\uff0c\u4e5f\u662fsynchronized\u7684\uff0c\u6240\u4ee5\u5728\u5355\u7ebf\u7a0b\u73af\u5883\u4e0b\u6bd4HashMap \u8981\u6162
\n3\u3001\tHashMap\u53ef\u4ee5\u5b58\u5728null\u7684\u952e\u503c(key)\u548c\u503c(value),
\n\u4f46\u662fHashtable\u662f\u4e0d\u53ef\u4ee5\u7684<\/p>\n
Collections\uff1a \u540c\u6b65\u96c6\u5408\u53ef\u4ee5\u7b80\u5355\u5730\u7406\u89e3\u4e3a\u901a\u8fc7synchronized\u6765\u5b9e\u73b0\u540c\u6b65\u7684\u96c6\u5408\u3002\u5982\u679c\u6709\u591a\u4e2a\u7ebf\u7a0b\u8c03\u7528\u540c\u6b65 \u96c6\u5408\u7684\u65b9\u6cd5\uff0c\u5b83\u4eec […]<\/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-9859","post","type-post","status-publish","format-standard","hentry","category-java"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/9859","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=9859"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/9859\/revisions"}],"predecessor-version":[{"id":9860,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/9859\/revisions\/9860"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=9859"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=9859"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=9859"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nCollections\u662f\u4e3a\u96c6\u5408\u63d0\u4f9b\u5404\u79cd\u65b9\u4fbf\u64cd\u4f5c\u7684\u5de5\u5177\u7c7b\uff0c\u901a\u8fc7\u5b83\uff0c\u53ef\u4ee5\u5b9e\u73b0\u96c6\u5408\u6392\u5e8f\u3001\u67e5\u627e\u3001\u66ff\u6362\u3001 \u540c\u6b65\u63a7\u5236\u3001\u8bbe\u7f6e\u4e0d\u53ef\u53d8\u96c6\u5408
\nCollections.synchronizedCollection(Collection
\nCollections.synchronizedList(List
\nCollections.synchronizedMap(Map<K, V>map)
\nCollections.synchronizedSet(Set
\n\u4e0a\u9762\u51e0\u4e2a\u65b9\u6cd5\u662fCollections \u5de5\u5177\u7c7b\u5c06\u96c6\u5408\u53d8\u4e3a\u540c\u6b65\u96c6\u5408\uff0c\u4ece\u800c\u89e3\u51b3\u96c6\u5408\u7684\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898\u3002
\n\u540c\u6b65\u96c6\u5408\u5728\u5355\u7ebf\u7a0b\u7684\u73af\u5883\u4e0b\u80fd\u591f\u4fdd\u8bc1\u7ebf\u7a0b\u5b89\u5168\uff0c\u4f46\u662f\u901a\u8fc7synchronized\u540c\u6b65\u65b9\u6cd5\u5c06\u8bbf\u95ee\u64cd\u4f5c \u4e32\u884c\u5316\uff0c\u5bfc\u81f4\u5e76\u53d1\u73af\u5883\u4e0b\u6548\u7387\u4f4e\u4e0b\u3002\u800c\u4e14\u540c\u6b65\u96c6\u5408\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\u7684\u590d\u5408\u64cd\u4f5c(\u8fed\u4ee3\u3001\u6761\u4ef6\u8fd0 \u7b97\u5982\u6ca1\u6709\u5219\u6dfb\u52a0\u7b49)\u662f\u975e\u7ebf\u7a0b\u5b89\u5168\uff0c\u9700\u8981\u5ba2\u6237\u7aef\u4ee3\u7801\u6765\u5b9e\u73b0\u52a0\u9501\u3002
