锘??xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/"><channel><title>&#20122;&#27954;&#31934;&#21697;&#35270;&#39057;&#20813;&#36153;&#30475;&#44;&#22269;&#20135;&#25104;&#20154;&#20154;&#32508;&#21512;&#20122;&#27954;&#27431;&#32654;&#19969;&#39321;&#33457;&#13;&#44;&#20122;&#27954;&#65;&#86;&#26085;&#38889;&#31934;&#21697;&#20037;&#20037;&#20037;&#20037;</title><link>http://www.tkk7.com/iceblock/category/49387.html</link><description /><language>zh-cn</language><lastBuildDate>Fri, 21 Oct 2011 09:20:51 GMT</lastBuildDate><pubDate>Fri, 21 Oct 2011 09:20:51 GMT</pubDate><ttl>60</ttl><item><title>HashMap,LinkedHashMap,TreeMap錛孒ashTable鐨勫尯鍒?</title><link>http://www.tkk7.com/iceblock/archive/2011/10/21/361694.html</link><dc:creator>iceblock</dc:creator><author>iceblock</author><pubDate>Fri, 21 Oct 2011 01:58:00 GMT</pubDate><guid>http://www.tkk7.com/iceblock/archive/2011/10/21/361694.html</guid><wfw:comment>http://www.tkk7.com/iceblock/comments/361694.html</wfw:comment><comments>http://www.tkk7.com/iceblock/archive/2011/10/21/361694.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/iceblock/comments/commentRss/361694.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/iceblock/services/trackbacks/361694.html</trackback:ping><description><![CDATA[<div><span style="font-family: Arial, Helvetica, simsun, u5b8bu4f53; line-height: 25px; text-align: left; background-color: #ffffff; ">java涓烘暟鎹粨鏋勪腑鐨勬槧灝勫畾涔変簡涓�涓帴鍙ava.util.Map;瀹冩湁鍥涗釜瀹炵幇綾?鍒嗗埆鏄疕ashMap Hashtable LinkedHashMap 鍜孴reeMap</span><br style="line-height: 25px; font-family: Arial, Helvetica, simsun, u5b8bu4f53; text-align: left; background-color: #ffffff; " /><span style="font-family: Arial, Helvetica, simsun, u5b8bu4f53; line-height: 25px; text-align: left; background-color: #ffffff; ">Map涓昏鐢ㄤ簬瀛樺偍鍋ュ�煎錛屾牴鎹敭寰楀埌鍊鹼紝鍥犳涓嶅厑璁擱敭閲嶅(閲嶅浜嗚鐩栦簡),浣嗗厑璁稿�奸噸澶嶃�?br /></span>----------------------------------------------------------------<br style="line-height: 25px; font-family: Arial, Helvetica, simsun, u5b8bu4f53; text-align: left; background-color: #ffffff; " /><span style="font-family: Arial, Helvetica, simsun, u5b8bu4f53; line-height: 25px; text-align: left; background-color: #ffffff; ">HashMap 鏄竴涓渶甯哥敤鐨凪ap,瀹冩牴鎹敭鐨凥ashCode 鍊煎瓨鍌ㄦ暟鎹?