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(鍩虹)銆?<br />銆銆GC鏄瀮鍦炬敹闆嗗櫒銆侸ava 紼嬪簭鍛樹笉鐢ㄦ媴蹇冨唴瀛樼鐞嗭紝鍥犱負鍨冨溇鏀墮泦鍣ㄤ細鑷姩榪涜綆$悊銆傝璇鋒眰鍨冨溇鏀墮泦錛屽彲浠ヨ皟鐢ㄤ笅闈㈢殑鏂規硶涔嬩竴錛?<br />聽銆銆System.gc() <br />銆銆 Runtime.getRuntime().gc() <br />銆銆絎節錛孲tring s = new String("xyz");鍒涘緩浜嗗嚑涓猄tring Object? <br />銆銆涓や釜瀵硅薄錛屼竴涓槸鈥渪yx鈥?涓涓槸鎸囧悜鈥渪yx鈥濈殑寮曠敤瀵硅薄s銆?<br />銆銆絎崄錛孧ath.round(11.5)絳夋柤澶氬皯? Math.round(-11.5)絳夋柤澶氬皯?<br />銆銆<br />銆銆 Math.round(11.5)榪斿洖錛坙ong錛?2錛孧ath.round(-11.5)榪斿洖錛坙ong錛?11; <br />銆銆絎崄涓錛宻hort s1 = 1; s1 = s1 + 1;鏈変粈涔堥敊? short s1 = 1; s1 += 1;鏈変粈涔堥敊?</p> <p>銆銆short s1 = 1; s1 = s1 + 1;鏈夐敊錛宻1鏄痵hort鍨嬶紝s1+1鏄痠nt鍨?涓嶈兘鏄懼紡杞寲涓簊hort鍨嬨傚彲淇敼涓簊1 =(short)(s1 + 1) 銆俿hort s1 = 1; s1 += 1姝g‘銆?<br />銆銆絎崄浜岋紝sleep() 鍜?wait() 鏈変粈涔堝尯鍒? 鎼炵嚎紼嬬殑鏈鐖?<br />銆銆sleep()鏂規硶鏄嬌綰跨▼鍋滄涓孌墊椂闂寸殑鏂規硶銆傚湪sleep 鏃墮棿闂撮殧鏈熸弧鍚庯紝綰跨▼涓嶄竴瀹氱珛鍗蟲仮澶嶆墽琛屻傝繖鏄洜涓哄湪閭d釜鏃跺埢錛屽叾瀹冪嚎紼嬪彲鑳芥鍦ㄨ繍琛岃屼笖娌℃湁琚皟搴︿負鏀懼純鎵ц錛岄櫎闈?a)鈥滈啋鏉モ濈殑綰跨▼鍏鋒湁鏇撮珮鐨勪紭鍏堢駭銆?/p> <p>銆銆 (b)姝e湪榪愯鐨勭嚎紼嬪洜涓哄叾瀹冨師鍥犺岄樆濉炪?<br />銆銆 wait()鏄嚎紼嬩氦浜掓椂錛屽鏋滅嚎紼嬪涓涓悓姝ュ璞 鍙戝嚭涓涓獁ait()璋冪敤錛岃綰跨▼浼氭殏鍋滄墽琛岋紝琚皟瀵硅薄榪涘叆絳夊緟鐘舵侊紝鐩村埌琚敜閱掓垨絳夊緟鏃墮棿鍒般?<br />銆銆絎崄涓夛紝Java鏈夋病鏈塯oto? <br />銆銆Goto鈥攋ava涓殑淇濈暀瀛楋紝鐜板湪娌℃湁鍦╦ava涓嬌鐢ㄣ?<br />銆銆絎崄鍥涳紝鏁扮粍鏈夋病鏈塴ength()榪欎釜鏂規硶? String鏈夋病鏈塴ength()榪欎釜鏂規硶錛?<br />銆銆鏁扮粍娌℃湁length()榪欎釜鏂規硶錛屾湁length鐨勫睘鎬с?<br />銆銆 String鏈夋湁length()榪欎釜鏂規硶銆?<br />銆銆絎崄浜旓紝Overload鍜孫verride鐨勫尯鍒侽verloaded鐨勬柟娉曟槸鍚﹀彲浠ユ敼鍙樿繑鍥炲肩殑綾誨瀷? <br />銆銆鏂規硶鐨勯噸鍐橭verriding鍜岄噸杞絆verloading鏄疛ava澶氭佹х殑涓嶅悓琛ㄧ幇銆傞噸鍐橭verriding鏄埗綾諱笌瀛愮被涔嬮棿澶氭佹х殑涓縐嶈〃鐜幫紝閲嶈澆Overloading鏄竴涓被涓鎬佹х殑涓縐嶈〃鐜般傚鏋滃湪瀛愮被涓畾涔夋煇鏂規硶涓庡叾鐖剁被鏈夌浉鍚岀殑鍚嶇О鍜屽弬鏁幫紝鎴戜滑璇磋鏂規硶琚噸鍐?