锘??xml version="1.0" encoding="utf-8" standalone="yes"?>亚洲av中文无码乱人伦在线r▽,国产亚洲精品拍拍拍拍拍,亚洲天堂免费在线http://www.tkk7.com/zj474097500/category/49084.html Java鐨勯瓍鍔涳細(xì)璺ㄥ鉤鍙般佸姩鎬佺殑Web銆両nternet璁$畻 Java鍦╓eb銆佺Щ鍔ㄨ澶囦互鍙?qiáng)浜戣绠楁枤w潰鍓嶆櫙騫塊様 鎴戠殑java緙栫▼涓嶆槸姊︼紒錛侊紒zh-cnSun, 17 Jul 2011 23:04:04 GMTSun, 17 Jul 2011 23:04:04 GMT60java 鏁版嵁綾誨瀷http://www.tkk7.com/zj474097500/archive/2011/07/17/354497.html銈繪櫤鍐涖儫銈繪櫤鍐涖儫Sun, 17 Jul 2011 15:16:00 GMThttp://www.tkk7.com/zj474097500/archive/2011/07/17/354497.htmlhttp://www.tkk7.com/zj474097500/comments/354497.htmlhttp://www.tkk7.com/zj474097500/archive/2011/07/17/354497.html#Feedback0http://www.tkk7.com/zj474097500/comments/commentRss/354497.htmlhttp://www.tkk7.com/zj474097500/services/trackbacks/354497.htmljava鏁版嵁綾誨瀷錛?/span>鏄竴縐嶅己綾誨瀷璇█錛岀涓嬈$敵鏄庡彉閲忓繀欏昏鏄庢暟鎹被鍨嬶紝絎竴嬈″彉閲忚祴鍊肩О涓哄彉閲忕殑鍒濆鍖栥?br />


縐嶇被錛?縐嶅熀鏈被鍨嬶紙鍘熺敓綾誨瀷錛夛細(xì)鏁村瀷錛歜yte 瀛楄妭鍨?nbsp;   1Byte=8bit          256涓姸鎬?nbsp;     -128~+127
                                                   short 鐭暣鍨?nbsp;   2Byte=16bit       64436           -32768~32767
                                                   int 鏁村瀷        4Btye=32bit        2^32    -2147483648~+2147483647
                                                                                              2^31=2^10*2^10*2^10*2
                                                                         澶х害鍦ㄦ璐?1浜夸箣闂寸殑鏁?nbsp;      k       k       k   2 =2G
                                                   long 闀挎暣鍨?nbsp;    8Byte=64bit        -2^63~2^63-1
                                                   char  瀛楃鍨?nbsp;   2Byte=16bit                        0~65535
                                                                                                1+2+'a'+1+2絳変環(huán)浜?+2+97+1+2
                                           
                                        嫻偣鍨?瀹炲瀷錛歠loat  鍗曠簿搴?nbsp;    4Byte=32bit     瀹為檯鏄?+1錛?涓綅鏉冿級(jí)f1=5.0F鎴杅
                                                       double  鍙岀簿搴?nbsp;    8Byte=64bit      瀹為檯鏄?+2錛?涓綅鏉冿級(jí)
                                         甯冨皵綾誨瀷錛?nbsp; boolean
                      
  娉ㄦ剰錛氭誕鐐瑰瀷鏁版嵁鏃墮潪綺懼害瀛樺偍錛屾暣鍨嬫暟鎹負(fù)綺劇‘瀛樺偍銆傝屾暟鎹被鍨嬬殑瀛楅潰鍊兼湁榛樿鍊鹼細(xì)鏁村瀷涓篿nt錛屽疄鍨嬶細(xì)涓篸ouble
                        double鍜孊igDecimal鐨勫尯鍒細(xì)double錛岄傚悎鍋氱瀛﹁繍綆?br />                                                               BigDecimal錛岄傚悎鐢ㄥ晢涓氳繍綆?br />                                    BigDecimal   b1 = new BigDecimal錛?5.0"錛夛紱
                                    BigDecimal b2 = new BigDecimal錛?3.1"錛夛紱
                                    b1.subtract(b2); 鍑?nbsp;
                                    b1.divide錛坆2,4錛? 闄?br />
                        BigInteger 鏄敤浜庡ぇ鏁版嵁鐨勩傘傛瘮濡傛眰9鐨?9姝ゆ柟

