锘??xml version="1.0" encoding="utf-8" standalone="yes"?>超碰在线最新网址,国产成人精品av,中文在线天堂网http://www.aygfsteel.com/jbrg2008/category/28649.html浜轟互閾滀負闀?鍙互姝h。鍐?浠ュ彜涓洪暅,鍙互瑙佸叴鏇?浠ヤ漢涓洪暅,鍙互鐭ュ緱澶?zh-cnThu, 10 Jan 2008 23:38:28 GMTThu, 10 Jan 2008 23:38:28 GMT60String涓笁縐嶅姞娉曠殑鍖哄埆http://www.aygfsteel.com/jbrg2008/archive/2008/01/09/173862.html緲版灄緲版灄Wed, 09 Jan 2008 00:19:00 GMThttp://www.aygfsteel.com/jbrg2008/archive/2008/01/09/173862.htmlhttp://www.aygfsteel.com/jbrg2008/comments/173862.htmlhttp://www.aygfsteel.com/jbrg2008/archive/2008/01/09/173862.html#Feedback0http://www.aygfsteel.com/jbrg2008/comments/commentRss/173862.htmlhttp://www.aygfsteel.com/jbrg2008/services/trackbacks/173862.html

JAVA鐨勭‘鏄竴縐嶄護紼嬪簭鍛橀櫡鍏ヤ袱闅懼鍦扮殑璇█, 紜垏鐨勮鏄濇兂. 瀹冩彁渚涗簡濡傛涓板瘜鐨刲ibrary,璁╃▼搴忓憳鑳藉寰堝鏄撶殑鍐欏嚭鍔熻兘寮哄ぇ鐨勭▼搴? 鍚屾椂瀹冧篃灝佽浜嗗姝ゅ鐨勭粏鑺? 璁╃▼搴忓憳鑳藉杞繪槗鐨勫啓鍑哄緢鎷欑暐鐨勭▼搴? 瀹冩墍浠h〃鐨刼bject鎸囧悜鎬濇兂璁捐涔嬪垵鏄負浜嗘妸紼嬪簭鍛樹粠綰風箒澶嶆潅鐨勭紪紼嬬粏鑺備腑瑙f斁鍑烘潵,鏉ヨ揪鍒板宸叉湁紼嬪簭鐨勫埄鐢? 浣嗘槸鍦ㄧ紪紼?nbsp;瀹為檯涓婂張瑕佹眰紼嬪簭鍛樹簡瑙e叾瀹炵幇鐨勭粏鑺傝岄伩鍏嶅啓鍑哄洜璋冪敤宸叉湁library涓嶆寮曡搗鐨刾erformance鎱㈢殑,鑰楄垂緋葷粺璧勬簮澶氱殑紼嬪簭.閫氬父鎴愪負涓涓紭縐鐨凧AVA紼嬪簭鍛橀渶瑕佽緝闀挎椂闂寸殑緇忛獙縐瘡,鍖呮嫭浠庣▼搴忕殑tuning涓?鎴栦粠鍏朵粬鏈夌粡楠岀殑紼嬪簭鍛樺彛涓?鎵嶇煡閬撲竴瀹氬姛鑳介渶瑕佹庢牱瀹炵幇,鍦ㄧ▼搴忎腑闇瑕侀伩鍏嶉偅浜涢棶棰?浣嗚繖寰寰鏄瘮杈冪墖闈㈢殑,鐭ュ叾鐒惰屼笉鐭ュ叾鎵浠ョ劧.鎴戞兂澶у鏁扮▼搴忓憳閮芥湁綾諱技鐨勭粡鍘?涓句竴涓畝鍗曠殑渚嬪瓙,涓嬮潰鏈変笁縐嶅String鐨勭瘡鍔犳搷浣? 