\n\u5e76\u53d1\u96c6\u5408
\n\u662fjdk5.0\u91cd\u8981\u7684\u7279\u6027\uff0c\u589e\u52a0\u4e86\u5e76\u53d1\u5305java.util.concurrent.*\u3002 Java\u5185\u5b58\u6a21\u578b\u3001volatile \u53d8\u91cf\u53caAbstractQueuedSynchronizer(\u7b80\u79f0AQS\u540c\u6b65\u5668)\uff0c\u662f\u5e76\u53d1\u5305\u4f17\u591a\u5b9e\u73b0\u7684\u57fa\u7840\u3002
\n\u5e38\u89c1\u7684\u5e76\u53d1\u96c6\u5408\uff1a
\n1\u3001\tConcurrentHashMap:\u7ebf\u7a0b\u5b89\u5168\u7684 HashMap \u7684\u5b9e\u73b0
\n2\u3001\tCopyOnWriteArrayList:\u7ebf\u7a0b\u5b89\u5168\u4e14\u5728\u8bfb\u64cd\u4f5c\u65f6\u65e0\u9501\u7684ArrayList
\n3\u3001\tCopyOnWriteArraySet:\u57fa\u4e8e CopyOnWriteArrayList,\u4e0d\u6dfb\u52a0\u91cd\u590d\u5143\u7d20
\n4\u3001\tArrayB1ockingQueue:\u57fa\u4e8e\u6570\u7ec4\u3001\u5148\u8fdb\u5148\u51fa\u3001\u7ebf\u7a0b\u5b89\u5168\uff0c\u53ef\u5b9e\u73b0\u6307\u5b9a\u65f6\u95f4\u7684\u963b\u585e\u8bfb\u5199\uff0c\u5e76\u4e14\u5bb9\u91cf\u53ef\u4ee5\u9650\u5236
\n5\u3001\tLinkedBlockingQueue\uff1a\u57fa\u4e8e\u94fe\u8868\u5b9e\u73b0\uff0c\u8bfb\u5199\u5404\u7528\u4e00\u628a\u9501\uff0c\u5728\u9ad8\u5e76\u53d1\u8bfb\u5199\u64cd\u4f5c\u90fd\u591a\u7684\u60c5\u51b5 \u4e0b\uff0c\u6027\u80fd\u4f18\u4e8eArrayB1ockingQueue
\nCopyOnWrite\u96c6\u5408\u5373\u5199\u65f6\u590d\u5236\u7684\u96c6\u5408\u3002
\n\u901a\u4fd7\u7684\u7406\u89e3\u662f\u5f53\u6211\u4eec\u5f80\u4e00\u4e2a\u96c6\u5408\u6dfb\u52a0\u5143\u7d20\u7684\u65f6\u5019\uff0c\u4e0d\u76f4\u63a5\u5f80\u5f53\u524d\u96c6\u5408\u6dfb\u52a0\uff0c\u800c\u662f\u5148\u5c06\u5f53\u524d\u96c6\u5408 \u8fdb\u884cCopy,\u590d\u5236\u51fa\u4e00\u4e2a\u65b0\u7684\u96c6\u5408\uff0c\u7136\u540e\u65b0\u7684\u96c6\u5408\u91cc\u6dfb\u52a0\u5143\u7d20\uff0c\u6dfb\u52a0\u5b8c\u5143\u7d20\u4e4b\u540e\uff0c\u518d\u5c06\u539f\u96c6\u5408 \u7684\u5f15\u7528\u6307\u5411\u65b0\u7684\u96c6\u5408\u3002\u8fd9\u6837\u505a\u7684\u597d\u5904\u662f\u6211\u4eec\u53ef\u4ee5\u5bf9CopyOnWrite\u96c6\u5408\u8fdb\u884c\u5e76\u53d1\u7684\u8bfb\uff0c\u800c\u4e0d\u9700\u8981 \u52a0\u9501\uff0c\u56e0\u4e3a\u5f53\u524d\u96c6\u5408\u4e0d\u4f1a\u6dfb\u52a0\u4efb\u4f55\u5143\u7d20\u3002\u6240\u4ee5CopyOnWrite\u96c6\u5408\u4e5f\u662f\u4e00\u79cd\u8bfb\u5199\u5206\u79bb\u7684\u601d\u60f3\uff0c\u8bfb \u548c\u5199\u4e0d\u540c\u7684\u96c6\u5408\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"