(Overriding)銆傚瓙綾葷殑瀵硅薄浣跨敤榪欎釜鏂規硶鏃訛紝灝嗚皟鐢ㄥ瓙綾諱腑鐨勫畾涔夛紝瀵瑰畠鑰岃█錛岀埗綾諱腑鐨勫畾涔夊鍚岃鈥滃睆钄解濅簡銆傚鏋滃湪涓涓被涓畾涔変簡澶氫釜鍚屽悕鐨勬柟娉曪紝瀹冧滑鎴栨湁涓嶅悓鐨勫弬鏁頒釜鏁版垨鏈変笉鍚岀殑鍙傛暟綾誨瀷錛屽垯縐頒負鏂規硶鐨勯噸杞?Overloading)銆侽verloaded鐨勬柟娉曟槸鍙互鏀瑰彉榪斿洖鍊肩殑綾誨瀷銆?<br />銆銆絎崄鍏紝Set閲岀殑鍏冪礌鏄笉鑳介噸澶嶇殑錛岄偅涔堢敤浠涔堟柟娉曟潵鍖哄垎閲嶅涓庡惁鍛? 鏄敤==榪樻槸equals()? 瀹冧滑鏈変綍鍖哄埆? <br />銆銆Set閲岀殑鍏冪礌鏄笉鑳介噸澶嶇殑錛岄偅涔堢敤iterator()鏂規硶鏉ュ尯鍒嗛噸澶嶄笌鍚︺俥quals()鏄垽璇諱袱涓猄et鏄惁鐩哥瓑銆?<br />銆銆 equals()鍜?=鏂規硶鍐沖畾寮曠敤鍊兼槸鍚︽寚鍚戝悓涓瀵硅薄equals()鍦ㄧ被涓瑕嗙洊錛屼負鐨勬槸褰撲袱涓垎紱葷殑瀵硅薄鐨勫唴瀹瑰拰綾誨瀷鐩擱厤鐨勮瘽錛岃繑鍥炵湡鍊箋?<br />銆銆絎崄涓冿紝緇欐垜涓涓綘鏈甯歌鍒扮殑runtime exception銆?<br />銆銆ArithmeticException, ArrayStoreException, BufferOverflowException, BufferUnderflowException, CannotRedoException, CannotUndoException, ClassCastException, CMMException, ConcurrentModificationException, DOMException, EmptyStackException, IllegalArgumentException, IllegalMonitorStateException, IllegalPathStateException, IllegalStateException, <br />銆銆 ImagingOpException, MissingResourceException, NegativeArraySizeException, NoSuchElementException, NullPointerException, ProfileDataException, ProviderException, RasterFORMatException, SecurityException, SystemException, UndeclaredThrowableException, UnmodifiableSetException, UnsupportedOperationException </p> <p>銆銆絎崄鍏紝error鍜宔xception鏈変粈涔堝尯鍒? <br />銆銆error 琛ㄧず鎭㈠涓嶆槸涓嶅彲鑳戒絾寰堝洶闅劇殑鎯呭喌涓嬬殑涓縐嶄弗閲嶉棶棰樸傛瘮濡傝鍐呭瓨婧㈠嚭銆備笉鍙兘鎸囨湜紼嬪簭鑳藉鐞嗚繖鏍風殑鎯呭喌銆?<br />銆銆 exception 琛ㄧず涓縐嶈璁℃垨瀹炵幇闂銆備篃灝辨槸璇達紝瀹冭〃紺哄鏋滅▼搴忚繍琛屾甯革紝浠庝笉浼氬彂鐢熺殑鎯呭喌銆?</p> <p>銆銆 絎崄涔濓紝List, Set, Map鏄惁緇ф壙鑷狢ollection鎺ュ彛? <br />銆銆List錛孲et鏄?