    5縐嶅紩鐢ㄧ被鍨嬶紙瀵硅薄綾誨瀷錛夛細(xì)綾?nbsp;  鎺ュ彛  鏁扮粍  鏋氫婦  鏍囨敞
     絀虹被鍨嬶細(xì)void綾誨瀷


    
鏁版嵁綾誨瀷鐨勮漿鎹細(xì)鍙湁boolean涓嶅弬涓庢暟鎹被鍨嬬殑杞崲
            
 錛?錛?鑷姩綾誨瀷鐨勮漿鎹細(xì)a.甯告暟鍦ㄨ〃鏁拌寖鍥村唴鏄兘澶熻嚜鍔ㄧ被鍨嬭漿鎹㈢殑
                                           b.鏁版嵁鑼冨洿灝忕殑鑳藉鑷姩鏁版嵁綾誨瀷澶х殑杞崲錛堟敞鎰忕壒渚嬶級(jí)
                                               int鍒癴loat錛宭ong鍒癴loat錛宭ong鍒癲ouble 鏄笉浼?xì)鑷姩铦{鎹㈢殑錛屼笉鐒跺皢浼?xì)涓㈠まq簿搴?br />                                           c.寮曠敤綾誨瀷鑳藉鑷姩杞崲涓虹埗綾葷殑
                                           d.鍩烘湰綾誨瀷鍜屽畠浠寘瑁呯被鍨嬫槸鑳藉浜掔浉杞崲鐨?br />              錛?錛?寮哄埗綾誨瀷杞崲錛氱敤鍦嗘嫭鍙鋒嫭璧鋒潵鐩爣綾誨瀷錛岀疆浜庡彉閲忓墠


8涓熀鏈被鍨嬬殑鍖呰綾伙細(xì)Byte  Short  Integer  Long  Character  Float  Double  Boolean
            鍩烘湰綾誨瀷鐨勪紭鍔匡細(xì)鏁版嵁瀛樺偍鐩稿綆鍗曪紝榪愮畻鏁堢巼姣旇緝楂?br />            鍖呰綾葷殑浼樺娍錛氭湁鐨勫鏄擄紝姣斿闆嗗悎鐨勫厓绱犲繀欏繪槸瀵硅薄綾誨瀷錛屾弧瓚充簡(jiǎn)java涓鍒囩殕鏄璞$殑鎬濇兂


寮曠敤綾誨瀷錛氬簳灞傜粨鏋勫拰鍩烘湰綾誨瀷宸埆杈冨ぇ
        棣栧厛浠嬬粛涓婮VM鐨勫唴瀛樼┖闂達(dá)細(xì)錛?錛? Heap 鍫嗙┖闂達(dá)細(xì)鍒嗛厤瀵硅薄    new Student錛堬級(jí)
                                            錛?錛? Stack 鏍堢┖闂達(dá)細(xì)涓存椂鍙橀噺    Student stu
                                            錛?錛?Code 浠g爜鍖?錛氱被鐨勫畾涔夛紝闈?rùn)鎬佽祫婧?Student.class

 
eg錛歋tudent stu = new Student錛堬級(jí)錛?br />         stu.study();
    //new 鍦ㄥ唴瀛樼殑鍫嗙┖闂村垱寤哄璞?br />    //鎶婂璞$殑鍦板潃璧嬬粰stu寮曠敤鍙橀噺

涓婁緥瀹炵幇姝ラ錛歛.JVM鍔犺澆Student.class 鍒癈ode鍖?br />                   b.new Student()鍦ㄥ爢絀洪棿鍒嗛厤絀洪棿騫跺垱寤轟竴涓猄tudent瀹炰緥
                   c.灝嗘瀹炰緥鐨勫湴鍧璧嬪肩粰寮曠敤stu錛?鏍堢┖闂?br />