鏍規(guī)嵁閿彲浠ョ洿鎺ヨ幏鍙栧畠鐨勫�鹼紝鍏鋒湁寰堝揩鐨勮闂�熷害錛岄亶鍘嗘椂錛屽彇寰楁暟鎹殑欏哄簭鏄畬鍏ㄩ殢鏈虹殑銆侶ashMap鏈�澶氬彧鍏佽涓�鏉¤褰曠殑閿負Null;鍏佽澶氭潯璁板綍鐨勫�間負 Null;<br />HashMap涓嶆敮鎸佺嚎紼嬬殑鍚屾錛屽嵆浠諱竴鏃跺埢鍙互鏈夊涓嚎紼嬪悓鏃跺啓HashMap;鍙兘浼氬鑷存暟鎹殑涓嶄竴鑷淬�傚鏋滈渶瑕佸悓姝ワ紝鍙互鐢?Collections鐨剆ynchronizedMap鏂規(guī)硶浣縃ashMap鍏鋒湁鍚屾鐨勮兘鍔涳紝鎴栬�呬嬌鐢–oncurrentHashMap銆?br /></span>-----------------------------------------------------------------<br style="line-height: 25px; font-family: Arial, Helvetica, simsun, u5b8bu4f53; text-align: left; background-color: #ffffff; " /><span style="font-family: Arial, Helvetica, simsun, u5b8bu4f53; line-height: 25px; text-align: left; background-color: #ffffff; ">Hashtable涓?HashMap綾諱技,瀹冪戶鎵胯嚜Dictionary綾伙紝涓嶅悓鐨勬槸:瀹冧笉鍏佽璁板綍鐨勯敭鎴栬�呭�間負絀?瀹冩敮鎸佺嚎紼嬬殑鍚屾錛屽嵆浠諱竴鏃跺埢鍙湁涓�涓嚎紼嬭兘鍐橦ashtable,鍥犳涔熷鑷翠簡 Hashtable鍦ㄥ啓鍏ユ椂浼氭瘮杈冩參銆?br /></span><div>-----------------------------------------------------------------</div><div>LinkedHashMap淇濆瓨浜嗚褰曠殑鎻掑叆欏哄簭錛屽湪鐢↖terator閬嶅巻LinkedHashMap鏃訛紝鍏堝緱鍒扮殑璁板綍鑲畾鏄厛鎻掑叆鐨?涔熷彲浠ュ湪鏋勯�犳椂鐢ㄥ甫鍙傛暟錛屾寜鐓у簲鐢ㄦ鏁版帓搴忋�傚湪閬嶅巻鐨勬椂鍊欎細姣擧ashMap鎱紝涓嶈繃鏈夌鎯呭喌渚嬪錛屽綋HashMap瀹歸噺寰堝ぇ錛屽疄闄呮暟鎹緝?yōu)畱鏃跺Q岄亶鍘嗚搗鏉ュ彲鑳戒細姣擫inkedHashMap鎱紝鍥犱負LinkedHashMap鐨勯亶鍘嗛�熷害鍙拰瀹為檯鏁版嵁鏈夊叧錛屽拰瀹歸噺鏃犲叧錛岃�孒ashMap鐨勯亶鍘嗛�熷害鍜屼粬鐨勫閲忔湁鍏熾�?br />-----------------------------------------------------------------<br /><div><span style="font-family: Arial, Helvetica, simsun, u5b8bu4f53; line-height: 25px; text-align: left; background-color: #ffffff; ">TreeMap瀹炵幇SortMap鎺ュ彛錛岃兘澶熸妸瀹冧繚瀛樼殑璁板綍鏍規(guī)嵁閿帓搴?榛樿鏄寜閿�肩殑鍗囧簭鎺掑簭錛屼篃鍙互鎸囧畾鎺掑簭鐨勬瘮杈冨櫒錛屽綋鐢↖terator 閬嶅巻TreeMap鏃訛紝寰楀埌鐨勮褰曟槸鎺掕繃搴忕殑銆?br />------------------------------------------------------------------------------------------<br />鎬葷粨錛?br /></span><div>涓�鑸儏鍐典笅錛屾垜浠敤鐨勬渶澶氱殑鏄疕ashMap,HashMap閲岄潰瀛樺叆鐨勯敭鍊煎鍦ㄥ彇鍑虹殑鏃跺�欐槸闅忔満鐨?瀹冩牴鎹敭鐨凥ashCode鍊煎瓨鍌ㄦ暟鎹?鏍規(guī)嵁閿彲浠ョ洿鎺ヨ幏鍙栧畠鐨勫�鹼紝鍏鋒湁寰堝揩鐨勮闂�熷害銆傚湪Map 涓彃鍏ャ�佸垹闄ゅ拰瀹氫綅鍏冪礌錛孒ashMap 鏄渶濂界殑閫夋嫨銆?br />TreeMap鍙栧嚭鏉ョ殑鏄帓搴忓悗鐨勯敭鍊煎銆備絾濡傛灉鎮(zhèn)ㄨ鎸夎嚜鐒墮『搴忔垨鑷畾涔夐『搴忛亶鍘嗛敭錛岄偅涔圱reeMap浼氭洿濂姐�?br />LinkedHashMap 鏄疕ashMap鐨勪竴涓瓙綾伙紝濡傛灉闇�瑕佽緭鍑虹殑欏哄簭鍜岃緭鍏ョ殑鐩稿悓,閭ｄ箞鐢↙inkedHashMap鍙互瀹炵幇,瀹冭繕鍙互鎸夎鍙栭『搴忔潵鎺掑垪錛屽儚榪炴帴姹犱腑鍙互搴旂敤銆?/div></div></div></div><img src ="http://www.tkk7.com/iceblock/aggbug/361694.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/iceblock/" target="_blank">iceblock</a> 2011-10-21 09:58 <a href="http://www.tkk7.com/iceblock/archive/2011/10/21/361694.