<br />銆銆Map涓嶆槸 <br />銆銆絎簩鍗侊紝abstract class鍜宨nterface鏈変粈涔堝尯鍒? <br />銆銆澹版槑鏂規硶鐨勫瓨鍦ㄨ屼笉鍘誨疄鐜板畠鐨勭被琚彨鍋氭娊璞$被錛坅bstract class錛夛紝瀹冪敤浜庤鍒涘緩涓涓綋鐜版煇浜涘熀鏈涓虹殑綾伙紝騫朵負璇ョ被澹版槑鏂規硶錛屼絾涓嶈兘鍦ㄨ綾諱腑瀹炵幇璇ョ被鐨勬儏鍐點備笉鑳藉垱寤篴bstract 綾葷殑瀹炰緥銆傜劧鑰屽彲浠ュ垱寤轟竴涓彉閲忥紝鍏剁被鍨嬫槸涓涓娊璞$被錛屽茍璁╁畠鎸囧悜鍏蜂綋瀛愮被鐨勪竴涓疄渚嬨備笉鑳芥湁鎶借薄鏋勯犲嚱鏁版垨鎶借薄闈欐佹柟娉曘侫bstract 綾葷殑瀛愮被涓哄畠浠埗綾諱腑鐨勬墍鏈夋娊璞℃柟娉曟彁渚涘疄鐜幫紝鍚﹀垯瀹冧滑涔熸槸鎶借薄綾諱負銆傚彇鑰屼唬涔嬶紝鍦ㄥ瓙綾諱腑瀹炵幇璇ユ柟娉曘傜煡閬撳叾琛屼負鐨勫叾瀹冪被鍙互鍦ㄧ被涓疄鐜拌繖浜涙柟娉曘?<br />銆銆鎺ュ彛錛坕nterface錛夋槸鎶借薄綾葷殑鍙樹綋銆傚湪鎺ュ彛涓紝鎵鏈夋柟娉曢兘鏄娊璞$殑銆傚緇ф壙鎬у彲閫氳繃瀹炵幇榪欐牱鐨勬帴鍙h岃幏寰椼傛帴鍙d腑鐨勬墍鏈夋柟娉曢兘鏄娊璞$殑錛屾病鏈変竴涓湁紼嬪簭浣撱傛帴鍙e彧鍙互瀹氫箟static final鎴愬憳鍙橀噺銆傛帴鍙g殑瀹炵幇涓庡瓙綾葷浉浼鹼紝闄や簡璇ュ疄鐜扮被涓嶈兘浠庢帴鍙e畾涔変腑緇ф壙琛屼負銆傚綋綾誨疄鐜扮壒孌婃帴鍙f椂錛屽畠瀹氫箟錛堝嵆灝嗙▼搴忎綋緇欎簣錛夋墍鏈夎繖縐嶆帴鍙g殑鏂規硶銆傜劧鍚庯紝瀹冨彲浠ュ湪瀹炵幇浜嗚鎺ュ彛鐨勭被鐨勪換浣曞璞′笂璋冪敤鎺ュ彛鐨勬柟娉曘傜敱浜庢湁鎶借薄綾伙紝瀹冨厑璁鎬嬌鐢ㄦ帴鍙e悕浣滀負寮曠敤鍙橀噺鐨勭被鍨嬨傞氬父鐨勫姩鎬佽仈緙栧皢鐢熸晥銆傚紩鐢ㄥ彲浠ヨ漿鎹㈠埌鎺ュ彛綾誨瀷鎴栦粠鎺ュ彛綾誨瀷杞崲錛宨nstanceof 榪愮畻絎﹀彲浠ョ敤鏉ュ喅瀹氭煇瀵硅薄鐨勭被鏄惁瀹炵幇浜嗘帴鍙c?<br />銆銆絎簩鍗佷竴錛宎bstract鐨刴ethod鏄惁鍙悓鏃舵槸static,鏄惁鍙悓鏃舵槸native錛屾槸鍚﹀彲鍚屾椂鏄痵ynchronized? <br />銆銆閮戒笉鑳?<br />銆銆絎簩鍗佷簩錛屾帴鍙f槸鍚﹀彲緇ф壙鎺ュ彛? 鎶借薄綾繪槸鍚﹀彲瀹炵幇(implements)鎺ュ彛? 鎶借薄綾繪槸鍚﹀彲緇ф壙瀹炰綋綾?concrete class)? <br />銆銆鎺ュ彛鍙互緇ф壙鎺ュ彛銆傛娊璞$被鍙互瀹炵幇(implements)鎺ュ彛錛屾娊璞$被鏄惁鍙戶鎵垮疄浣撶被錛屼絾鍓嶆彁鏄疄浣撶被蹇呴』鏈夋槑紜殑鏋勯犲嚱鏁般?<br />銆銆絎簩鍗佷笁錛屽惎鍔ㄤ竴涓嚎紼嬫槸鐢╮un()榪樻槸start()? <br />銆銆鍚姩涓涓嚎紼嬫槸璋冪敤start()鏂規硶錛屼嬌綰跨▼鎵浠h〃鐨勮櫄鎷熷鐞嗘満澶勪簬鍙繍琛岀姸鎬侊紝榪欐剰鍛崇潃瀹冨彲浠ョ敱JVM璋冨害騫舵墽琛屻傝繖騫朵笉鎰忓懗鐫綰跨▼灝變細绔嬪嵆榪愯銆俽un()鏂規硶鍙互浜х敓蹇呴』閫鍑虹殑鏍囧織鏉ュ仠姝竴涓嚎紼嬨?<br />銆銆絎簩鍗佸洓錛屾瀯閫犲櫒Constructor鏄惁鍙override? <br />銆銆鏋勯犲櫒Constructor涓嶈兘琚戶鎵匡紝鍥犳涓嶈兘閲嶅啓Overriding錛屼絾鍙互琚噸杞絆verloading銆?<br />銆銆絎簩鍗佷簲錛屾槸鍚﹀彲浠ョ戶鎵縎tring綾? <br />銆銆String綾繪槸final綾繪晠涓嶅彲浠ョ戶鎵褲?