浠ヤ笂灝辨垜鍦ㄦ暟鎹被鍨嬩腑鎵璁や負(fù)姣旇緝閲嶈鐨勫唴瀹癸紝甯屾湜鑳界粰涓浜涗漢甯︽潵甯姪錛岃嫢鏈変漢榪樻湁鏇村閲嶈鐨勭煡璇嗭紝璇鋒彁鍑猴紝澶у涓璧峰垎浜佸涔?fàn)鍝﹀Q佽阿璋?/span>


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java鍦╓indow鍜孶nix/Linux涓幆澧冨彉閲忕殑閰嶇疆http://www.tkk7.com/zj474097500/archive/2011/07/15/354356.html銈繪櫤鍐涖儫銈繪櫤鍐涖儫Thu, 14 Jul 2011 16:11:00 GMThttp://www.tkk7.com/zj474097500/archive/2011/07/15/354356.htmlhttp://www.tkk7.com/zj474097500/comments/354356.htmlhttp://www.tkk7.com/zj474097500/archive/2011/07/15/354356.html#Feedback0http://www.tkk7.com/zj474097500/comments/commentRss/354356.htmlhttp://www.tkk7.com/zj474097500/services/trackbacks/354356.html涓銆侀厤緗墠鍑犱釜璇█鍚嶈瘝鐨勪粙緇嶏細(xì)
1.JDK錛?java寮鍙戝伐鍏峰寘    瀹夎JDK       src.zip鏄痡ava綾誨簱婧愪唬鐮?br />           jdk涓媌in錛氫簩榪涘埗鏂囦歡   binary
           jdk涓媗ib錛氳繍琛岀殑搴撴枃浠?nbsp; libary
2.JRE錛?Java榪愯鐜        lib/rt.jar  鏄痡ava鐨勬牳蹇?jī)绫诲?br />3.JVM錛歫ava铏氭嫙鏈?br />4.GC錛?Java鍐呭瓨鍨冨溇鏀墮泦鏈哄埗錛屼篃鍙玪azy鎳掓儼鐨勬敹闆嗘満鍒?br />           褰揓VM鍙戠幇鍐呭瓨涓嶈凍鏄紝鎵嶅惎鍔℅C綰跨▼鍥炴敹緋葷粺鍨冨溇錛孏C綰跨▼鏄緢娑堣楃郴緇熻祫婧愮殑
5.API錛?搴旂敤緙栫▼鎺ュ彛    java鐗規(guī)寚JavaDoc   API鏂囨。
6.IDE錛?闆嗘垚寮鍙戠幆澧冿紝鍙互鐢ㄤ簬緙栬緫銆佺紪璇戙佽皟寮忋佽繍琛屻侀儴緗層佹墦鍖呫侀泦鎴愬叾浠栫粍浠訛紙鏁版嵁搴撶紪紼嬨佹湇鍔″櫒緇勪歡銆佹祻瑙堝櫒錛?br />

浜屻丣DK銆丣RE銆丣VM鐨勫叧緋伙細(xì)錛堝寘鍚叧緋伙級(jí)
1.鍙互瀹夎JDK銆傚氨浠涔堥兘鏈変簡(jiǎn)錛岃兘澶熸彁渚汮ava寮鍙戝姛鑳?br />2.鍙互鍙畨瑁匤RE錛屾鏃跺彧鑳藉榪愯Java紼嬪簭錛屼笉鑳芥彁渚涚紪璇戙佽皟寮忕瓑宸ュ叿
3.JVM涓嶈兘澶熷崟鐙畨瑁咃紝蹇呴』渚濋檮浜嶫RE瀛樺湪