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>String StringBuffer StringBuilder鍖哄埆</title><link>http://www.tkk7.com/iceblock/archive/2011/10/18/361519.html</link><dc:creator>iceblock</dc:creator><author>iceblock</author><pubDate>Tue, 18 Oct 2011 05:05:00 GMT</pubDate><guid>http://www.tkk7.com/iceblock/archive/2011/10/18/361519.html</guid><wfw:comment>http://www.tkk7.com/iceblock/comments/361519.html</wfw:comment><comments>http://www.tkk7.com/iceblock/archive/2011/10/18/361519.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/iceblock/comments/commentRss/361519.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/iceblock/services/trackbacks/361519.html</trackback:ping><description><![CDATA[<div><div>String 鏄笉鍙彉鐨勫璞? 鍥犳鍦ㄦ瘡嬈″ String 綾誨瀷榪涜鏀瑰彉鐨勬椂鍊欏叾瀹為兘絳夊悓浜庣敓鎴愪簡涓�涓柊鐨?String 瀵硅薄錛岀劧鍚庡皢鎸囬拡鎸囧悜鏂扮殑String 瀵硅薄錛屾墍浠ョ粡甯告敼鍙樺唴瀹圭殑瀛楃涓叉渶濂戒笉瑕佺敤 String銆傚洜涓烘瘡嬈＄敓鎴愬璞￠兘浼氬緋葷粺鎬ц兘浜х敓褰卞搷錛岀壒鍒綋鍐呭瓨涓棤寮曠敤瀵硅薄澶氫簡浠ュ悗錛?JVM 鐨?GC 灝變細寮�濮嬪伐浣滐紝閭ｉ�熷害鏄竴瀹氫細鐩稿綋鎱㈢殑銆?/div><div>-------------------------------------------------------------------------------------</div><div>StringBuffer 姣忔緇撴灉閮戒細瀵?StringBuffer 瀵硅薄鏈韓榪涜鎿嶄綔錛岃�屼笉鏄敓鎴愭柊鐨勫璞★紝鍐嶆敼鍙樺璞″紩鐢ㄣ�傜嚎紼嬪畨鍏?/div><div>-----------------------------------------------------------------------------------------</div><div>StringBuilder 鐢ㄥ湪瀛楃涓茬紦鍐插尯琚崟涓嚎紼嬩嬌鐢ㄧ殑鏃跺�?&nbsp; &nbsp;綰跨▼涓嶅畨鍏?br /><br />------------------------------------------------------------------------------------------<br /><div><p style="font-family: Verdana, Geneva, Arial, Helvetica, sans-serif; ">1.濡傛灉瑕佹搷浣滃皯閲忕殑鏁版嵁鐢?= String</p><p style="font-family: Verdana, Geneva, Arial, Helvetica, sans-serif; ">2.鍗曠嚎紼嬫搷浣滃瓧絎︿覆緙撳啿鍖?涓嬫搷浣滃ぇ閲忔暟鎹?= StringBuilder</p><p style="font-family: Verdana, Geneva, Arial, Helvetica, sans-serif; ">3.澶氱嚎紼嬫搷浣滃瓧絎︿覆緙撳啿鍖?涓嬫搷浣滃ぇ閲忔暟鎹?= StringBuffer</p></div></div></div><img src ="http://www.tkk7.com/iceblock/aggbug/361519.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/iceblock/" target="_blank">iceblock</a> 2011-10-18 13:05 <a href="http://www.tkk7.com/iceblock/archive/2011/10/18/361519.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item></channel></rss>                                  <footer>
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