</p> <p>銆銆絎簩鍗佸叚錛屽綋涓涓嚎紼嬭繘鍏ヤ竴涓璞$殑涓涓猻ynchronized鏂規硶鍚庯紝鍏跺畠綰跨▼鏄惁鍙繘鍏ユ瀵硅薄鐨勫叾瀹冩柟娉? <br />銆銆涓嶈兘錛屼竴涓璞$殑涓涓猻ynchronized鏂規硶鍙兘鐢變竴涓嚎紼嬭闂?</p> <p>銆銆 絎簩鍗佷竷錛宼ry {}閲屾湁涓涓猺eturn璇彞錛岄偅涔堢揣璺熷湪榪欎釜try鍚庣殑finally {}閲岀殑code浼氫笉浼氳鎵ц錛屼粈涔堟椂鍊欒鎵ц錛屽湪return鍓嶈繕鏄悗? <br />銆銆浼氭墽琛岋紝鍦╮eturn鍓嶆墽琛屻?</p> <p>銆銆 絎簩鍗佸叓錛岀紪紼嬮: 鐢ㄦ渶鏈夋晥鐜囩殑鏂規硶綆楀嚭2涔樹互8絳夋柤鍑? <br />銆銆鏈塁鑳屾櫙鐨勭▼搴忓憳鐗瑰埆鍠滄闂繖縐嶉棶棰樸?<br />銆銆絎簩鍗佷節錛屼袱涓璞″肩浉鍚?x.equals(y) == true)錛屼絾鍗村彲鏈変笉鍚岀殑hash code錛岃繖鍙ヨ瘽瀵逛笉瀵? <br />銆銆涓嶅錛屾湁鐩稿悓鐨刪ash code銆?<br />銆銆絎笁鍗侊紝褰撲竴涓璞¤褰撲綔鍙傛暟浼犻掑埌涓涓柟娉曞悗錛屾鏂規硶鍙敼鍙樿繖涓璞$殑灞炴э紝騫跺彲榪斿洖鍙樺寲鍚庣殑緇撴灉錛岄偅涔堣繖閲屽埌搴曟槸鍊間紶閫掕繕鏄紩鐢ㄤ紶閫? <br />銆銆鏄間紶閫掋侸ava 緙栫▼璇█鍙敱鍊間紶閫掑弬鏁般傚綋涓涓璞″疄渚嬩綔涓轟竴涓弬鏁拌浼犻掑埌鏂規硶涓椂錛屽弬鏁扮殑鍊煎氨鏄璇ュ璞$殑寮曠敤銆傚璞$殑鍐呭鍙互鍦ㄨ璋冪敤鐨勬柟娉曚腑鏀瑰彉錛屼絾瀵硅薄鐨勫紩鐢ㄦ槸姘歌繙涓嶄細鏀瑰彉鐨勩?<br />銆銆絎笁鍗佷竴錛宻wtich鏄惁鑳戒綔鐢ㄥ湪byte涓婏紝鏄惁鑳戒綔鐢ㄥ湪long涓婏紝鏄惁鑳戒綔鐢ㄥ湪String涓? <br />銆銆switch錛坋xpr1錛変腑錛宔xpr1鏄竴涓暣鏁拌〃杈懼紡銆傚洜姝や紶閫掔粰 switch 鍜?case 璇彞鐨勫弬鏁板簲璇ユ槸 int銆?short銆?char 鎴栬?byte銆俵ong,string 閮戒笉鑳戒綔鐢ㄤ簬swtich銆?<br />銆銆絎笁鍗佷簩錛岀紪紼嬮: 鍐欎竴涓猄ingleton鍑烘潵銆?<br />銆銆Singleton妯″紡涓昏浣滅敤鏄繚璇佸湪Java搴旂敤紼嬪簭涓紝涓涓被Class鍙湁涓涓疄渚嬪瓨鍦ㄣ?/p> <p>聽</p> <img src ="http://www.tkk7.com/yangcai/aggbug/104540.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.tkk7.com/yangcai/" target="_blank">鏉ㄥ僵</a> 2007-03-18 09:30 <a href="http://www.tkk7.com/yangcai/archive/2007/03/18/104540.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>JAVA浠g爜緙栧啓鐨?0鏉″緩璁?/title><link>http://www.tkk7.com/yangcai/archive/2007/01/29/96605.html</link><dc:creator>鏉ㄥ僵</dc:creator><author>鏉ㄥ僵</author><pubDate>Mon, 29 Jan 2007 12:21:00 GMT</pubDate><guid>http://www.tkk7.com/yangcai/archive/2007/01/29/96605.html</guid><wfw:comment>http://www.tkk7.com/yangcai/comments/96605.html</wfw:comment><comments>http://www.tkk7.com/yangcai/archive/2007/01/29/96605.