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>&#39321;&#34121;&#25104;&#20154;&#21866;&#22269;&#20135;&#31934;&#21697;&#35270;&#39057;&#32508;&#21512;&#32593;&#44;&#25104;&#20154;&#21320;&#22812;&#35270;&#39057;&#22312;&#32447;&#44;&#20037;&#33609;&#22312;&#29616;&#22312;&#32447;</title><link>http://www.aygfsteel.com/greenteazsh/category/26077.html</link><description>璁╂垜浠惡鎵嬩竴璧峰姫鍔?.....</description><language>zh-cn</language><lastBuildDate>Fri, 21 Dec 2007 10:35:26 GMT</lastBuildDate><pubDate>Fri, 21 Dec 2007 10:35:26 GMT</pubDate><ttl>60</ttl><item><title>JAVA鍩虹絎旇瘯銆侀潰璇曞父瑙侀棶棰橀泦鍚?1)</title><link>http://www.aygfsteel.com/greenteazsh/archive/2007/12/20/169123.html</link><dc:creator>緇胯尪</dc:creator><author>緇胯尪</author><pubDate>Thu, 20 Dec 2007 10:33:00 GMT</pubDate><guid>http://www.aygfsteel.com/greenteazsh/archive/2007/12/20/169123.html</guid><wfw:comment>http://www.aygfsteel.com/greenteazsh/comments/169123.html</wfw:comment><comments>http://www.aygfsteel.com/greenteazsh/archive/2007/12/20/169123.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/greenteazsh/comments/commentRss/169123.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/greenteazsh/services/trackbacks/169123.