{"id":316,"date":"2017-02-22T10:45:38","date_gmt":"2017-02-22T02:45:38","guid":{"rendered":"http:\/\/www.prayerlaputa.com\/?p=316"},"modified":"2017-02-22T10:45:38","modified_gmt":"2017-02-22T02:45:38","slug":"%e3%80%90%e6%ba%90%e7%a0%81%e5%88%86%e6%9e%90%e3%80%91java-sdk%e7%af%87-java-collection-framework","status":"publish","type":"post","link":"http:\/\/prayerlaputa.com\/?p=316","title":{"rendered":"\u3010\u6e90\u7801\u5206\u6790\u3011java sdk\u7bc7\u2013Java Collection Framework"},"content":{"rendered":"<p>\u672c\u6587\u5c31\u662f\u60f3\u5b66\u4e60\u3001\u7b80\u5355\u603b\u7ed3\u4e00\u4e0bJDK\u91cc\u7684JCF\uff0c\u5e76\u4e14\u5236\u5b9a\u4e00\u4e0b\u81ea\u5df1\u540e\u7eed\u9605\u8bfb\u6e90\u7801\u7684\u8303\u56f4\u2014\u2014\u5148\u5b66\u4e60\u4e00\u4e0bJCF\u4e2d\u91cd\u8981\u7684\u4e00\u4e9b\u7c7b\uff0c\u540e\u7eed\u5b66\u4e60Java\u5176\u4ed6\u4e00\u4e9b\u4e1c\u897f\uff0c\u7ed9\u81ea\u5df1\u5b9a\u4e2a\u8def\u7ebf\u56fe\uff0cO(\u2229_\u2229)O~<br \/>\n\u672c\u6587\u53c2\u8003\u4e86\u591a\u7bc7\u6587\u7ae0\uff0c\u5982\u6709\u5f15\u7528\u4f46\u6ca1\u6807\u6ce8\u7684\u5730\u65b9\uff0c\u8bf7\u53ca\u65f6\u8054\u7cfb\u6211\uff0c\u8fd9\u6587\u7ae0\u672c\u610f\u662f\u60f3\u8bb0\u5f55\u4e00\u4e0b\uff0c\u76f8\u5f53\u4e8e\u8bfb\u4e66\u7b14\u8bb0\u3002<\/p>\n<h2>\u4e00\u3001\u6982\u8ff0<\/h2>\n<p>JCF\uff0c\u5373Java Collection Framework\uff0c\u662fJDK\u4e2d\u5df2\u7ecf\u5c01\u88c5\u597d\u5bb9\u5668\u7c7b\uff0c\u7c7b\u7ed3\u6784\u5982\u4e0b\uff1a<!--more--><br \/>\n<a href=\"http:\/\/www.prayerlaputa.com\/wp-content\/uploads\/2017\/02\/JCF\u8be6\u7ec6\u56fe.jpg\"><img loading=\"lazy\" class=\" wp-image-320 aligncenter\" src=\"http:\/\/www.prayerlaputa.com\/wp-content\/uploads\/2017\/02\/JCF\u8be6\u7ec6\u56fe-300x296.jpg\" alt=\"\" width=\"519\" height=\"513\" \/><\/a><br \/>\n\u7f51\u4e0a\u5e38\u89c1\u7684\u662f\u8fd9\u5f20\u56fe\uff0c\u4f46\u5176\u5b9e\u5c11\u4e86\u4e00\u4e2aQueue\uff0c\u770b\u4e0b\u9762\u8fd9\u5f20\u56fe\u66f4\u6e05\u695a\u4e00\u4e9b\uff1a<a href=\"http:\/\/www.prayerlaputa.com\/wp-content\/uploads\/2017\/02\/JCF\u8be6\u7ec6\u56fe2.gif\"><br \/>\n<\/a><br \/>\n<a href=\"http:\/\/www.prayerlaputa.com\/wp-content\/uploads\/2017\/02\/JCF\u8be6\u7ec6\u56fe2.gif\"><img loading=\"lazy\" class=\"wp-image-319 aligncenter\" src=\"http:\/\/www.prayerlaputa.com\/wp-content\/uploads\/2017\/02\/JCF\u8be6\u7ec6\u56fe2-300x285.gif\" alt=\"\" width=\"547\" height=\"519\" \/><\/a><br \/>\n&nbsp;<br \/>\n\u770b\u7740\u5f88\u590d\u6742\uff0c\u5176\u5b9e\u6309\u7167\u6211\u4eec\u65e5\u5e38\u7528\u5230\u7684\u7c7b\uff0c\u53ef\u4ee5\u6309\u7167\u5982\u4e0b\u5206\u7c7b\uff08\u4ec5\u5217\u51fa\u5e38\u89c1\u7684\u5177\u4f53\u5b9e\u73b0\u7c7b\uff0c\u4e0a\u56fe\u90a3\u4e9b\u62bd\u8c61\u7c7b\u5c31\u4e0d\u4e00\u4e00\u8ba8\u8bba\u4e86\uff09\uff1a<br \/>\n1\u3001Collection<\/p>\n<ul>\n<li>List\n<ul>\n<li>ArrayList<\/li>\n<li>LinkedList<\/li>\n<\/ul>\n<\/li>\n<li>Set\n<ul>\n<li>HashSet<\/li>\n<li>TreeSet<\/li>\n<li>LinkedHashSet<\/li>\n<\/ul>\n<\/li>\n<li>Queue\n<ul>\n<li>ArrayDeque<\/li>\n<li>LinkedList<\/li>\n<li>\u4ee5\u53caDeque\uff08\u5982ArrayQueue\/LinkedList\/&#8230;\uff09<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>2\u3001Map<\/p>\n<ul>\n<li>HashMap\/TreeMap\/Hashtable\/&#8230;<\/li>\n<\/ul>\n<h2>\u4e8c\u3001\u5177\u4f53\u5b9e\u73b0<\/h2>\n<p>\u4ee5\u4e0b\u5206\u522b\u8ba8\u8bba\u4e00\u4e0b\uff1a<\/p>\n<h3>1\u3001List<\/h3>\n<p>\u201c<a href=\"http:\/\/www.jianshu.com\/p\/63e76826e852\">List\u63a5\u53e3\u6269\u5c55\u81eaCollection\uff0c\u5b83\u53ef\u4ee5\u5b9a\u4e49\u4e00\u4e2a\u5141\u8bb8\u91cd\u590d\u7684\u6709\u5e8f\u96c6\u5408\uff0c\u4eceList\u63a5\u53e3\u4e2d\u7684\u65b9\u6cd5\u6765\u770b\uff0cList\u63a5\u53e3\u4e3b\u8981\u662f\u589e\u52a0\u4e86\u9762\u5411\u4f4d\u7f6e\u7684\u64cd\u4f5c\uff0c\u5141\u8bb8\u5728\u6307\u5b9a\u4f4d\u7f6e\u4e0a\u64cd\u4f5c\u5143\u7d20\uff0c\u540c\u65f6\u589e\u52a0\u4e86\u4e00\u4e2a\u80fd\u591f\u53cc\u5411\u904d\u5386\u7ebf\u6027\u8868\u7684\u65b0\u5217\u8868\u8fed\u4ee3\u5668ListIterator\u3002AbstractList\u7c7b\u63d0\u4f9b\u4e86List\u63a5\u53e3\u7684\u90e8\u5206\u5b9e\u73b0\uff0cAbstractSequentialList\u6269\u5c55\u81eaAbstractList\uff0c\u4e3b\u8981\u662f\u63d0\u4f9b\u5bf9\u94fe\u8868\u7684\u652f\u6301\u3002<\/a>\u201d\u5e38\u7528\u5b9e\u73b0ArrayList\/LinkedList\u5c31\u6ca1\u5fc5\u8981\u8ba8\u8bba\u4e86\uff0c\u7f51\u4e0a\u5f88\u591a\uff0c\u5b9e\u9645\u7f16\u7a0b\u8fc7\u7a0b\u4e2d\u65f6\u523b\u8c28\u8bb0\u4e00\u4e2a\u6570\u7ec4\u5b9e\u73b0\u4e00\u4e2a\u94fe\u8868\u5b9e\u73b0\u3002<\/p>\n<h3>2\u3001Set<\/h3>\n<p><a href=\"http:\/\/www.jianshu.com\/p\/63e76826e852\">Set\u63a5\u53e3\u6269\u5c55\u81eaCollection\uff0c\u5b83\u4e0eList\u7684\u4e0d\u540c\u4e4b\u5904\u5728\u4e8e\uff0c\u89c4\u5b9aSet\u7684\u5b9e\u4f8b\u4e0d\u5305\u542b\u91cd\u590d\u7684\u5143\u7d20\u3002\u5728\u4e00\u4e2a\u89c4\u5219\u96c6\u5185\uff0c\u4e00\u5b9a\u4e0d\u5b58\u5728\u4e24\u4e2a\u76f8\u7b49\u7684\u5143\u7d20\u3002AbstractSet\u662f\u4e00\u4e2a\u5b9e\u73b0Set\u63a5\u53e3\u7684\u62bd\u8c61\u7c7b\uff0cSet\u63a5\u53e3\u6709\u4e09\u4e2a\u5177\u4f53\u5b9e\u73b0\u7c7b\uff0c\u5206\u522b\u662f\u6563\u5217\u96c6HashSet\u3001\u94fe\u5f0f\u6563\u5217\u96c6LinkedHashSet\u548c\u6811\u5f62\u96c6TreeSet\u3002<\/a><br \/>\nHashSet\u5728\u521b\u5efa\u5bf9\u8c61\u65f6\u53ef\u4ee5\u6307\u5b9a\u96c6\u5408\u521d\u59cb\u5bb9\u91cf\u3001\u8d1f\u8f7d\u56e0\u5b50\uff08load