涓夈乄indows涓嬬殑鐜鍙橀噺閰嶇疆錛?br />1.Java 鐨勫畨瑁呯洰褰曪紝鎻愪緵緇欑涓夋柟杞歡浣跨敤
    JAVA_HOME=C:\Program Files\Java\jdk1.6.0_10
2.Java鍛戒護(hù)鐨勬悳绱㈣礬寰勶紙浠庡墠寰鍚庝緷嬈℃壘瀵伙紝鎵懼埌涓烘錛?br />    PATH錛坧ath錛?%JAVA_HOME%\bin;%PATH%;
3.Java 綾誨緱鎼滅儲(chǔ)璺緞
    鍦↗DK5.0浠ュ墠錛歝lasspath=.;C:\Program Files\Java\jdk1.6.0_10\lib\dt.jar;C:\Program Files\Java\jdk1.6.0_10\lib\tools.jar;
    鍦↗DK5.0浠ュ悗錛歝lasspath=.
4.鏈鍚庣敤javac   鎴?nbsp;  java -version楠岃瘉


鍥涖乁nix/Linux涓嬬殑鐜鍙橀噺閰嶇疆錛?br />1.棣栧厛榪涘叆bash shell
2.鍦ㄤ富鐩綍涓嬩慨鏀?.bash_profile鏂囦歡錛岃嫢鏉冮檺涓嶅錛岃鐢╟hmod鍛戒護(hù)鏇存敼鏉冮檺
        JAVA_HOME=/opt/jdk1.6.0_10
        蹇呴』鏄ぇ鍐欙細(xì)PATH=$JAVA_HOME/bin:$PATH
        CLASSPATH=.:
        export JAVA_HOME PATH CLASSPATH
3.鏈鍚庝繚瀛橀鍑猴紝    騫剁敤source .bash_profile 璁╃幆澧冨彉閲忕敓鏁?br />                         鐢╡cho鎴杝et鍛戒護(hù)楠岃瘉鐜鍙橀噺鏄惁閰嶇疆瀹屾垚
                鐢╦avac 鎴?java -version楠岃瘉