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 銆?a class="bluekey"  target="_blank">IT</a>涓撳緗戠嫭瀹躲�戣繖鏄�氳繃瀵逛竴浜?a class="bluekey"  target="_blank">JAVA</a>絎旇瘯銆侀潰璇曠殑浜哄憳甯稿父閬囪鐨勯棶棰樼殑涓�涓簿鍗庣殑姹囨�伙紝鍏朵腑鍖呮嫭涓�浜涘叕鍙哥殑鐩稿叧鐨勯潰璇曢錛屾槸涓�浠藉緢鏈変環(huán)鍊肩殑鍙傝�冭祫鏂欙紝鏉ヤ笌澶у涓�璧鋒潵鍒嗕韓錛屽笇鏈涘彲浠ュ浣犳湁鎵�甯姪銆?
<p>銆�<strong>銆�1.鎶借薄錛?/strong></p>
<p>銆�銆�鎶借薄灝辨槸蹇界暐涓�涓富棰樹腑涓庡綋鍓嶇洰鏍囨棤鍏崇殑閭ｄ簺鏂歸潰錛屼互渚挎洿鍏呭垎鍦版敞鎰忎笌褰撳墠鐩爣鏈夊叧鐨勬柟闈€�傛娊璞″茍涓嶆墦綆椾簡(jiǎn)瑙ｅ叏閮ㄩ棶棰橈紝鑰屽彧鏄�夋嫨鍏朵腑鐨勪竴閮ㄥ垎錛屾殏鏃朵笉鐢ㄩ儴鍒嗙粏鑺傘�傛娊璞″寘鎷袱涓柟闈紝涓�鏄繃紼嬫娊璞★紝浜屾槸鏁版嵁鎶借薄銆?/p>
<p>銆�<strong>銆�2.緇ф壙錛?/strong></p>
<p>銆�銆�緇ф壙鏄竴縐嶈仈緇撶被鐨勫眰嬈℃ā鍨嬶紝騫朵笖鍏佽鍜岄紦鍔辯被鐨勯噸鐢紝瀹冩彁渚涗簡(jiǎn)涓�縐嶆槑紜〃榪板叡鎬х殑鏂規(guī)硶銆傚璞＄殑涓�涓柊綾誨彲浠ヤ粠鐜版湁鐨勭被涓淳鐢燂紝榪欎釜榪囩▼縐頒負(fù)綾葷戶鎵褲�傛柊綾葷戶鎵夸簡(jiǎn)鍘熷綾葷殑鐗規(guī)�э紝鏂扮被縐頒負(fù)鍘熷綾葷殑媧劇敓綾?瀛愮被)錛岃�屽師濮嬬被縐頒負(fù)鏂扮被鐨勫熀綾?鐖剁被)銆傛淳鐢熺被鍙互浠庡畠鐨勫熀綾婚偅閲岀戶鎵挎柟娉曞拰瀹炰緥鍙橀噺錛屽茍涓旂被鍙互淇敼鎴栧鍔犳柊鐨勬柟娉曚嬌涔嬫洿閫傚悎鐗規(guī)畩鐨勯渶瑕併�?/p>
<p>銆�銆�<strong>3.灝佽錛?/strong></p>
<p>銆�銆�灝佽鏄妸榪囩▼鍜屾暟鎹寘鍥磋搗鏉ワ紝瀵規(guī)暟鎹殑璁塊棶鍙兘閫氳繃宸插畾涔夌殑鐣岄潰銆傞潰鍚戝璞¤綆楀浜庤繖涓熀鏈蹇碉紝鍗崇幇瀹炰笘鐣屽彲浠ヨ鎻忕粯鎴愪竴緋誨垪瀹屽叏鑷不銆佸皝瑁呯殑瀵硅薄錛岃繖浜涘璞￠�氳繃涓�涓彈淇濇姢鐨勬帴鍙ｈ闂叾浠栧璞°�?/p>
<p>銆�銆�<strong>4. 澶氭�佹�э細(xì)</strong></p>
<p>銆�銆�澶氭�佹�ф槸鎸囧厑璁鎬笉鍚岀被鐨勫璞″鍚屼竴娑堟伅浣滃嚭鍝嶅簲銆傚鎬佹�у寘鎷弬鏁板寲澶氭�佹�у拰鍖呭惈澶氭�佹�с�傚鎬佹�ц璦�鍏鋒湁鐏墊椿銆佹娊璞°�佽涓哄叡浜�佷唬鐮佸叡浜殑浼樺娍錛屽緢濂界殑瑙ｅ喅浜?jiǎn)搴旂敤绋嬪簭鍑芥暟鍚屽悕闂銆?/p>
<p>銆�銆�2銆?a class="bluekey"  target="_blank">String</a>鏄渶鍩烘湰鐨勬暟鎹被鍨嬪悧?</p>
<p>銆�銆�鍩烘湰鏁版嵁綾誨瀷鍖呮嫭byte銆?a class="bluekey"  target="_blank">int</a>銆乧har銆乴ong銆乫loat銆乨ouble銆?a class="bluekey"  target="_blank">boolean</a>鍜宻hort銆?/p>