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/yangcai/comments/commentRss/96605.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/yangcai/services/trackbacks/96605.html</trackback:ping><description><![CDATA[ <p>鍒椾婦浜嗗ぇ閲忔湁鐢ㄧ殑寤鴻錛屽府鍔╁ぇ瀹惰繘琛屼綆綰х▼搴忚璁★紝騫舵彁渚涗簡浠g爜緙栧啓鐨勪竴鑸ф寚瀵鹼細 </p> <p>銆銆(1) 綾誨悕棣栧瓧姣嶅簲璇ュぇ鍐欍傚瓧孌點佹柟娉曚互鍙婂璞★紙鍙ユ焺錛夌殑棣栧瓧姣嶅簲灝忓啓銆傚浜庢墍鏈夋爣璇嗙錛屽叾涓寘鍚殑鎵鏈夊崟璇嶉兘搴旂揣闈犲湪涓璧鳳紝鑰屼笖澶у啓涓棿鍗曡瘝鐨勯瀛楁瘝銆備緥濡傦細 </p> <p>銆銆ThisIsAClassName </p> <p>銆銆thisIsMethodOrFieldName </p> <p>銆銆鑻ュ湪瀹氫箟涓嚭鐜頒簡甯告暟鍒濆鍖栧瓧絎︼紝鍒欏ぇ鍐檚tatic final鍩烘湰綾誨瀷鏍囪瘑絎︿腑鐨勬墍鏈夊瓧姣嶃傝繖鏍蜂究鍙爣蹇楀嚭瀹冧滑灞炰簬緙栬瘧鏈熺殑甯告暟銆?</p> <p>銆銆Java鍖咃紙Package錛夊睘浜庝竴縐嶇壒孌婃儏鍐碉細瀹冧滑鍏ㄩ兘鏄皬鍐欏瓧姣嶏紝鍗充究涓棿鐨勫崟璇嶄害鏄姝ゃ傚浜庡煙鍚嶆墿灞曞悕縐幫紝濡俢om錛宱rg錛宯et鎴栬卐du絳夛紝鍏ㄩ儴閮藉簲灝忓啓錛堣繖涔熸槸Java 1.1鍜孞ava 1.2鐨勫尯鍒箣涓錛夈?</p> <p>銆銆(2) 涓轟簡甯歌鐢ㄩ旇屽垱寤轟竴涓被鏃訛紝璇烽噰鍙栤滅粡鍏稿艦寮忊濓紝騫跺寘鍚涓嬭堪鍏冪礌鐨勫畾涔夛細 </p> <p>equals() </p> <p>hashCode() </p> <p>toString() </p> <p>clone()錛坕mplement Cloneable錛?</p> <p>implement Serializable </p> <p>銆銆(3) 瀵逛簬鑷繁鍒涘緩鐨勬瘡涓涓被錛岄兘鑰冭檻緗叆涓涓猰ain()錛屽叾涓寘鍚簡鐢ㄤ簬嫻嬭瘯閭d釜綾葷殑浠g爜銆備負浣跨敤涓涓」鐩腑鐨勭被錛屾垜浠病蹇呰鍒犻櫎嫻嬭瘯浠g爜銆傝嫢榪涜浜嗕換浣曞艦寮忕殑鏀瑰姩錛屽彲鏂逛究鍦拌繑鍥炴祴璇曘傝繖浜涗唬鐮佷篃鍙綔涓哄浣曚嬌鐢ㄧ被鐨勪竴涓ず渚嬩嬌鐢ㄣ?</p> <p>銆銆(4) 搴斿皢鏂規硶璁捐鎴愮畝瑕佺殑銆佸姛鑳芥у崟鍏冿紝鐢ㄥ畠鎻忚堪鍜屽疄鐜頒竴涓笉榪炵畫鐨勭被鎺ュ彛閮ㄥ垎銆傜悊鎯蟲儏鍐典笅錛屾柟娉曞簲綆鏄庢壖瑕併傝嫢闀垮害寰堝ぇ錛屽彲鑰冭檻閫氳繃鏌愮鏂瑰紡灝嗗叾鍒嗗壊鎴愯緝鐭殑鍑犱釜鏂規硶銆傝繖鏍峰仛涔熶究浜庣被鍐呬唬鐮佺殑閲嶅浣跨敤錛堟湁浜涙椂鍊欙紝鏂規硶蹇呴』闈炲父澶э紝浣嗗畠浠粛搴斿彧鍋氬悓鏍風殑涓浠朵簨鎯咃級銆?