鈶?nbsp;String tmp = "a" + "b" + "c"; 
鈶?nbsp;String tmp = null; 
         tmp+= "a"; 
         tmp+= "b"; 
         tmp+= "c"; 
鈶?nbsp;String tmp = null; 
         StringBuffer buf = new StringBuffer(); 
         buf.append("a"); 
         buf.append("b"); 
         buf.append("c"); 
         tmp = buf.toString(); 
鏈変簺JAVA紼嬪簭鍛樺湪浠繪剰鐨勭敤榪欎笁縐嶆柟娉曠殑浠諱竴縐?鏃犺瀹冧滑鐨勫尯鍒?鏈?nbsp;浜涚▼搴忓憳鐭ラ亾絎笁縐嶆柟娉曞ソ涓鐩村湪鐢ㄨ屼笉鐭ュ叾涓轟粈涔堝ソ,浠ヨ嚦浜庝綔涓?nbsp;
緇忛獙鏁欐潯鐨勪紶鎺堢粰JAVA鏂版墜.鐪熸鐨勭瓟妗堟槸浠涔堝憿?璁╂垜浠彮寮JAVA String Class鍜孲tringBuffer Class鐨勫皝瑁呴潰綰辯湅鐪嬪畠鐨勫唴閮ㄥ疄鐜?鍦↗AVA涓殑String Class鏄竴涓笉鍙彉綾?鎵鏈夊涓涓猄ting Object鐨勬敼鍙橀兘浼氬鑷翠竴涓柊鐨凷tring Object鐨勭敓鎴?閭d箞瀵箃mp+=a涓?絎﹀彿鐨勫疄鐜板憿?濡傛灉浣犳敞鎰忎竴涓婼tringBuffer鐨凧avadoc浼氬彂鐜?JDK瀵瑰畠鐨勫疄鐜版槸tmp=(new StringBuffer().append(tmp).append("a")).toSting(); 榪欐牱鎴戜滑鍙戠幇鈶¤繖縐嶆柟娉曞湪闅愭х敓鎴愪簡涓涓猄tringBuffer Object鍜屼竴涓猄tring Object 鍐嶄箻3灝辨槸鍏釜object 鐨勮祫婧愯楄垂.(榪樹笉鍖呮嫭String Class 鍜孲tringBuffer Class鍐呴儴浣跨敤鐨凜har[])鑰屾柟娉曗憿鍙敤浜嗕袱涓?涔熻鏈変簺紼嬪簭鍛樹細瀵硅繖浜涜楄垂涓嶄互涓虹劧,鐨勭‘涔熸槸,涓嶈繃鍦ㄤ竴浜涘満鏅笅瀹冧細鎴愪負perfamence鐨勭摱棰?鍐嶅洖澶寸湅鐪嬧憼榪欑鏂規(guī)硶,瀹冧細琚獼AVA緙栬瘧鍣ㄧ紪璇戜負tmp=(new StringBuffer().append("a").append("b").append("c")).to String();鎴戜滑鍙戠幇鍋氱殑鍜屸憿鏂規(guī)硶鏄悓鏍風殑浜?

緲版灄 2008-01-09 08:19 鍙戣〃璇勮
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Class.forName鐨勫惈涔?/title><link>http://www.aygfsteel.com/jbrg2008/archive/2008/01/08/173505.html</link><dc:creator>緲版灄</dc:creator><author>緲版灄</author><pubDate>Tue, 08 Jan 2008 00:25:00 GMT</pubDate><guid>http://www.aygfsteel.com/jbrg2008/archive/2008/01/08/173505.html</guid><wfw:comment>http://www.aygfsteel.com/jbrg2008/comments/173505.html</wfw:comment><comments>http://www.aygfsteel.com/jbrg2008/archive/2008/01/08/173505.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/jbrg2008/comments/commentRss/173505.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/jbrg2008/services/trackbacks/173505.html</trackback:ping><description><![CDATA[       <font color="red">Class.forName(xxx.xx.xx) 榪斿洖鐨勬槸涓涓被, .newInstance() 鍚庢墠鍒涘緩涓涓璞?Class.forName(xxx.xx.xx);鐨勪綔鐢ㄦ槸瑕佹眰JVM鏌ユ壘騫跺姞杞芥寚瀹氱殑綾伙紝涔熷氨鏄JVM浼氭墽琛岃綾葷殑闈欐佷唬鐮佹<img src="/CuteSoft_Client/CuteEditor/images/emmessag.gif" align="absMiddle" border="0" alt="" /></font><br /> <p>Class aClass = Class.forName(xxx.xx.xx);<br /> Object anInstance = aClass.newInstance();<br /> 榪欏叾涓瑿lass.forName("").newInstance()榪斿洖鐨勬槸object<br /> <br /> 渚嬶細<br /> Class Driver{<br /> protected static Driver current;<br /> public static Driver getDriver(){<br /> return current;<br /> }<br /> }<br /> <br /> Class MyDriver extends Driver{<br /> static{<br /> Driver.current=new MyDriver();<br /> }<br /> MyDriver(){}<br /> }<br /> <br /> 鐢ㄦ椂:<br /> Class.forName("MyDriver");<br /> Driver d=Driver.getDriver();<br /> <br /> 鏈夌殑jdbc榪炴帴鏁版嵁搴撶殑鍐欐硶閲屾槸Class.forName(xxx.xx.xx);鑰屾湁涓浜涳細Class.forName(xxx.xx.xx).newInstance()錛屼負浠涔堜細鏈夎繖涓ょ鍐欐硶鍛紵<br /> <br /> 鍦↗DBC瑙勮寖涓槑紜姹傝繖涓狣river綾誨繀欏誨悜DriverManager娉ㄥ唽鑷繁錛屽嵆浠諱綍涓涓狫DBC Driver鐨凞river綾葷殑浠g爜閮藉繀欏葷被浼煎涓嬶細<br /> public class MyJDBCDriver implements Driver {<br /> static {<br /> DriverManager.registerDriver(new MyJDBCDriver());<br /> }<br /> }<br /> <br /> 鎵浠ユ垜浠湪浣跨敤JDBC鏃跺彧闇瑕丆lass.forName(XXX.XXX);灝卞彲浠ヤ簡錛屽湪JDBC椹卞姩涓紝鏈変竴鍧楅潤鎬佷唬鐮侊紝涔熷彨闈欐佸垵濮嬪寲鍧楋紝瀹冩墽琛岀殑鏃墮棿鏄綋class璋冨叆鍒板唴瀛樹腑灝辨墽琛岋紙浣犲彲浠ユ兂鍍忔垚錛屽綋綾昏皟鐢ㄥ埌鍐呭瓨鍚庡氨鎵ц涓涓柟娉曪級銆傛墍浠ュ緢澶氫漢鎶妀dbc driver璋冨叆鍒板唴瀛樹腑錛屽啀瀹炰緥鍖栧璞℃槸娌℃湁鎰忎箟鐨勩?