<p>銆�銆�java.lang.String綾繪槸final綾誨瀷鐨勶紝鍥犳涓嶅彲浠ョ戶鎵胯繖涓被銆佷笉鑳戒慨鏀硅繖涓被銆備負(fù)浜?jiǎn)鎻愰珮鏁堢巼鑺傜渷绌洪椷_(dá)紝鎴戜滑搴旇鐢⊿tringBuffer綾?/p>
<p>銆�銆�3銆乮nt 鍜?<a class="bluekey"  target="_blank">Integer</a> 鏈変粈涔堝尯鍒?/p>
<p>銆�銆�Java 鎻愪緵涓ょ涓嶅悓鐨勭被鍨嬶細(xì)寮曠敤綾誨瀷鍜屽師濮嬬被鍨?鎴栧唴緗被鍨?銆侷nt鏄痡ava鐨勫師濮嬫暟鎹被鍨嬶紝Integer鏄痡ava涓篿nt鎻愪緵鐨勫皝瑁呯被銆侸ava涓烘瘡涓師濮嬬被鍨嬫彁渚涗簡(jiǎn)灝佽綾匯�?/p>
<p>銆�銆�鍘熷綾誨瀷灝佽綾?/p>
<p>銆�銆�boolean Boolean</p>
<p>銆�銆�char <a class="bluekey"  target="_blank">Character</a></p>
<p>銆�銆�byte Byte</p>
<p>銆�銆�short Short</p>
<p>銆�銆�int Integer</p>
<p>銆�銆�long Long</p>
<p>銆�銆�float Float</p>
<p>銆�銆�double Double<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 寮曠敤綾誨瀷鍜屽師濮嬬被鍨嬬殑琛屼負(fù)瀹屽叏涓嶅悓錛屽茍涓斿畠浠叿鏈変笉鍚岀殑璇箟銆傚紩鐢ㄧ被鍨嬪拰鍘熷綾誨瀷鍏鋒湁涓嶅悓鐨勭壒寰佸拰鐢ㄦ硶錛屽畠浠寘鎷細(xì)澶у皬鍜岄�熷害闂錛岃繖縐嶇被鍨嬩互鍝綾誨瀷鐨勬暟鎹粨鏋勫瓨鍌紝褰撳紩鐢ㄧ被鍨嬪拰鍘熷綾誨瀷鐢ㄤ綔鏌愪釜綾葷殑瀹炰緥鏁版嵁鏃舵墍鎸囧畾鐨勭己鐪佸�箋�傚璞″紩鐢ㄥ疄渚嬪彉閲忕殑緙虹渷鍊間負(fù) null錛岃�屽師濮嬬被鍨嬪疄渚嬪彉閲忕殑緙虹渷鍊間笌瀹冧滑鐨勭被鍨嬫湁鍏熾�?</p>
<p>銆�<strong>銆�4銆丼tring 鍜孲tringBuffer鐨勫尯鍒?/strong></p>
<p>銆�銆�JAVA騫沖彴鎻愪緵浜?jiǎn)涓や釜绫诲Q歋tring鍜孲tringBuffer錛屽畠浠彲浠ュ偍瀛樺拰鎿嶄綔瀛楃涓詫紝鍗沖寘鍚涓瓧絎︾殑瀛楃鏁版嵁銆傝繖涓猄tring綾繪彁渚涗簡(jiǎn)鏁板�間笉鍙敼鍙樼殑瀛楃涓層�傝�岃繖涓猄tringBuffer綾繪彁渚涚殑瀛楃涓茶繘琛屼慨鏀廣�傚綋浣犵煡閬撳瓧絎︽暟鎹鏀瑰彉鐨勬椂鍊欎綘灝卞彲浠ヤ嬌鐢⊿tringBuffer銆傚吀鍨嬪湴錛屼綘鍙互浣跨敤StringBuffers鏉ュ姩鎬佹瀯閫犲瓧絎︽暟鎹�?/p>
<p>銆�<strong>銆�5銆佽繍琛屾椂寮傚父涓庝竴鑸紓甯告湁浣曞紓鍚?</strong></p>