</p> <p>銆銆(5) 璁捐涓涓被鏃訛紝璇瘋韜鍦頒負瀹㈡埛紼嬪簭鍛樿冭檻涓涓嬶紙綾葷殑浣跨敤鏂規硶搴旇鏄潪甯告槑紜殑錛夈傜劧鍚庯紝鍐嶈韜鍦頒負綆$悊浠g爜鐨勪漢鑰冭檻涓涓嬶紙棰勮鏈夊彲鑳借繘琛屽摢浜涘艦寮忕殑淇敼錛屾兂鎯崇敤浠涔堟柟娉曞彲鎶婂畠浠彉寰楁洿綆鍗曪級銆?</p> <p>銆銆(6) 浣跨被灝藉彲鑳界煭灝忕簿鎮嶏紝鑰屼笖鍙В鍐充竴涓壒瀹氱殑闂銆備笅闈㈡槸瀵圭被璁捐鐨勪竴浜涘緩璁細 </p> <p>銆銆鈻犱竴涓鏉傜殑寮鍏寵鍙ワ細鑰冭檻閲囩敤鈥滃褰⑩濇満鍒?</p> <p>銆銆鈻犳暟閲忎紬澶氱殑鏂規硶娑夊強鍒扮被鍨嬪樊鍒瀬澶х殑鎿嶄綔錛氳冭檻鐢ㄥ嚑涓被鏉ュ垎鍒疄鐜?</p> <p>銆銆鈻犺澶氭垚鍛樺彉閲忓湪鐗瑰緛涓婃湁寰堝ぇ鐨勫樊鍒細鑰冭檻浣跨敤鍑犱釜綾?</p> <p>銆銆(7) 璁╀竴鍒囦笢瑗塊兘灝藉彲鑳藉湴鈥滅鏈夆濃斺攑rivate銆傚彲浣垮簱鐨勬煇涓閮ㄥ垎鈥滃叕鍏卞寲鈥濓紙涓涓柟娉曘佺被鎴栬呬竴涓瓧孌電瓑絳夛級錛屽氨姘歌繙涓嶈兘鎶婂畠鎷垮嚭銆傝嫢寮鴻鎷垮嚭錛屽氨鍙兘鐮村潖鍏朵粬浜虹幇鏈夌殑浠g爜錛屼嬌浠栦滑涓嶅緱涓嶉噸鏂扮紪鍐欏拰璁捐銆傝嫢鍙叕甯冭嚜宸卞繀欏誨叕甯冪殑錛屽氨鍙斁蹇冨ぇ鑳嗗湴鏀瑰彉鍏朵粬浠諱綍涓滆タ銆傚湪澶氱嚎紼嬬幆澧冧腑錛岄殣縐佹槸鐗瑰埆閲嶈鐨勪竴涓洜绱犫斺斿彧鏈塸rivate瀛楁鎵嶈兘鍦ㄩ潪鍚屾浣跨敤鐨勬儏鍐典笅鍙楀埌淇濇姢銆?</p> <p>銆銆(8) 璋ㄦ儠鈥滃法澶у璞$患鍚堢棁鈥濄傚涓浜涗範鎯簬欏哄簭緙栫▼鎬濈淮銆佷笖鍒濇秹OOP棰嗗煙鐨勬柊鎵嬶紝寰寰鍠滄鍏堝啓涓涓『搴忔墽琛岀殑紼嬪簭錛屽啀鎶婂畠宓屽叆涓涓垨涓や釜宸ㄥぇ鐨勫璞¢噷銆傛牴鎹紪紼嬪師鐞嗭紝瀵硅薄琛ㄨ揪鐨勫簲璇ユ槸搴旂敤紼嬪簭鐨勬蹇碉紝鑰岄潪搴旂敤紼嬪簭鏈韓銆?</p> <p>銆銆(9) 鑻ヤ笉寰楀凡榪涜涓浜涗笉澶泤瑙傜殑緙栫▼錛岃嚦灝戝簲璇ユ妸閭d簺浠g爜緗簬涓涓被鐨勫唴閮ㄣ?</p> <p>銆銆(10) 浠諱綍鏃跺欏彧瑕佸彂鐜扮被涓庣被涔嬮棿緇撳悎寰楅潪甯哥揣瀵嗭紝灝遍渶瑕佽冭檻鏄惁閲囩敤鍐呴儴綾伙紝浠庤屾敼鍠勭紪鐮佸強緇存姢宸ヤ綔錛堝弬瑙佺14绔?4.1.2灝忚妭鐨勨滅敤鍐呴儴綾繪敼榪涗唬鐮佲濓級銆?</p> <p>銆銆(11) 灝藉彲鑳界粏鑷村湴鍔犱笂娉ㄩ噴錛屽茍鐢╦avadoc娉ㄩ噴鏂囨。璇硶鐢熸垚鑷繁鐨勭▼搴忔枃妗c?</p> <p>銆銆(12) 閬垮厤浣跨敤鈥滈瓟鏈暟瀛椻濓紝榪欎簺鏁板瓧寰堥毦涓庝唬鐮佸緢濂藉湴閰嶅悎銆傚浠ュ悗闇瑕佷慨鏀瑰畠錛屾棤鐤戜細鎴愪負涓鍦哄櫓姊︼紝鍥犱負鏍規湰涓嶇煡閬撯?00鈥濆埌搴曟槸鎸団滄暟緇勫ぇ灝忊濊繕鏄滃叾浠栧叏鐒朵笉鍚岀殑涓滆タ鈥濄傛墍浠ワ紝鎴戜滑搴斿垱寤轟竴涓父鏁幫紝騫朵負鍏朵嬌鐢ㄥ叿鏈夎鏈嶅姏鐨勬弿榪版у悕縐幫紝騫跺湪鏁翠釜紼嬪簭涓兘閲囩敤甯告暟鏍囪瘑絎︺傝繖鏍峰彲浣跨▼搴忔洿鏄撶悊瑙d互鍙婃洿鏄撶淮鎶ゃ?</p> <p>銆銆(13) 娑夊強鏋勫緩鍣ㄥ拰寮傚父鐨勬椂鍊欙紝閫氬父甯屾湜閲嶆柊涓㈠純鍦ㄦ瀯寤哄櫒涓崟鑾風殑浠諱綍寮傚父鈥斺斿鏋滃畠閫犳垚浜嗛偅涓璞$殑鍒涘緩澶辮觸銆傝繖鏍蜂竴鏉ワ紝璋冪敤鑰呭氨涓嶄細浠ヤ負閭d釜瀵硅薄宸叉紜湴鍒涘緩錛屼粠鑰岀洸鐩湴緇х畫銆?