{"rsdb":{"rid":"285962","subhead":"","postdate":"0","aid":"202588","fid":"76","uid":"1","topic":"1","content":"<div class=\"entry\"> \n <div class=\"copyright-area\">\n  \u672c\u6587\u7531 \n  <a>ImportNew<\/a> - \n  <a>\u5510\u5c24\u534e<\/a> \u7ffb\u8bd1\u81ea \n  <a class=\"external\" rel=\"nofollow\">way2<a href=https:\/\/www.cppentry.com style=text-decoration:underline;font-size:14px;color:#F70968; target=_blank>java<\/a><\/a>\u3002\u6b22\u8fce\u52a0\u5165\n  <a class=\"external\" rel=\"nofollow\" target=\"_blank\">\u7ffb\u8bd1\u5c0f\u7ec4<\/a>\u3002\u8f6c\u8f7d\u8bf7\u89c1\u6587\u672b\u8981\u6c42\u3002\n <\/div> \n <h3>1. \u7b80\u4ecb<\/h3> \n <p>JDK1.2 \u5f15\u5165\u4e86 Java \u96c6\u5408\u6846\u67b6\uff0c\u5305\u542b\u4e00\u7ec4\u6570\u636e\u7ed3\u6784\u3002\u4e0e\u6570\u7ec4\u4e0d\u540c\uff0c\u8fd9\u4e9b\u6570\u636e\u7ed3\u6784\u7684\u5b58\u50a8\u7a7a\u95f4\u4f1a\u968f\u7740\u5143\u7d20\u6dfb\u52a0\u52a8\u6001\u589e\u52a0\u3002\u5176\u4e2d\uff0c\u4e00\u4e9b\u652f\u6301\u6dfb\u52a0\u91cd\u590d\u5143\u7d20\u53e6\u4e00\u4e9b\u4e0d\u652f\u6301\uff0c\u4e00\u4e9b\u652f\u6301 null\uff0c\u4e00\u4e9b\u80fd\u81ea\u52a8\u5347\u5e8f\u6253\u5370\u5143\u7d20\u3002<\/p> \n <p>\u6240\u6709\u8fd9\u4e9b\u6570\u636e\u7ed3\u6784\u5728 <a href=https:\/\/www.cppentry.com style=text-decoration:underline;font-size:14px;color:#F70968; target=_blank>java<\/a>.util \u5305\u91cc\uff0c\u5305\u542b\u4e86 Collection\u3001List\u3001Set\u3001Map\u3001SortedMap \u63a5\u53e3\u3002\u8fd9\u4e9b\u63a5\u53e3\u7684\u5b9e\u73b0\u7c7b\u6709 LinkedList\u3001TreeSet\u3001ArrayList\u3001HashMap \u7b49\u3002<span style=\"font-weight: normal;\">\u9664\u4e86\u8fd9\u4e9b\u6570\u636e\u7ed3\u6784\uff0cjava.util \u5305\u8fd8\u63d0\u4f9b\u4e86&nbsp;Date\u3001GregorianCalender\u3001StringTokenizer\u3001Random \u8fd9\u6837\u7684\u5de5\u5177\u7c7b\u3002<\/span><\/p> \n <h3>2. \u5206\u7c7b<\/h3> \n <p>\u53ef\u4ee5\u6309\u7167\u63a5\u53e3\u3001\u5b9e\u73b0\u3001\u7b97\u6cd5\u4e09\u4e2a\u65b9\u9762\u5bf9\u96c6\u5408\u6846\u67b6\u4e2d\u7684\u6570\u636e\u7ed3\u6784\u8fdb\u884c\u5206\u7c7b\uff1a<\/p> \n <ul> \n  <li>\u63a5\u53e3\uff1aCollection\u3001List\u3001Map \u7ec4\u6210\u4e86\u96c6\u5408\u6846\u67b6\u4e2d\u6240\u6709\u5177\u4f53\u5b9e\u73b0\u7c7b\u7684\u63a5\u53e3\uff0c\u5b83\u4eec\u5b9a\u4e49\u4e86\u5b50\u7c7b\u5fc5\u987b\u5b9e\u73b0\u7684\u65b9\u6cd5\uff0c\u975e\u5e38\u597d\u8bb0\u3002\u6bd4\u5982\u5411\u96c6\u5408\u6dfb\u52a0\u5143\u7d20\uff0c\u4f1a\u7528\u5230 