<p>銆�銆�寮傚父琛ㄧず紼嬪簭榪愯榪囩▼涓彲鑳藉嚭鐜扮殑闈炴甯哥姸鎬侊紝榪愯鏃跺紓甯歌〃紺鴻櫄鎷熸満鐨勯�氬父鎿嶄綔涓彲鑳介亣鍒扮殑寮傚父錛屾槸涓�縐嶅父瑙佽繍琛岄敊璇�俲ava緙栬瘧鍣ㄨ姹傛柟娉曞繀欏誨０鏄庢姏鍑哄彲鑳藉彂鐢熺殑闈炶繍琛屾椂寮傚父錛屼絾鏄茍涓嶈姹傚繀欏誨０鏄庢姏鍑烘湭琚崟鑾風(fēng)殑榪愯鏃跺紓甯搞�?/p>
<p>銆�<strong>銆�6銆佽鍑?a class="bluekey"  target="_blank">Servlet</a>鐨勭敓鍛藉懆鏈燂紝騫惰鍑篠ervlet鍜?a class="bluekey"  target="_blank">CGI</a>鐨勫尯鍒�?/strong></p>
<p>銆�銆�Servlet琚湇鍔″櫒瀹炰緥鍖栧悗錛屽鍣ㄨ繍琛屽叾init鏂規(guī)硶錛岃姹傚埌杈炬椂榪愯鍏秙ervice鏂規(guī)硶錛宻ervice鏂規(guī)硶鑷姩媧鵑仯榪愯涓庤姹傚搴旂殑doXXX鏂規(guī)硶(doGet錛宒oPost)絳夛紝褰撴湇鍔″櫒鍐沖畾灝嗗疄渚嬮攢姣佺殑鏃跺�欒皟鐢ㄥ叾destroy鏂規(guī)硶銆?/p>
<p>銆�銆�涓巆gi鐨勫尯鍒湪浜巗ervlet澶勪簬鏈嶅姟鍣ㄨ繘紼嬩腑錛屽畠閫氳繃澶?a class="bluekey"  target="_blank">綰跨▼</a>鏂瑰紡榪愯鍏秙ervice鏂規(guī)硶錛屼竴涓疄渚嬪彲浠ユ湇鍔′簬澶氫釜璇鋒眰錛屽茍涓斿叾瀹炰緥涓�鑸笉浼?xì)閿�姣侊紝鑰孋GI瀵規(guī)瘡涓姹傞兘浜х敓鏂扮殑榪涚▼錛屾湇鍔″畬鎴愬悗灝遍攢姣侊紝鎵�浠ユ晥鐜囦笂浣庝簬servlet銆?/p>
<p>銆�銆�<strong>7銆佽鍑篈rrayList,Vector, LinkedList鐨勫瓨鍌ㄦ�ц兘鍜岀壒鎬?/strong></p>
<p>銆�銆�ArrayList鍜孷ector閮芥槸浣跨敤鏁扮粍鏂瑰紡瀛樺偍鏁版嵁錛屾鏁扮粍鍏冪礌鏁板ぇ浜庡疄闄呭瓨鍌ㄧ殑鏁版嵁浠ヤ究澧炲姞鍜屾彃鍏ュ厓绱狅紝瀹冧滑閮藉厑璁哥洿鎺ユ寜搴忓彿绱㈠紩鍏冪礌錛屼絾鏄彃鍏ュ厓绱犺娑夊強(qiáng)鏁扮粍鍏冪礌縐誨姩絳夊唴瀛樻搷浣滐紝鎵�浠ョ儲(chǔ)寮曟暟鎹揩鑰屾彃鍏ユ暟鎹參錛孷ector鐢變簬浣跨敤浜?jiǎn)synchronized鏂規(guī)硶(綰跨▼瀹夊叏)錛岄�氬父鎬ц兘涓婅緝ArrayList宸紝鑰孡inkedList浣跨敤鍙屽悜閾捐〃瀹炵幇瀛樺偍錛屾寜搴忓彿绱㈠紩鏁版嵁闇�瑕佽繘琛屽墠鍚戞垨鍚庡悜閬嶅巻錛屼絾鏄彃鍏ユ暟鎹椂鍙渶瑕佽褰曟湰欏圭殑鍓嶅悗欏瑰嵆鍙紝鎵�浠ユ彃鍏ラ�熷害杈冨揩銆?/p>
<p>銆�銆�<strong>8銆丒JB鏄熀浜庡摢浜涙妧鏈疄鐜扮殑?騫惰鍑篠essionBean鍜孍ntityBean鐨勫尯鍒紝StatefulBean鍜孲tatelessBean鐨勫尯鍒�?/strong></p>
<p>銆�銆�EJB鍖呮嫭Session Bean銆丒ntity Bean銆丮essage Driven Bean錛屽熀浜嶫NDI銆丷MI銆丣AT絳夋妧鏈疄鐜般�?/p>