factor\uff09\uff0c\u5f53\u5143\u7d20\u4e2a\u6570\u8d85\u8fc7\u5bb9\u91cf*\u8d1f\u8f7d\u56e0\u5b50\u65f6\u96c6\u5408\u5c06\u81ea\u52a8\u6269\u5c55\u5bb9\u91cf\u3002HashSet\u5185\u90e8\u5b9e\u9645\u662f\u7528\u4e86\u4e00\u4e2akey\u662f\u4f20\u5165\u503c\u3001val\u503c\u4e3a\u4e00\u4e2a\u56fa\u5b9a\u503c\u7684HashMap\u6765\u5b9e\u73b0\u3002<\/p>\n<p class=\"js-evernote-checked\" data-evernote-id=\"834\"><a href=\"http:\/\/www.jianshu.com\/p\/63e76826e852\">LinkedHashSet\u662f\u7528\u4e00\u4e2a\u94fe\u8868\u5b9e\u73b0\u6765\u6269\u5c55HashSet\u7c7b\uff0c\u5b83\u652f\u6301\u5bf9\u89c4\u5219\u96c6\u5185\u7684\u5143\u7d20\u6392\u5e8f\u3002HashSet\u4e2d\u7684\u5143\u7d20\u662f\u6ca1\u6709\u88ab\u6392\u5e8f\u7684\uff0c\u800cLinkedHashSet\u4e2d\u7684\u5143\u7d20\u53ef\u4ee5\u6309\u7167\u5b83\u4eec\u63d2\u5165\u89c4\u5219\u96c6\u7684\u987a\u5e8f\u63d0\u53d6\u3002<\/a><\/p>\n<p><a href=\"http:\/\/blog.csdn.net\/stefanie860624\/article\/details\/7245873\">TreeSet\u6269\u5c55\u81eaAbstractSet\uff0c\u5e76\u5b9e\u73b0\u4e86NavigableSet\uff0cAbstractSet\u6269\u5c55\u81eaAbstractCollection\uff0c\u6811\u5f62\u96c6\u662f\u4e00\u4e2a\u6709\u5e8f\u7684Set\uff0c\u5176\u5e95\u5c42\u662f\u4e00\u9897\u6811\uff0c\u8fd9\u6837\u5c31\u80fd\u4eceSet\u91cc\u9762\u63d0\u53d6\u4e00\u4e2a\u6709\u5e8f\u5e8f\u5217\u4e86\u3002\u5728\u5b9e\u4f8b\u5316TreeSet\u65f6\uff0c\u6211\u4eec\u53ef\u4ee5\u7ed9TreeSet\u6307\u5b9a\u4e00\u4e2a\u6bd4\u8f83\u5668Comparator\u6765\u6307\u5b9a\u6811\u5f62\u96c6\u4e2d\u7684\u5143\u7d20\u987a\u5e8f\u3002\u6811\u5f62\u96c6\u4e2d\u63d0\u4f9b\u4e86\u5f88\u591a\u4fbf\u6377\u7684\u65b9\u6cd5\u3002<\/a><\/p>\n<h3>3\u3001Queue<\/h3>\n<p><a href=\"http:\/\/www.jianshu.com\/p\/63e76826e852\">\u961f\u5217\u662f\u4e00\u79cd\u5148\u8fdb\u5148\u51fa\u7684\u6570\u636e\u7ed3\u6784\uff0c\u5143\u7d20\u5728\u961f\u5217\u672b\u5c3e\u6dfb\u52a0\uff0c\u5728\u961f\u5217\u5934\u90e8\u5220\u9664\u3002Queue\u63a5\u53e3\u6269\u5c55\u81eaCollection\uff0c\u5e76\u63d0\u4f9b\u63d2\u5165\u3001\u63d0\u53d6\u3001\u68c0\u9a8c\u7b49\u64cd\u4f5c\u3002\u65b9\u6cd5offer\u8868\u793a\u5411\u961f\u5217\u6dfb\u52a0\u4e00\u4e2a\u5143\u7d20\uff0cpoll()\u4e0eremove()\u65b9\u6cd5\u90fd\u662f\u79fb\u9664\u961f\u5217\u5934\u90e8\u7684\u5143\u7d20\uff0c\u4e24\u8005\u7684\u533a\u522b\u5728\u4e8e\u5982\u679c\u961f\u5217\u4e3a\u7a7a\uff0c\u90a3\u4e48poll()\u8fd4\u56de\u7684\u662fnull\uff0c\u800cremove()\u4f1a\u629b\u51fa\u4e00\u4e2a\u5f02\u5e38\u3002\u65b9\u6cd5element()\u4e0epeek()\u4e3b\u8981\u662f\u83b7\u53d6\u5934\u90e8\u5143\u7d20\uff0c\u4e0d\u5220\u9664\u3002<\/a><br \/>\n<a