榪欐槸鎴戝湪涓ょ涓嶅悓緋葷粺涓嬮厤緗殑java鐜鍙橀噺錛屽笇鏈涜兘緇欎竴浜涙兂瀛︿範(fàn)鐨勪漢甯︽潵甯姪錛?/font>


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java鐨勫嚑涓噸瑕佺壒鐐?/title><link>http://www.tkk7.com/zj474097500/archive/2011/07/14/354353.html</link><dc:creator>銈繪櫤鍐涖儫</dc:creator><author>銈繪櫤鍐涖儫</author><pubDate>Thu, 14 Jul 2011 15:37:00 GMT</pubDate><guid>http://www.tkk7.com/zj474097500/archive/2011/07/14/354353.html</guid><wfw:comment>http://www.tkk7.com/zj474097500/comments/354353.html</wfw:comment><comments>http://www.tkk7.com/zj474097500/archive/2011/07/14/354353.html#Feedback</comments><slash:comments>4</slash:comments><wfw:commentRss>http://www.tkk7.com/zj474097500/comments/commentRss/354353.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/zj474097500/services/trackbacks/354353.html</trackback:ping><description><![CDATA[<span style="color: #993300; font-size: 14pt">java鐨勫嚑涓壒鐐癸細(xì)</span><br />榪欐槸鎴戝java鐗圭偣鐨勪竴浜涚悊瑙e強(qiáng)鍏跺綊綰籌細(xì)<br />(1)銆乯ava 鐨勭畝鍗曟э細(xì)鍜孋++鐩告瘮錛岃娉曠畝鍗曚簡(jiǎn)錛屽彇娑堜簡(jiǎn)鎸囬拡鐨勮娉曪紱鍐呭瓨鍒嗛厤鍜屽洖鏀朵笉闇瑕佹垜浠潵榪囨浮鍏蟲敞錛孋++鍙互澶氱戶鎵匡紝浣唈ava鍙兘鏄崟緇ф壙錛岀浉瀵逛簬綾繪潵璇淬傦紙娉細(xì)鎺ュ彛鍙互澶氱戶鎵匡級(jí)<br />錛?錛夈乯ava闈㈠悜瀵硅薄錛歫ava綆楁槸綰潰鍚戝璞★紝浣唈query鏄洿綰殑闈㈠悜瀵硅薄銆?br />                              鍦╦ava緙栫▼鎬濇兂榪欐湰涔﹁榪囷紝“Everything is object!”        榪欐牱渚夸簬浜虹被鐨勬瀯鎬濆拰璁捐錛屾洿絎﹀悎浜轟滑鐨勬濊冮棶棰樻柟寮?br />錛?錛夈佸垎甯冨紡錛氫富瑕佽繕鏄敤鍦‥JB涓?br />錛?錛夈佸畨鍏ㄦэ細(xì)java鐨勮娉曢檺瀹氫簡(jiǎn)婧愮▼搴忕殑瀹夊叏鎬э紝棣栧厛緙栬瘧鍣ㄤ細(xì)榪涜婧愪唬鐮佺殑絎竴姝ユ鏌?br />錛?錛夈佽法騫沖彴錛歫ava鑳藉璺ㄨ秺涓嶅悓鐨勬搷浣滅郴緇熷鉤鍙幫紝騫沖彴鏃犲叧鎬?br />              <span style="color: #993300"> 鎬庝箞璺ㄥ鉤鍙板憿錛?nbsp;  </span><span style="color: #000000"> </span><span style="color: #993300">涓昏鏄湪涓嶅悓鐨勬搷浣滅郴緇熶腑錛孞VM瑙勮寖閮芥槸涓鏍風(fēng)殑錛岃JVM鍔犺澆鎴愬悇涓搷浣滅郴緇熸墍鏀寔鐨勶紝灞忚斀浜?jiǎn)搴曞眰鎿嶄綔绯痪l熺殑宸紓<br /></span><span style="color: #000000">錛?錛夈侀珮鎬ц兘錛氬紑闂師鍒?--瀵規(guī)墿灞曞紑鏀撅紝瀵逛慨鏀瑰叧闂?nbsp;        java鏄嵆鏃剁紪璇戠殑<br />錛?錛夈佸綰跨▼錛?br /><br /><br /></span><span style="color: #993300; font-size: 14pt">Java寮鍙戠殑嫻佺▼錛?br /></span><span style="color: #000000; font-size: 12pt">錛?錛夈侀鍏堢紪杈?.java婧愮▼搴?br />錛?錛夈佺紪璇戞垚 .class瀛楄妭鐮佹枃浠禸yte code錛堜竴縐嶄簩榪涘埗鏂囦歡錛?br />錛?錛夈佹渶鍚庤java铏氭嫙鏈猴紙JVM錛夊姞杞借В閲婂茍鎵ц<br /><br /><br /><br />铏界劧榪欎簺鏄緢鍩虹鐨勭煡璇嗭紝浣嗚繖浜涙槸鎴戝java閲嶆柊鐨勮璇嗭紝鍙兘榪樻槸鏈夊緢澶氬湴鏂逛笉鍒頒綅錛屼絾鎴戞洿鎯蟲妸搴曞眰鐨勭煡璇嗘墦鐗€?br />璇峰ぇ瀹朵竴璧鋒洿鎴戝垎浜紝鑻ユ湁濂界殑寤鴻錛岃鎻愬嚭錛佹垜鎯蟲洿榪涗竴姝ョ殑瀛︿範(fàn)錛?br /></span><img src ="http://www.tkk7.com/zj474097500/aggbug/354353.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/zj474097500/" target="_blank">銈繪櫤鍐涖儫</a> 2011-07-14 23:37 <a href="http://www.tkk7.com/zj474097500/archive/2011/07/14/354353.