Collection \u4e2d\u5b9a\u4e49\u7684 add() \u65b9\u6cd5<\/li> \n  <li>\u5b9e\u73b0\uff1a\u6240\u6709\u5b9e\u73b0\u4e86\u4e0a\u8ff03\u4e2a\u63a5\u53e3\u7684\u7c7b\uff0c\u90fd\u88ab\u79f0\u4f5c\u96c6\u5408\u6846\u67b6\uff0c\u5b9e\u9645\u4e0a\u5c31\u662f\u6570\u636e\u7ed3\u6784\u3002\u6bd4\u5982 LinkedList\u3001TreeSet \u7b49<\/li> \n  <li>\u7b97\u6cd5\uff1a\u96c6\u5408\u6846\u67b6\u63d0\u4f9b\u4e86\u5f88\u591a\u53ef\u4ee5\u76f4\u63a5\u8c03\u7528\u7684\u7b97\u6cd5\uff0c\u6bd4\u5982\u6c42\u6700\u5927\u6700\u5c0f\u503c\u3001\u6392\u5e8f\u3001\u586b\u5145\u7b49<\/li> \n <\/ul> \n <h3>3. \u4f18\u7f3a\u70b9<\/h3> \n <p>\u6709\u4ee5\u4e0b4\u4e2a\u4f18\u70b9<\/p> \n <ul> \n  <li>\u51cf\u5c11\u5de5\u4f5c\u91cf\u7684\u540c\u65f6\u589e\u52a0\u4e86\u8f6f\u4ef6\u7684\u53ef\u7528\u6027\uff1a\u4e0d\u9700\u8981\u6bcf\u4e2a\u7a0b\u5e8f\u5458\u52a8\u624b\u5b9e\u73b0\u6392\u5e8f\u3001\u67e5\u627e\u3001\u627e\u51fa\u5143\u7d20\u5728\u6570\u636e\u7ed3\u6784\u4e2d\u51fa\u73b0\u7684\u6b21\u6570<\/li> \n  <li>\u6267\u884c\u901f\u5ea6\u66f4\u5feb\u66f4\u6301\u4e45\uff1a\u96c6\u5408\u6846\u67b6\u7684\u5e95\u5c42\u6570\u636e\u7ed3\u6784\u5206\u4e3a\u4e24\u7c7b\uff0c\u57fa\u4e8e\u8282\u70b9\u7684\u548c\u57fa\u4e8e\u6570\u7ec4\u7684\uff0c\u524d\u8005\u5728\u9891\u7e41\u6dfb\u52a0\u65f6\u6548\u7387\u66f4\u9ad8\uff0c\u540e\u8005\u5728\u9891\u7e41\u8bfb\u53d6\u65f6\u901f\u5ea6\u66f4\u5feb\u3002\u4e00\u4e9b\u6570\u636e\u7ed3\u6784\u662f&nbsp;synchronized \u7ebf\u7a0b\u5b89\u5168\u7684\uff0c\u4f46\u4f1a\u5f71\u54cd\u901f\u5ea6\u6709\uff0c\u53e6\u4e00\u4e9b\u5219\u4e0d\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\u3002\u7a0b\u5e8f\u5458\u5728\u9009\u7528\u6570\u636e\u7ed3\u6784\u524d\u8981\u6e05\u695a\u5730\u4e86\u89e3\u8fd9\u4e9b\u56e0\u7d20<\/li> \n  <li>\u4e92\u64cd\u4f5c\u4e0e\u8f6c\u6362\uff1a\u7531\u4e8e\u5b9e\u73b0\u4e86 Collection \u63a5\u53e3\uff0c\u6570\u636e\u7ed3\u6784\u4e4b\u95f4\u662f\u53ef\u4ee5\u76f8\u4e92\u8f6c\u6362\u7684\u3002\u53ef\u4ee5 clone\uff0c\u53ef\u4ee5\u628a\u73b0\u6709\u7684\u7ed3\u6784\u8f6c\u6210&nbsp;synchronized \u7248\u672c\uff0c\u8fd8\u53ef\u4ee5\u5728\u628a\u57fa\u4e8e\u94fe\u8868\u7684\u6570\u636e\u7ed3\u6784\u8f6c\u4e3a\u57fa\u4e8e\u6570\u7ec4\u7684\u7ed3\u6784<\/li> \n <\/ul> \n <p>\u6709\u4ee5\u4e0b2\u4e2a\u7f3a\u70b9<\/p> \n <ul> \n  <li>\u5f53\u5fc3\u7c7b\u578b\u8f6c\u6362\uff1a\u5728\u96c6\u5408\u6846\u67b6\u7c7b\u4e4b\u95f4\u8fdb\u884c\u8f6c\u6362\u65f6\u8981\u5927\u5927\u5730\u5c0f\u5fc3\uff0c\u5c24\u5176\u8981\u8003\u8651\u6cdb\u578b\u7c7b\u578b\u7684\u517c\u5bb9\u6027<\/li> \n  <li>\u8fd0\u884c\u65f6\u7c7b\u578b\u68c0\u67e5\uff1a\u96c6\u5408\u6846\u67b6\u5728\u8fd0\u884c\u65f6\u4f1a\u629b\u51fa\u5f02\u5e38\uff0c\u9700\u8981\u7f16\u7a0b\u65f6\u591a\u52a0\u6ce8\u610f<\/li> \n <\/ul> \n <h3>4. \u7ee7\u627f\u4f53\u7cfb<\/h3> \n <p>java.util \u4e2d\u7684\u6570\u636e\u7ed3\u6784\u7ee7\u627f\u4f53\u7cfb\u5206\u4e3a\u4e24\u5927\u7c7b\uff0c\u4e00\u7c7b\u5b9e\u73b0\u4e86 Collection \u63a5\u53e3\uff0c\u4e00\u7c7b\u5b9e\u73b0\u4e86 Map \u63a5\u53e3\u3002<\/p> \n <p style=\"text-align: center;\"><a rel=\"attachment wp-att-31230\"><img title=\"1024px-Java.util.Collection_hierarchy.svg\" src=\"http:\/\/incdn1.b0.upaiyun.com\/2019\/01\/6228294319552bf1de846f3f201067e2.png\" alt=\"Collection \u7ee7\u627f\u4f53\u7cfb\" \/><\/a>Collection \u7ee7\u627f\u4f53\u7cfb\uff08\u56fe\u7247\u6765\u81eaWikipedia\uff09<\/p> \n <p><a rel=\"attachment wp-att-31235\"><img title=\"1280px-Java.util.Map_hierarchy.svg\" src=\"http:\/\/incdn1.b0.upaiyun.com\/2019\/01\/2c3d0d7188afaf9b7f0f0846273c6eaa.png\" alt=\"Map \u7ee7\u627f\u4f53\u7cfb\" \/><\/a><\/p> \n <p style=\"text-align: center;\">Map \u7ee7\u627f\u4f53\u7cfb\uff08\u56fe\u7247\u6765\u81eaWikipedia\uff09<\/p> \n <p>\u96c6\u5408\u6846\u67b6\u6838\u5fc3\u63a5\u53e3\u53ca\u5b9e\u73b0\u7c7b\uff1a<\/p> \n <ul> \n  <li>Collection\uff1a\u6839\u63a5\u53e3\uff0c\u5927\u90e8\u5206\u6570\u636e\u7ed3\u6784\u90fd\u5b9e\u73b0\u4e86 Collection \u63a5\u53e3\u4e2d\u7684\u65b9\u6cd5<\/li> \n  <li>Set\uff1a\u5b9e\u73b0 Set \u63a5\u53e3\u7684\u6570\u636e\u7ed3\u6784\u4e0d\u5141\u8bb8\u91cd\u590d\u7684\u5143\u7d20\uff0c\u4f8b\u5982 HashSet\u3001LinkedHashSet<\/li> \n  <li>SortedSet\uff1a\u5b9e\u73b0 SortedSet \u63a5\u53e3\u7684\u6570\u636e\u7ed3\u6784\u9ed8\u8ba4\u53ef\u6309\u5347\u5e8f\u6253\u5370\u5143\u7d20\uff0c\u4f8b\u5982&nbsp;TreeSet<\/li> \n  <li>List\uff1a\u5b9e\u73b0 List \u63a5\u53e3\u7684\u6570\u636e\u7ed3\u6784\u5141\u8bb8\u91cd\u590d\u5143\u7d20\uff0c\u53ef\u901a\u8fc7 index \u8bbf\u95ee\u5143\u7d20\uff0c\u4f8b\u5982 LinkedList\u3001ArrayList\u3001Vector<\/li> \n  <li>Map\uff1a\u5b9e\u73b0 Map \u63a5\u53e3\u7684\u6570\u636e\u7ed3\u6784\u5b58\u50a8\u952e\u503c\u5bf9\uff0c\u4e0d\u5141\u8bb8\u91cd\u590d\u7684 key\uff0c\u4f8b\u5982 HashMap\u3001LinkedHashMap\u3001Hashtable<\/li> \n  <li>SortedMap\uff1a\u7ee7\u627f\u4e86 Map \u63a5\u53e3\uff0c\u5b58\u50a8\u952e\u503c\u5bf9\uff0c\u4e0d\u5141\u8bb8\u91cd\u590d\u7684 key\uff0c\u9ed8\u8ba4\u53ef\u6309 key \u5347\u5e8f\u6253\u5370\u5143\u7d20\uff0c\u4f8b\u5982 TreeMap<\/li> \n <\/ul> \n <p>SortedSet \u4e0e SortedMap \u9ed8\u8ba4\u7684\u6392\u5e8f\u662f\u81ea\u7136\u5e8f\uff0c\u53ef\u901a\u8fc7 Comparator \u6216 Comparable \u63a5\u53e3\u5b9e\u73b0\u81ea\u5b9a\u4e49\u6392\u5e8f\u3002<\/p> \n <p>\u5728\u63a5\u53e3\u4e0e\u5177\u4f53\u7684\u5b9e\u73b0\u7c7b\u4e4b\u95f4\u8fd8\u6709\u4e00\u4e9b\u62bd\u8c61\u7c7b\uff0c\u5982\u4e0b\u56fe\uff1a<\/p> \n <p><a rel=\"attachment wp-att-31240\"><img class=\"aligncenter size-full wp-image-31240\" title=\"ss38\" src=\"http:\/\/incdn1.b0.upaiyun.com\/2019\/01\/e54c687933871c26c726a5fe22df9fcc.png\" alt=\"\" \/><\/a><\/p> \n <p>\u8fd9\u4e9b\u62bd\u8c61\u7c7b\u4e3a\u96c6\u5408\u589e\u52a0\u4e86\u5f88\u591a\u529f\u80fd\uff1a<\/p> \n <ul> \n  <li>HashSet\uff1a\u5b9e\u73b0 Set \u63a5\u53e3\uff0c\u4e0d\u5141\u8bb8\u91cd\u590d\u7684\u5143\u7d20\uff0c\u5e95\u5c42\u6570\u636e\u7ed3\u6784 hash table<\/li> \n  <li>LinkedHashSet\uff1a\u5b9e\u73b0 Set \u63a5\u53e3\uff0c\u4e0d\u5141\u8bb8\u91cd\u590d\u7684\u5143\u7d20\uff0c\u5e95\u5c42\u6570\u636e\u7ed3\u6784 hash table \u4e0e\u53cc\u94fe\u8868<\/li> \n  <li>TreeSet\uff1a\u5b9e\u73b0 NavigableSet \u63a5\u53e3\uff0c\u4e0d\u5141\u8bb8\u91cd\u590d\u7684\u5143\u7d20\uff0c\u5e95\u5c42\u6570\u636e\u7ed3\u6784\u7ea2\u9ed1\u6811<\/li> \n  <li>ArrayList\uff1a\u5b9e\u73b0 List \u63a5\u53e3\uff0c\u5141\u8bb8\u91cd\u590d\u5143\u7d20\uff0c\u5e95\u5c42\u6570\u636e\u7ed3\u6784\u53ef\u53d8\u6570\u7ec4<\/li> \n  <li>LinkedList\uff1a\u5b9e\u73b0&nbsp;List&nbsp;\u63a5\u53e3\uff0c\u5141\u8bb8\u91cd\u590d\u5143\u7d20\uff0c\u5e95\u5c42\u6570\u636e\u7ed3\u6784\u53cc\u94fe\u8868<\/li> \n  <li>Vector\uff1a\u5b9e\u73b0&nbsp;List&nbsp;\u63a5\u53e3\uff0c\u5141\u8bb8\u91cd\u590d\u5143\u7d20\uff0c\u5e95\u5c42\u6570\u636e\u7ed3\u6784\u53ef\u53d8\u6570\u7ec4<\/li> \n  <li>HashMap\uff1a\u5b9e\u73b0 Map \u63a5\u53e3\uff0c\u4e0d\u5141\u8bb8\u91cd\u590d\u7684 key\uff0c\u5e95\u5c42\u6570\u636e\u7ed3\u6784 hash table<\/li> \n  <li>LinkedHashMap\uff1a\u5b9e\u73b0 