/p> <img src ="http://www.aygfsteel.com/jbrg2008/aggbug/173505.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/jbrg2008/" target="_blank">緲版灄</a> 2008-01-08 08:25 <a href="http://www.aygfsteel.com/jbrg2008/archive/2008/01/08/173505.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item></channel></rss> <footer> <div class="friendship-link"> <a href="http://www.aygfsteel.com/" title="狠狠久久亚洲欧美专区_中文字幕亚洲综合久久202_国产精品亚洲第五区在线_日本免费网站视频">狠狠久久亚洲欧美专区_中文字幕亚洲综合久久202_国产精品亚洲第五区在线_日本免费网站视频</a> </div> </footer> 主站蜘蛛池模板: <a href="http://" target="_blank">尚志市</a>| <a href="http://" target="_blank">青州市</a>| <a href="http://" target="_blank">安义县</a>| <a href="http://" target="_blank">苍溪县</a>| <a href="http://" target="_blank">封丘县</a>| <a href="http://" target="_blank">肃南</a>| <a href="http://" target="_blank">兴安县</a>| <a href="http://" target="_blank">饶平县</a>| <a href="http://" target="_blank">高平市</a>| <a href="http://" target="_blank">吉首市</a>| <a href="http://" target="_blank">砚山县</a>| <a href="http://" target="_blank">额济纳旗</a>| <a href="http://" target="_blank">漯河市</a>| <a href="http://" target="_blank">丘北县</a>| <a href="http://" target="_blank">潞城市</a>| <a href="http://" target="_blank">庐江县</a>| <a href="http://" target="_blank">莱州市</a>| <a href="http://" target="_blank">鲁山县</a>| <a href="http://" target="_blank">诸城市</a>| <a href="http://" target="_blank">新邵县</a>| <a href="http://" target="_blank">郸城县</a>| <a href="http://" target="_blank">兴化市</a>| <a href="http://" target="_blank">泊头市</a>| <a href="http://" target="_blank">竹北市</a>| <a href="http://" target="_blank">盐津县</a>| <a href="http://" target="_blank">尉氏县</a>| <a href="http://" target="_blank">霍邱县</a>| <a href="http://" target="_blank">根河市</a>| <a href="http://" target="_blank">崇信县</a>| <a href="http://" target="_blank">南江县</a>| <a href="http://" target="_blank">平邑县</a>| <a href="http://" target="_blank">离岛区</a>| <a href="http://" target="_blank">色达县</a>| <a href="http://" target="_blank">沈丘县</a>| <a href="http://" target="_blank">瓦房店市</a>| <a href="http://" target="_blank">高要市</a>| <a href="http://" target="_blank">黄陵县</a>| <a href="http://" target="_blank">长春市</a>| <a href="http://" target="_blank">卫辉市</a>| <a href="http://" target="_blank">田林县</a>| <a href="http://" target="_blank">康定县</a>| <script> (function(){ var bp = document.createElement('script'); var curProtocol = window.location.protocol.split(':')[0]; if (curProtocol === 'https') { bp.src = 'https://zz.bdstatic.com/linksubmit/push.js'; } else { bp.src = 'http://push.zhanzhang.baidu.com/push.js'; } var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(bp, s); })(); </script> </body>