</p> <p>銆銆(14) 褰撳鎴風▼搴忓憳鐢ㄥ畬瀵硅薄浠ュ悗錛岃嫢浣犵殑綾昏姹傝繘琛屼換浣曟竻闄ゅ伐浣滐紝鍙冭檻灝嗘竻闄や唬鐮佺疆浜庝竴涓壇濂藉畾涔夌殑鏂規硶閲岋紝閲囩敤綾諱技浜巆leanup()榪欐牱鐨勫悕瀛楋紝鏄庣‘琛ㄦ槑鑷繁鐨勭敤閫斻傞櫎姝や互澶栵紝鍙湪綾誨唴鏀劇疆涓涓猙oolean錛堝竷灝旓級鏍囪錛屾寚鍑哄璞℃槸鍚﹀凡琚竻闄ゃ傚湪綾葷殑finalize()鏂規硶閲岋紝璇風‘瀹氬璞″凡琚竻闄わ紝騫跺凡涓㈠純浜嗕粠RuntimeException緇ф壙鐨勪竴涓被錛堝鏋滆繕娌℃湁鐨勮瘽錛夛紝浠庤屾寚鍑轟竴涓紪紼嬮敊璇傚湪閲囧彇璞¤繖鏍風殑鏂規涔嬪墠錛岃紜畾finalize()鑳藉鍦ㄨ嚜宸辯殑緋葷粺涓伐浣滐紙鍙兘闇瑕佽皟鐢⊿ystem.runFinalizersOnExit(true)錛屼粠鑰岀‘淇濊繖涓琛屼負錛夈?</p> <p>銆銆(15) 鍦ㄤ竴涓壒瀹氱殑浣滅敤鍩熷唴錛岃嫢涓涓璞″繀欏繪竻闄わ紙闈炵敱鍨冨溇鏀墮泦鏈哄埗澶勭悊錛夛紝璇烽噰鐢ㄤ笅榪版柟娉曪細鍒濆鍖栧璞★紱鑻ユ垚鍔燂紝鍒欑珛鍗寵繘鍏ヤ竴涓惈鏈塮inally浠庡彞鐨則ry鍧楋紝寮濮嬫竻闄ゅ伐浣溿?</p> <p>銆銆(16) 鑻ュ湪鍒濆鍖栬繃紼嬩腑闇瑕佽鐩栵紙鍙栨秷錛塮inalize()錛岃璁頒綇璋冪敤super.finalize()錛堣嫢Object灞炰簬鎴戜滑鐨勭洿鎺ヨ秴綾伙紝鍒欐棤姝ゅ繀瑕侊級銆傚湪瀵筬inalize()榪涜瑕嗙洊鐨勮繃紼嬩腑錛屽super.finalize()鐨勮皟鐢ㄥ簲灞炰簬鏈鍚庝竴涓鍔紝鑰屼笉搴旀槸絎竴涓鍔紝榪欐牱鍙‘淇濆湪闇瑕佸熀紜綾葷粍浠剁殑鏃跺欏畠浠緷鐒舵湁鏁堛?</p> <p>銆銆(17) 鍒涘緩澶у皬鍥哄畾鐨勫璞¢泦鍚堟椂錛岃灝嗗畠浠紶杈撹嚦涓涓暟緇勶紙鑻ュ噯澶囦粠涓涓柟娉曢噷榪斿洖榪欎釜闆嗗悎錛屾洿搴斿姝ゆ搷浣滐級銆傝繖鏍蜂竴鏉ワ紝鎴戜滑灝卞彲浜彈鍒版暟緇勫湪緙栬瘧鏈熻繘琛岀被鍨嬫鏌ョ殑濂藉銆傛澶栵紝涓轟嬌鐢ㄥ畠浠紝鏁扮粍鐨勬帴鏀惰呬篃璁稿茍涓嶉渶瑕佸皢瀵硅薄鈥滈犲瀷鈥濆埌鏁扮粍閲屻?</p> <p>銆銆(18) 灝介噺浣跨敤interfaces錛屼笉瑕佷嬌鐢╝bstract綾匯傝嫢宸茬煡鏌愭牱涓滆タ鍑嗗鎴愪負涓涓熀紜綾伙紝閭d箞絎竴涓夋嫨搴旀槸灝嗗叾鍙樻垚涓涓猧nterface錛堟帴鍙o級銆傚彧鏈夊湪涓嶅緱涓嶄嬌鐢ㄦ柟娉曞畾涔夋垨鑰呮垚鍛樺彉閲忕殑鏃跺欙紝鎵嶉渶瑕佸皢鍏跺彉鎴愪竴涓猘bstract錛堟娊璞★級綾匯傛帴鍙d富瑕佹弿榪頒簡瀹㈡埛甯屾湜鍋氫粈涔堜簨鎯咃紝鑰屼竴涓被鍒欒嚧鍔涗簬錛堟垨鍏佽錛夊叿浣撶殑瀹炴柦緇嗚妭銆?</p> <p>銆銆(19) 鍦ㄦ瀯寤哄櫒鍐呴儴錛屽彧榪涜閭d簺灝嗗璞¤涓烘紜姸鎬佹墍闇鐨勫伐浣溿傚敖鍙兘鍦伴伩鍏嶈皟鐢ㄥ叾浠栨柟娉曪紝鍥犱負閭d簺鏂規硶鍙兘琚叾浠栦漢瑕嗙洊鎴栧彇娑堬紝浠庤屽湪鏋勫緩榪囩▼涓駭鐢熶笉鍙鐭ョ殑緇撴灉錛堝弬瑙佺7绔犵殑璇︾粏璇存槑錛夈?</p> <p>銆銆(20) 瀵硅薄涓嶅簲鍙槸綆鍗曞湴瀹圭撼涓浜涙暟鎹紱瀹冧滑鐨勮涓轟篃搴斿緱鍒拌壇濂界殑瀹氫箟銆?</p> <p>銆銆(21) 鍦ㄧ幇鎴愮被鐨勫熀紜涓婂垱寤烘柊綾繪椂錛岃棣栧厛閫夋嫨鈥滄柊寤衡濇垨鈥滃垱浣溾濄傚彧鏈夎嚜宸辯殑璁捐瑕佹眰蹇呴』緇ф壙鏃訛紝鎵嶅簲鑰冭檻榪欐柟闈㈢殑闂銆傝嫢鍦ㄦ湰鏉ュ厑璁告柊寤虹殑鍦哄悎浣跨敤浜嗙戶鎵匡紝鍒欐暣涓璁′細鍙樺緱娌℃湁蹇呰鍦板鏉傘?</p> <p>銆銆(22) 鐢ㄧ戶鎵垮強鏂規硶瑕嗙洊鏉ヨ〃紺鴻涓洪棿鐨勫樊寮傦紝鑰岀敤瀛楁琛ㄧず鐘舵侀棿鐨勫尯鍒備竴涓潪甯告瀬绔殑渚嬪瓙鏄氳繃瀵逛笉鍚岀被鐨勭戶鎵挎潵琛ㄧず棰滆壊錛岃繖鏄粷瀵瑰簲璇ラ伩鍏嶇殑錛氬簲鐩存帴浣跨敤涓涓滈鑹測濆瓧孌點?