href=\"http:\/\/www.jianshu.com\/p\/63e76826e852\">\u63a5\u53e3Deque\uff0c\u662f\u4e00\u4e2a\u6269\u5c55\u81eaQueue\u7684\u53cc\u7aef\u961f\u5217\uff0c\u5b83\u652f\u6301\u5728\u4e24\u7aef\u63d2\u5165\u548c\u5220\u9664\u5143\u7d20\uff0c\u56e0\u4e3aLinkedList\u7c7b\u5b9e\u73b0\u4e86Deque\u63a5\u53e3\uff0c\u6240\u4ee5\u901a\u5e38\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528LinkedList\u6765\u521b\u5efa\u4e00\u4e2a\u961f\u5217\u3002<\/a><br \/>\n<a href=\"http:\/\/www.jianshu.com\/p\/63e76826e852\">PriorityQueue\u7c7b\u5b9e\u73b0\u4e86\u4e00\u4e2a\u4f18\u5148\u961f\u5217\uff0c\u4f18\u5148\u961f\u5217\u4e2d\u5143\u7d20\u88ab\u8d4b\u4e88\u4f18\u5148\u7ea7\uff0c\u62e5\u6709\u9ad8\u4f18\u5148\u7ea7\u7684\u5148\u88ab\u5220\u9664\u3002<\/a><\/p>\n<h3>4\u3001Map<\/h3>\n<p>Map\uff0c\u56fe\uff0c\u662f\u4e00\u79cd\u5b58\u50a8\u952e\u503c\u5bf9\u6620\u5c04\u7684\u5bb9\u5668\u7c7b\uff0c\u5728Map\u4e2d\u952e\u53ef\u4ee5\u662f\u4efb\u610f\u7c7b\u578b\u7684\u5bf9\u8c61\uff0c\u4f46\u4e0d\u80fd\u6709\u91cd\u590d\u7684\u952e\uff0c\u6bcf\u4e2a\u952e\u90fd\u5bf9\u5e94\u4e00\u4e2a\u503c\uff0c\u771f\u6b63\u5b58\u50a8\u5728\u56fe\u4e2d\u7684\u662f\u952e\u503c\u6784\u6210\u7684\u6761\u76ee\u3002<br \/>\n<a href=\"http:\/\/www.jianshu.com\/p\/63e76826e852\">HashMap\u662f\u57fa\u4e8e\u54c8\u5e0c\u8868\u7684Map\u63a5\u53e3\u7684\u975e\u540c\u6b65\u5b9e\u73b0\uff0c\u7ee7\u627f\u81eaAbstractMap\uff0cAbstractMap\u662f\u90e8\u5206\u5b9e\u73b0Map\u63a5\u53e3\u7684\u62bd\u8c61\u7c7b\u3002<\/a><br \/>\n<a href=\"http:\/\/www.prayerlaputa.com\/wp-content\/uploads\/2017\/02\/HashMap\u5b9e\u73b0.jpg\"><img loading=\"lazy\" class=\"size-medium wp-image-321 aligncenter\" src=\"http:\/\/www.prayerlaputa.com\/wp-content\/uploads\/2017\/02\/HashMap\u5b9e\u73b0-300x108.jpg\" alt=\"\" width=\"300\" height=\"108\" \/><\/a><br \/>\n<a href=\"http:\/\/www.jianshu.com\/p\/63e76826e852\">\u5728\u4e4b\u524d\u7684\u7248\u672c\u4e2d\uff0cHashMap\u91c7\u7528\u6570\u7ec4+\u94fe\u8868\u5b9e\u73b0\uff0c\u5373\u4f7f\u7528\u94fe\u8868\u5904\u7406\u51b2\u7a81\uff0c\u540c\u4e00hash\u503c\u7684\u94fe\u8868\u90fd\u5b58\u50a8\u5728\u4e00\u4e2a\u94fe\u8868\u91cc\u3002\u4f46\u662f\u5f53\u94fe\u8868\u4e2d\u7684\u5143\u7d20\u8f83\u591a\uff0c\u5373hash\u503c\u76f8\u7b49\u7684\u5143\u7d20\u8f83\u591a\u65f6\uff0c\u901a\u8fc7key\u503c\u4f9d\u6b21\u67e5\u627e\u7684\u6548\u7387\u8f83\u4f4e\u3002\u800cJDK1.8\u4e2d\uff0cHashMap\u91c7\u7528\u6570\u7ec4+\u94fe\u8868+\u7ea2\u9ed1\u6811\u5b9e\u73b0\uff0c\u5f53\u94fe\u8868\u957f\u5ea6\u8d85\u8fc7\u9608\u503c\uff088\uff09\u65f6\uff0c\u5c06\u94fe\u8868\u8f6c\u6362\u4e3a\u7ea2\u9ed1\u6811\uff0c\u8fd9\u6837\u5927\u5927\u51cf\u5c11\u4e86\u67e5\u627e\u65f6\u95f4\u3002<\/a>\u00a0\u4e5f\u5c31\u662f\u8bf4JDK 1.8\u5f00\u59cb\u7528\u6570\u7ec4+\u94fe\u8868+\u7ea2\u9ed1\u6811\u662f\u5b9e\u73b0\u3002\u5177\u4f53\u5206\u6790\u53c2\u8003\u6b64\u6587\u7ae0\uff1a<a href=\"http:\/\/www.jianshu.com\/p\/63e76826e852\">Java &#8211; \u96c6\u5408\u6846\u67b6\u5b8c\u5168\u89e3\u6790<\/a>\u00a0 \u4ee5\u53ca\u672c\u535a\u5ba2\u540e\u7eed\u6587\u7ae0\u3002<br \/>\n<a href=\"http:\/\/www.jianshu.com\/p\/63e76826e852\">\u5728HashMap\u4e2d\u8981\u627e\u5230\u67d0\u4e2a\u5143\u7d20\uff0c\u9700\u8981\u6839\u636ekey\u7684hash\u503c\u6765\u6c42\u5f97\u5bf9\u5e94\u6570\u7ec4\u4e2d\u7684\u4f4d\u7f6e\u3002\u5bf9\u4e8e\u4efb\u610f\u7ed9\u5b9a\u7684\u5bf9\u8c61\uff0c\u53ea\u8981\u5b83\u7684hashCode()\u8fd4\u56de\u503c\u76f8\u540c\uff0c\u90a3\u4e48\u7a0b\u5e8f\u8c03\u7528hash(int h)\u65b9\u6cd5\u6240\u8ba1\u7b97\u5f97\u5230\u7684hash\u7801\u503c\u603b\u662f\u76f8\u540c\u7684\u3002\u6211\u4eec\u9996\u5148\u60f3\u5230\u7684\u5c31\u662f\u628ahash\u503c\u5bf9\u6570\u7ec4\u957f\u5ea6\u53d6\u6a21\u8fd0\u7b97\uff0c\u8fd9\u6837\u4e00\u6765\uff0c\u5143\u7d20\u7684\u5206\u5e03\u76f8\u5bf9\u6765\u8bf4\u662f\u6bd4\u8f83\u5747\u5300\u7684\u3002\u4f46\u662f\uff0c\u201c\u6a21\u201d\u8fd0\u7b97\u7684\u6d88\u8017\u8fd8\u662f\u6bd4\u8f83\u5927\u7684\uff0c\u5728HashMap\u4e2d\uff0c<strong>(n &#8211; 1) &amp; hash<\/strong>\u7528\u4e8e\u8ba1\u7b97\u5bf9\u8c61\u5e94\u8be5\u4fdd\u5b58\u5728table\u6570\u7ec4\u7684\u54ea\u4e2a\u7d22\u5f15\u5904\u3002HashMap\u5e95\u5c42\u6570\u7ec4\u7684\u957f\u5ea6\u603b\u662f2\u7684n\u6b21\u65b9\uff0c\u5f53\u6570\u7ec4\u957f\u5ea6\u4e3a2\u7684n\u6b21\u5e42\u7684\u65f6\u5019\uff0c<strong>(n &#8211; 1) &amp; hash<\/strong> \u7b97\u5f97\u7684index\u76f8\u540c\u7684\u51e0\u7387\u8f83\u5c0f\uff0c\u6570\u636e\u5728\u6570\u7ec4\u4e0a\u5206\u5e03\u5c31\u6bd4\u8f83\u5747\u5300\uff0c\u4e5f\u5c31\u662f\u8bf4\u78b0\u649e\u7684\u51e0\u7387\u5c0f\uff0c\u76f8\u5bf9\u7684\uff0c\u67e5\u8be2\u7684\u65f6\u5019\u5c31\u4e0d\u7528\u904d\u5386\u67d0\u4e2a\u4f4d\u7f6e\u4e0a\u7684\u94fe\u8868\uff0c\u8fd9\u6837\u67e5\u8be2\u6548\u7387\u4e5f\u5c31\u8f83\u9ad8\u4e86\u3002<\/a><br \/>\nTreeMap\u57fa\u4e8e\u7ea2\u9ed1\u6811\u6570\u636e\u7ed3\u6784\u7684\u5b9e\u73b0\uff0c\u952e\u503c\u53ef\u4ee5\u4f7f\u7528Comparable\u6216Comparator\u63a5\u53e3\u6765\u6392\u5e8f\u3002TreeMap\u7ee7\u627f\u81eaAbstractMap\uff0c\u540c\u65f6\u5b9e\u73b0\u4e86\u63a5\u53e3NavigableMap\uff0c\u800c\u63a5\u53e3NavigableMap\u5219\u7ee7\u627f\u81eaSortedMap\u3002SortedMap\u662fMap\u7684\u5b50\u63a5\u53e3\uff0c\u4f7f\u7528\u5b83\u53ef\u4ee5\u786e\u4fdd\u56fe\u4e2d\u7684\u6761\u76ee\u662f\u6392\u597d\u5e8f\u7684\u3002<br \/>\n\u5728\u5b9e\u9645\u4f7f\u7528\u4e2d\uff0c\u5982\u679c\u66f4\u65b0Map\u65f6\u4e0d\u9700\u8981\u4fdd\u6301\u56fe\u4e2d\u5143\u7d20\u7684\u987a\u5e8f\uff0c\u5c31\u4f7f\u7528HashMap\uff0c\u5982\u679c\u9700\u8981\u4fdd\u6301Map\u4e2d\u5143\u7d20\u7684\u63d2\u5165\u987a\u5e8f\u6216\u8005\u8bbf\u95ee\u987a\u5e8f\uff0c\u5c31\u4f7f\u7528LinkedHashMap\uff0c\u5982\u679c\u9700\u8981\u4f7fMap\u6309\u7167\u952e\u503c\u6392\u5e8f\uff0c\u5c31\u4f7f\u7528TreeMap\u3002<\/p>\n<h3>5\u3001\u5176\u4ed6<\/h3>\n<blockquote>\n<h5>1.Vector<\/h5>\n<p>\u524d\u9762\u6211\u4eec\u5df2\u7ecf\u63d0\u5230\uff0cJava\u8bbe\u8ba1\u8005\u4eec\u5728\u5bf9\u4e4b\u524d\u7684\u5bb9\u5668\u7c7b\u8fdb\u884c\u91cd\u65b0\u8bbe\u8ba1\u65f6\u4fdd\u7559\u4e86\u4e00\u4e9b\u6570\u636e\u7ed3\u6784\uff0c\u5176\u4e2d\u5c31\u6709Vector\u3002\u7528\u6cd5\u4e0a\uff0cVector\u4e0eArrayList\u57fa\u672c\u4e00\u81f4\uff0c\u4e0d\u540c\u4e4b\u5904\u5728\u4e8eVector\u4f7f\u7528\u4e86\u5173\u952e\u5b57synchronized\u5c06\u8bbf\u95ee\u548c\u4fee\u6539\u5411\u91cf\u7684\u65b9\u6cd5\u90fd\u53d8\u6210\u540c\u6b65\u7684\u4e86\uff0c\u6240\u4ee5\u5bf9\u4e8e\u4e0d\u9700\u8981\u540c\u6b65\u7684\u5e94\u7528\u7a0b\u5e8f\u6765\u8bf4\uff0c\u7c7bArrayList\u6bd4\u7c7bVector\u66f4\u9ad8\u6548\u3002<\/p>\n<p align=\"left\">Vector\u975e\u5e38\u7c7b\u4f3cArrayList\uff0c\u4f46\u662fVector\u662f\u540c\u6b65\u7684\u3002\u7531Vector\u521b\u5efa\u7684Iterator\uff0c\u867d\u7136\u548cArrayList\u521b\u5efa\u7684 Iterator\u662f\u540c\u4e00\u63a5\u53e3\uff0c\u4f46\u662f\uff0c\u56e0\u4e3aVector\u662f\u540c\u6b65\u7684\uff0c\u5f53\u4e00\u4e2aIterator\u88ab\u521b\u5efa\u800c\u4e14\u6b63\u5728\u88ab\u4f7f\u7528\uff0c\u53e6\u4e00\u4e2a\u7ebf\u7a0b\u6539\u53d8\u4e86Vector\u7684\u72b6\u6001\uff08\u4f8b\u5982\uff0c\u6dfb\u52a0\u6216\u5220\u9664\u4e86\u4e00\u4e9b\u5143\u7d20\uff09\uff0c\u8fd9\u65f6\u8c03\u7528Iterator\u7684\u65b9\u6cd5\u65f6\u5c06\u629b\u51faConcurrentModificationException\uff0c\u56e0\u6b64\u5fc5\u987b\u6355\u83b7\u8be5\u5f02\u5e38\u3002<strong>\u901a\u8fc7\u4f7f\u7528capacity\u548censurecapacity\u64cd\u4f5c\u4ee5\u53cacapacityIncrement\u57df\u53ef\u4ee5\u4f18\u5316\u5b58\u50a8\u64cd\u4f5c\uff0c\u8fd9\u4e2a\u524d\u9762\u8bb2\u8fc7<\/strong>\uff0c\uff08<strong>Vector\u7684Iterator\u548clistIterator\u65b9\u6cd5\u7ffb\u8bd1\u7684\u8fed\u4ee3\u5668\u652f\u6301fail-fast\u673a\u5236\uff0c\u56e0\u6b64\u5982\u679c\u5728\u4f7f\u7528\u8fed\u4ee3\u5668\u7684\u8fc7\u7a0b\u4e2d\u6709\u5176\u4ed6\u7ebf\u7a0b\u4fee\u6539\u4e86map\uff0c\u90a3\u4e48\u5c06\u629b\u51faConcurrentModificationException\uff0c\u8fd9\u5c31\u662f\u6240\u8c13fail-fast\u7b56\u7565\u3002\u5b98\u65b9\u5bf9\u6b64\u7684\u8bf4\u660e\u662f<\/strong>\u00a0 java.util \u5305\u4e2d\u7684\u96c6\u5408\u7c7b\u90fd\u8fd4\u56de fail-fast\u8fed\u4ee3\u5668\uff0c\u8fd9\u610f\u5473\u7740\u5b83\u4eec\u5047\u8bbe\u7ebf\u7a0b\u5728\u96c6\u5408\u5185\u5bb9\u4e2d\u8fdb\u884c\u8fed\u4ee3\u65f6\uff0c\u96c6\u5408\u4e0d\u4f1a\u66f4\u6539\u5b83\u7684\u5185\u5bb9\u3002\u5982\u679c