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item></channel></rss> <footer> <div class="friendship-link"> <p>感谢您访问我们的网站,您可能还对以下资源感兴趣:</p> <a href="http://www.tkk7.com/" title="亚洲av成人片在线观看">亚洲av成人片在线观看</a> <div class="friend-links"> </div> </div> </footer> 主站蜘蛛池模板: <a href="http://xsxdsb.com" target="_blank">亚洲精品免费在线</a>| <a href="http://ri9999.com" target="_blank">亚洲精品视频免费在线观看</a>| <a href="http://qsqse1.com" target="_blank">亚洲成A∨人片在线观看无码</a>| <a href="http://haodiaose35pao.com" target="_blank">四虎免费久久影院</a>| <a href="http://glgg99.com" target="_blank">四虎永久在线观看免费网站网址</a>| <a href="http://lai228.com" target="_blank">国产精品成人69XXX免费视频</a>| <a href="http://snsdtv.com" target="_blank">日本亚洲色大成网站www久久</a>| <a href="http://kanboy.com" target="_blank">亚洲黄色在线电影</a>| <a href="http://416164.com" target="_blank">亚洲国产精品一区二区第一页</a>| <a href="http://xxxck.com" target="_blank">亚洲Av无码国产情品久久 </a>| <a href="http://fholaer.com" target="_blank">成人毛片免费视频</a>| <a href="http://taojin5.com" target="_blank">24小时免费看片</a>| <a href="http://116603a.com" target="_blank">免费观看久久精彩视频</a>| <a href="http://gxnnzk.com" target="_blank">亚洲精品视频免费观看</a>| <a href="http://zhaofeiz.com" target="_blank">亚洲AV一区二区三区四区</a>| <a href="http://yunyitai.com" target="_blank">亚洲精品综合在线影院</a>| <a href="http://shiliuvip.com" target="_blank">亚洲熟妇av一区</a>| <a href="http://68996500.com" target="_blank">亚洲国产香蕉碰碰人人</a>| <a href="http://xzgfbxg.com" target="_blank">亚洲日韩精品A∨片无码</a>| <a href="http://adcaes.com" target="_blank">久久久青草青青国产亚洲免观 </a>| <a href="http://sdyzzs.com" target="_blank">亚洲人成77777在线播放网站不卡</a>| <a href="http://wulegu.com" target="_blank">精品亚洲麻豆1区2区3区</a>| <a href="http://jiajuco.com" target="_blank">亚洲AV日韩AV永久无码久久</a>| <a href="http://t66ycom.com" target="_blank">中文亚洲AV片不卡在线观看</a>| <a href="http://www-ttyx.com" target="_blank">国产成人亚洲精品91专区手机</a>| <a href="http://wwwbi757.com" target="_blank">免费在线观看你懂的</a>| <a href="http://wx-jn.com" target="_blank">国产又大又黑又粗免费视频 </a>| <a href="http://xiamenwave.com" target="_blank">深夜特黄a级毛片免费播放</a>| <a href="http://xxxck.com" target="_blank">亚洲日韩乱码中文字幕</a>| <a href="http://0827fang.com" target="_blank">亚洲香蕉在线观看</a>| <a href="http://57fi.com" target="_blank">亚洲一区二区影视</a>| <a href="http://avdaka.com" target="_blank">亚洲国产成人精品电影</a>| <a href="http://pc521.com" target="_blank">亚洲香蕉久久一区二区 </a>| <a href="http://1314con.com" target="_blank">大学生美女毛片免费视频</a>| <a href="http://556228.com" target="_blank">成人女人A级毛片免费软件</a>| <a href="http://laosanqq.com" target="_blank">国产成人免费在线</a>| <a href="http://zhaosifuwang.com" target="_blank">91免费国产自产地址入</a>| <a href="http://ac839.com" target="_blank">av无码国产在线看免费网站</a>| <a href="http://3bmmatv.com" target="_blank">国产无人区码卡二卡三卡免费</a>| <a href="http://ur5r2kr.com" target="_blank">av无码国产在线看免费网站 </a>| <a href="http://nyminer.com" target="_blank">亚洲欧美成人综合久久久 </a>| <script> (function(){ var bp = document.createElement('script'); 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