<p>銆�銆�SessionBean鍦↗2EE搴旂敤紼嬪簭涓鐢ㄦ潵瀹屾垚涓�浜涙湇鍔″櫒绔殑涓氬姟鎿嶄綔錛屼緥濡傝闂暟鎹簱銆佽皟鐢ㄥ叾浠朎JB緇勪歡銆侲ntityBean琚敤鏉ヤ唬琛ㄥ簲鐢ㄧ郴緇熶腑鐢ㄥ埌鐨勬暟鎹�?/p>
<p>銆�銆�瀵逛簬瀹㈡埛鏈猴紝SessionBean鏄竴縐嶉潪鎸佷箙鎬у璞★紝瀹冨疄鐜版煇浜涘湪鏈嶅姟鍣ㄤ笂榪愯鐨勪笟鍔￠�昏緫銆?/p>
<p>銆�銆�瀵逛簬瀹㈡埛鏈猴紝EntityBean鏄竴縐嶆寔涔呮�у璞★紝瀹冧唬琛ㄤ竴涓瓨鍌ㄥ湪鎸佷箙鎬у瓨鍌ㄥ櫒涓殑瀹炰綋鐨勫璞¤鍥撅紝鎴栨槸涓�涓敱鐜版湁浼佷笟搴旂敤紼嬪簭瀹炵幇鐨勫疄浣撱�?/p>
<p>銆�銆�Session Bean 榪樺彲浠ュ啀緇嗗垎涓?Stateful Session Bean 涓?Stateless Session Bean 錛岃繖涓ょ鐨?Session Bean閮藉彲浠ュ皢緋葷粺閫昏緫鏀懼湪 method涔嬩腑鎵ц錛屼笉鍚岀殑鏄?Stateful Session Bean 鍙互璁板綍鍛煎彨鑰呯殑鐘舵�侊紝鍥犳閫氬父鏉ヨ錛屼竴涓嬌鐢ㄨ�呬細(xì)鏈変竴涓浉瀵瑰簲鐨?Stateful Session Bean 鐨勫疄浣撱�係tateless Session Bean 铏界劧涔熸槸閫昏緫緇勪歡錛屼絾鏄粬鍗翠笉璐熻矗璁板綍浣跨敤鑰呯姸鎬侊紝涔熷氨鏄褰撲嬌鐢ㄨ�呭懠鍙?Stateless Session Bean 鐨勬椂鍊欙紝EJB Container 騫朵笉浼?xì)鎵惧潐瑰畾鐨?Stateless Session Bean 鐨勫疄浣撴潵鎵ц榪欎釜 method銆傛崲璦�涔嬶紝寰堝彲鑳芥暟涓嬌鐢ㄨ�呭湪鎵ц鏌愪釜 Stateless Session Bean 鐨?methods 鏃訛紝浼?xì)鏄悓涓�涓?Bean 鐨?Instance 鍦ㄦ墽琛屻�備粠鍐呭瓨鏂歸潰鏉ョ湅錛?Stateful Session Bean 涓?Stateless Session Bean 姣旇緝錛?Stateful Session Bean 浼?xì)娑堣�?J2EE Server 杈冨鐨勫唴瀛橈紝鐒惰�?Stateful Session Bean 鐨勪紭鍔垮嵈鍦ㄤ簬浠栧彲浠ョ淮鎸佷嬌鐢ㄨ�呯殑鐘舵�併�?/p>
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<p>銆�銆�Collections鏄拡瀵歸泦鍚堢被鐨勪竴涓府鍔╃被錛屼粬鎻愪緵涓�緋誨垪闈?rùn)鎬佹柟娉曞疄鐜板鍚勭闆嗗悎鐨勬悳绱€�佹帓搴忋�佺嚎紼嬪畨鍏ㄥ寲絳夋搷浣溿�?/p>
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<p>銆�銆�&amp;鏄綅榪愮畻絎︼紝琛ㄧず鎸変綅涓庤繍綆楋紝&amp;&amp;鏄�昏緫榪愮畻絎︼紝琛ㄧず閫昏緫涓?and)銆?/p>
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