fail-fast\u8fed\u4ee3\u5668\u68c0\u6d4b\u5230\u5728\u8fed\u4ee3\u8fc7\u7a0b\u4e2d\u8fdb\u884c\u4e86\u66f4\u6539\u64cd\u4f5c\uff0c\u90a3\u4e48\u5b83\u4f1a\u629b\u51fa ConcurrentModificationException\uff0c\u8fd9\u662f\u4e0d\u53ef\u63a7\u5f02\u5e38\u3002\uff09<\/p>\n<h5>2.Stack<\/h5>\n<p>Stack\uff0c\u6808\u7c7b\uff0c\u662fJava2\u4e4b\u524d\u5f15\u5165\u7684\uff0c\u7ee7\u627f\u81ea\u7c7bVector\u3002<\/p>\n<h5>3.HashTable<\/h5>\n<p>HashTable\u548c\u524d\u9762\u4ecb\u7ecd\u7684HashMap\u5f88\u7c7b\u4f3c\uff0c\u5b83\u4e5f\u662f\u4e00\u4e2a\u6563\u5217\u8868\uff0c\u5b58\u50a8\u7684\u5185\u5bb9\u662f\u952e\u503c\u5bf9\u6620\u5c04\uff0c\u4e0d\u540c\u4e4b\u5904\u5728\u4e8e\uff0cHashTable\u662f\u7ee7\u627f\u81eaDictionary\u7684\uff0cHashTable\u4e2d\u7684\u51fd\u6570\u90fd\u662f\u540c\u6b65\u7684\uff0c\u8fd9\u610f\u5473\u7740\u5b83\u4e5f\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\uff0c\u53e6\u5916\uff0cHashTable\u4e2dkey\u548cvalue\u90fd\u4e0d\u53ef\u4ee5\u4e3anull\u3002<br \/>\n\u4e0a\u9762\u7684\u4e09\u4e2a\u96c6\u5408\u7c7b\u90fd\u662f\u5728Java2\u4e4b\u524d\u63a8\u51fa\u7684\u5bb9\u5668\u7c7b\uff0c\u53ef\u4ee5\u770b\u5230\uff0c\u5c3d\u7ba1\u5728\u4f7f\u7528\u4e2d\u6548\u7387\u6bd4\u8f83\u4f4e\uff0c\u4f46\u662f\u5b83\u4eec\u90fd\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\u3002\u4e0b\u9762\u4ecb\u7ecd\u4e24\u4e2a\u7279\u6b8a\u7684\u96c6\u5408\u7c7b\u3002<\/p>\n<h5>4.ConcurrentHashMap<\/h5>\n<p>Concurrent\uff0c\u5e76\u53d1\uff0c\u4ece\u540d\u5b57\u5c31\u53ef\u4ee5\u770b\u51fa\u6765ConcurrentHashMap\u662fHashMap\u7684\u7ebf\u7a0b\u5b89\u5168\u7248\u3002\u540cHashMap\u76f8\u6bd4\uff0cConcurrentHashMap\u4e0d\u4ec5\u4fdd\u8bc1\u4e86\u8bbf\u95ee\u7684\u7ebf\u7a0b\u5b89\u5168\u6027\uff0c\u800c\u4e14\u5728\u6548\u7387\u4e0a\u4e0eHashTable\u76f8\u6bd4\uff0c\u4e5f\u6709\u8f83\u5927\u7684\u63d0\u9ad8\u3002\u5173\u4e8eConcurrentHashMap\u7684\u8bbe\u8ba1\uff0c\u6211\u5c06\u4f1a\u5728\u4e0b\u4e00\u7bc7\u5173\u4e8e\u5e76\u53d1\u7f16\u7a0b\u7684\u535a\u5ba2\u4e2d\u4ecb\u7ecd\uff0c\u656c\u8bf7\u5173\u6ce8\u3002<\/p>\n<h5>5.CopyOnWriteArrayList<\/h5>\n<p>CopyOnWriteArrayList\uff0c\u662f\u4e00\u4e2a\u7ebf\u7a0b\u5b89\u5168\u7684List\u63a5\u53e3\u7684\u5b9e\u73b0\uff0c\u5b83\u4f7f\u7528\u4e86ReentrantLock\u9501\u6765\u4fdd\u8bc1\u5728\u5e76\u53d1\u60c5\u51b5\u4e0b\u63d0\u4f9b\u9ad8\u6027\u80fd\u7684\u5e76\u53d1\u8bfb\u53d6\u3002<\/p><\/blockquote>\n<p>\u53e6\u5916\uff0cCollections\u7c7b\u4e2d\u6709\u5927\u91cf\u4e0e\u5bb9\u5668\u7c7b\u76f8\u5173\u7684\u5de5\u5177\u65b9\u6cd5\u53ef\u4ee5\u4f7f\u7528\uff0c\u6bd4\u5982\u67e5\u627e\u5143\u7d20\u3001\u627e\u6700\u503c\u3001\u9006\u5e8f\u3001shuffle\u7b49\u3002<\/p>\n<h2>\u4e09\u3001\u7ebf\u7a0b\u540c\u6b65<\/h2>\n<p>\u4e0a\u8ff0\u63d0\u5230\u7684\u5bb9\u5668\u7c7b\u9664\u4e86Vector\/Stack\/HashTable\u8fd9\u4e9b\u4e0a\u53e4\u9057\u7559\u4ee3\u7801\uff0c\u4ee5\u53caConcurrentHashMap\/CopyOnWrite\u5bb9\u5668\u8fd9\u4e9b\u4e13\u95e8\u9488\u5bf9\u5e76\u53d1\u60c5\u51b5\u7684\u5bb9\u5668\uff0c\u57fa\u672c\u90fd\u662f\u975e\u540c\u6b65\u7684\uff08unsynchronized\uff09\uff0c\u5982\u9700\u591a\u7ebf\u7a0b\u8bbf\u95ee\u9700\u8981\u81ea\u5df1\u52a0\u4e0a\u540c\u6b65\u76f8\u5173\u4ee3\u7801\u3002<br \/>\n\u5728java.util.concurrent\u5305\u4e2d\u5b9a\u4e49\u7684CopyOnWriteArrayList\u63d0\u4f9b\u4e86\u7ebf\u7a0b\u5b89\u5168\u7684Arraylist\uff0c\u4f46\u662f\u5f53\u8fdb\u884cadd\u548cset\u7b49\u53d8\u5316\u64cd\u4f5c\u65f6\u5b83\u662f\u901a\u8fc7\u4e3a\u5e95\u5c42\u6570\u7ec4\u521b\u5efa\u65b0\u7684\u526f\u672c\u5b9e\u73b0\u7684\uff0c\u6240\u4ee5\u6bd4\u8f83\u8017\u8d39\u8d44\u6e90\u3002\u53ef\u4ee5\u53c2\u8003 <a href=\"http:\/\/coolshell.cn\/articles\/11175.html\">JAVA\u4e2d\u7684COPYONWRITE\u5bb9\u5668<\/a><\/p>\n<h2>\u53c2\u8003<\/h2>\n<p><a href=\"http:\/\/www.jianshu.com\/p\/63e76826e852\">Java &#8211; \u96c6\u5408\u6846\u67b6\u5b8c\u5168\u89e3\u6790<\/a><br \/>\n<a id=\"cb_post_title_url\" class=\"postTitle2\" href=\"http:\/\/www.cnblogs.com\/davidIsOK\/p\/3916574.html\">java\u7684\u96c6\u5408\u6846\u67b6\u6700\u5168\u8be6\u89e3\uff08\u56fe\uff09<\/a><br \/>\n&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u6587\u5c31\u662f\u60f3\u5b66\u4e60\u3001\u7b80\u5355\u603b\u7ed3\u4e00\u4e0bJDK\u91cc\u7684JCF\uff0c\u5e76\u4e14\u5236\u5b9a\u4e00\u4e0b\u81ea\u5df1\u540e\u7eed\u9605\u8bfb\u6e90\u7801\u7684\u8303\u56f4\u2014\u2014\u5148\u5b66\u4e60\u4e00\u4e0bJCF\u4e2d\u91cd\u8981\u7684\u4e00 <a href='http:\/\/prayerlaputa.com\/?p=316' class='excerpt-more'>[&#8230;]<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"categories":[6,12,18],"tags":[33,44,50],"_links":{"self":[{"href":"http:\/\/prayerlaputa.com\/index.php?rest_route=\/wp\/v2\/posts\/316"}],"collection":[{"href":"http:\/\/prayerlaputa.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/prayerlaputa.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/prayerlaputa.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/prayerlaputa.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=316"}],"version-history":[{"count":0,"href":"http:\/\/prayerlaputa.com\/index.php?rest_route=\/wp\/v2\/posts\/316\/revisions"}],"wp:attachment":[{"href":"http:\/\/prayerlaputa.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=316"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/prayerlaputa.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=316"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/prayerlaputa.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=316"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}