Map \u63a5\u53e3\uff0c\u4e0d\u5141\u8bb8\u91cd\u590d\u7684 key\uff0c\u5e95\u5c42\u6570\u636e\u7ed3\u6784&nbsp;hash table \u4e0e\u53cc\u94fe\u8868<\/li> \n  <li>HashTable\uff1a\u5b9e\u73b0 Map \u63a5\u53e3\uff0c\u4e0d\u5141\u8bb8\u91cd\u590d\u7684 key\uff0c\u5e95\u5c42\u6570\u636e\u7ed3\u6784&nbsp;hash table<\/li> \n  <li>TreeMap\uff1a\u5b9e\u73b0 SortedMap \u63a5\u53e3\uff0c\u4e0d\u5141\u8bb8\u91cd\u590d\u7684 key\uff0c\u5e95\u5c42\u6570\u636e\u7ed3\u6784\u7ea2\u9ed1\u6811<\/li> \n <\/ul> \u539f\u6587\u94fe\u63a5\uff1a \n <a class=\"external\" rel=\"nofollow\">way2java<\/a> \u7ffb\u8bd1\uff1a \n <a> ImportNew.com <\/a> - \n <a>\u5510\u5c24\u534e<\/a>\n <br \/>\u8bd1\u6587\u94fe\u63a5\uff1a \n <a>http:\/\/www.importnew.com\/31223.html<\/a>\n <br \/>[ \n <span style=\"color:#ff0000\"><b>\u8f6c\u8f7d\u8bf7\u4fdd\u7559\u539f\u6587\u51fa\u5904\u3001\u8bd1\u8005\u548c\u8bd1\u6587\u94fe\u63a5\u3002<\/b><\/span>]\n <br \/>\n <br \/> \n <!-- BEGIN #author-bio --> \n <div id=\"author-bio\"> \n  <h3 class=\"widget-title\"> \u5173\u4e8e\u4f5c\u8005\uff1a <a>\u5510\u5c24\u534e<\/a> <\/h3> \n  <div class=\"alignleft\"> \n   <a> <img src=\"http:\/\/www.importnew.com\/wp-content\/uploads\/userphoto\/15.thumbnail.jpg\" alt=\"\u5510\u5c24\u534e\" width=\"50\" height=\"50\" class=\"photo\" \/> <\/a> \n  <\/div> \n  <p>\u6211\u559c\u6b22\u7a0b\u5e8f\u5458\uff0c\u4ed6\u4eec\u5355\u7eaf\u3001\u56fa\u6267\u3001\u5bb9\u6613\u4f53\u4f1a\u5230\u6210\u5c31\u611f\uff1b\u9762\u5bf9\u538b\u529b\uff0c\u80fd\u591f\u6311\u706f\u591c\u6218\u4e0d\u7720\u4e0d\u4f11\uff1b\u9762\u5bf9\u56f0\u96be\uff0c\u80fd\u591f\u8fce\u96be\u800c\u4e0a\u6311\u6218\u81ea\u6211\u3002\u4ed6\u4eec\u4e5f\u4f1a\u611f\u5230\u56f0\u60d1\u4e0e\u508d\u5fa8\uff0c\u4f46\u6bcf\u4e2a\u7a0b\u5e8f\u5458\u7684\u5fc3\u4e2d\u90fd\u6709\u4e00\u4e2a\u6bd4\u5c14\u76d6\u8328\u6216\u662f\u4e54\u5e03\u65af\u7684\u68a6\u60f3\u201c\u7528\u667a\u6167\u5f00\u521b\u5c5e\u4e8e\u81ea\u5df1\u7684\u4e8b\u4e1a\u201d\u3002\u6211\u60f3\u8bf4\u7684\u662f\uff0c\u5176\u5b9e\u6211\u662f\u4e00\u4e2a\u7a0b\u5e8f\u5458\u3002\uff08\u65b0\u6d6a\u5fae\u535a\uff1a<strong><a class=\"external\" rel=\"nofollow\" target=\"_blank\">@\u5510\u5c24\u534e<\/a><\/strong>\uff09<\/p> \n  <p> <a>\u67e5\u770b\u5510\u5c24\u534e\u7684\u66f4\u591a\u6587\u7ae0 &gt;&gt; <\/a> <\/p> \n  <div 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