</p> <p>銆銆(23) 涓洪伩鍏嶇紪紼嬫椂閬囧埌楹葷儲錛岃淇濊瘉鍦ㄨ嚜宸辯被璺緞鎸囧埌鐨勪換浣曞湴鏂癸紝姣忎釜鍚嶅瓧閮戒粎瀵瑰簲涓涓被銆傚惁鍒欙紝緙栬瘧鍣ㄥ彲鑳藉厛鎵懼埌鍚屽悕鐨勫彟涓涓被錛屽茍鎶ュ憡鍑洪敊娑堟伅銆傝嫢鎬鐤戣嚜宸辯鍒頒簡綾昏礬寰勯棶棰橈紝璇瘋瘯璇曞湪綾昏礬寰勭殑姣忎竴涓搗鐐癸紝鎼滅儲涓涓嬪悓鍚嶇殑.class鏂囦歡銆?</p> <p>銆銆(24) 鍦↗ava 1.1 AWT涓嬌鐢ㄤ簨浠垛滈傞厤鍣ㄢ濇椂錛岀壒鍒鏄撶鍒頒竴涓櫡闃便傝嫢瑕嗙洊浜嗘煇涓傞厤鍣ㄦ柟娉曪紝鍚屾椂鎷煎啓鏂規硶娌℃湁鐗瑰埆璁茬┒錛屾渶鍚庣殑緇撴灉灝辨槸鏂版坊鍔犱竴涓柟娉曪紝鑰屼笉鏄鐩栫幇鎴愭柟娉曘傜劧鑰岋紝鐢變簬榪欐牱鍋氭槸瀹屽叏鍚堟硶鐨勶紝鎵浠ヤ笉浼氫粠緙栬瘧鍣ㄦ垨榪愯鏈熺郴緇熻幏寰椾換浣曞嚭閿欐彁紺衡斺斿彧涓嶈繃浠g爜鐨勫伐浣滃氨鍙樺緱涓嶆甯鎬簡銆?</p> <p>銆銆(25) 鐢ㄥ悎鐞嗙殑璁捐鏂規娑堥櫎鈥滀吉鍔熻兘鈥濄備篃灝辨槸璇達紝鍋囪嫢鍙渶瑕佸垱寤虹被鐨勪竴涓璞★紝灝變笉瑕佹彁鍓嶉檺鍒惰嚜宸變嬌鐢ㄥ簲鐢ㄧ▼搴忥紝騫跺姞涓婁竴鏉♀滃彧鐢熸垚鍏朵腑涓涓濇敞閲娿傝鑰冭檻灝嗗叾灝佽鎴愪竴涓滅嫭鐢熷瓙鈥濈殑褰㈠紡銆傝嫢鍦ㄤ富紼嬪簭閲屾湁澶ч噺鏁d貢鐨勪唬鐮侊紝鐢ㄤ簬鍒涘緩鑷繁鐨勫璞★紝璇瘋冭檻閲囩撼涓縐嶅垱閫犳х殑鏂規錛屽皢浜涗唬鐮佸皝瑁呰搗鏉ャ?</p> <p>銆銆(26) 璀︽儠鈥滃垎鏋愮槴鐥濄傝璁頒綇錛屾棤璁哄浣曢兘瑕佹彁鍓嶄簡瑙f暣涓」鐩殑鐘跺喌錛屽啀鍘昏冨療鍏朵腑鐨勭粏鑺傘傜敱浜庢妸鎻′簡鍏ㄥ眬錛屽彲蹇熻璇嗚嚜宸辨湭鐭ョ殑涓浜涘洜绱狅紝闃叉鍦ㄨ冨療緇嗚妭鐨勬椂鍊欓櫡鍏モ滄閫昏緫鈥濅腑銆?</p> <p>銆銆(27) 璀︽儠鈥滆繃鏃╀紭鍖栤濄傞鍏堣瀹冭繍琛岃搗鏉ワ紝鍐嶈冭檻鍙樺緱鏇村揩鈥斺斾絾鍙湁鍦ㄨ嚜宸卞繀欏昏繖鏍峰仛銆佽屼笖緇忚瘉瀹炲湪鏌愰儴鍒嗕唬鐮佷腑鐨勭‘瀛樺湪涓涓ц兘鐡墮鐨勬椂鍊欙紝鎵嶅簲榪涜浼樺寲銆傞櫎闈炵敤涓撻棬鐨勫伐鍏峰垎鏋愮摱棰堬紝鍚﹀垯寰堟湁鍙兘鏄湪嫻垂鑷繁鐨勬椂闂淬傛ц兘鎻愬崌鐨勯殣鍚唬浠鋒槸鑷繁鐨勪唬鐮佸彉寰楅毦浜庣悊瑙o紝鑰屼笖闅句簬緇存姢銆?</p> <p>銆銆(28) 璇瘋浣忥紝闃呰浠g爜鐨勬椂闂存瘮鍐欎唬鐮佺殑鏃墮棿澶氬緱澶氥傛濊礬娓呮櫚鐨勮璁″彲鑾峰緱鏄撲簬鐞嗚В鐨勭▼搴忥紝浣嗘敞閲娿佺粏鑷寸殑瑙i噴浠ュ強涓浜涚ず渚嬪線寰鍏鋒湁涓嶅彲浼伴噺鐨勪環鍊箋傛棤璁哄浣犺嚜宸憋紝榪樻槸瀵瑰悗鏉ョ殑浜猴紝瀹冧滑閮芥槸鐩稿綋閲嶈鐨勩傚瀵規浠嶆湁鎬鐤戯紝閭d箞璇瘋瘯鎯寵嚜宸辮瘯鍥句粠鑱旀満Java鏂囨。閲屾壘鍑烘湁鐢ㄤ俊鎭椂紕板埌鐨勬尗鎶橈紝榪欐牱鎴栬鑳藉皢浣犺鏈嶃?</p> <p>銆銆(29) 濡傝涓鴻嚜宸卞凡榪涜浜嗚壇濂界殑鍒嗘瀽銆佽璁℃垨鑰呭疄鏂斤紝閭d箞璇風◢寰洿鎹竴涓嬫濈淮瑙掑害銆傝瘯璇曢個璇蜂竴浜涘鏉ヤ漢澹斺斿茍涓嶄竴瀹氭槸涓撳錛屼絾鍙互鏄潵鑷湰鍏徃鍏朵粬閮ㄩ棬鐨勪漢銆傝浠栦滑鐢ㄥ畬鍏ㄦ柊椴滅殑鐪煎厜鑰冨療浣犵殑宸ヤ綔錛岀湅鐪嬫槸鍚﹁兘鎵懼嚭浣犱竴搴︾啛瑙嗘棤鐫圭殑闂銆傞噰鍙栬繖縐嶆柟寮忥紝寰寰鑳藉湪鏈閫傚悎淇敼鐨勯樁孌墊壘鍑轟竴浜涘叧閿х殑闂錛岄伩鍏嶄駭鍝佸彂琛屽悗鍐嶈В鍐抽棶棰樿岄犳垚鐨勯噾閽卞強綺懼姏鏂歸潰鐨勬崯澶便?</p> <p>銆銆(30) 鑹ソ鐨勮璁¤兘甯︽潵鏈澶х殑鍥炴姤銆傜畝璦涔嬶紝瀵逛簬涓涓壒瀹氱殑闂錛岄氬父浼氳姳杈冮暱鐨勬椂闂存墠鑳芥壘鍒頒竴縐嶆渶鎭板綋鐨勮В鍐蟲柟妗堛備絾涓鏃︽壘鍒頒簡姝g‘鐨勬柟娉曪紝浠ュ悗鐨勫伐浣滃氨杞繪澗澶氫簡錛屽啀涔熶笉鐢ㄧ粡鍘嗘暟灝忔椂銆佹暟澶╂垨鑰呮暟鏈堢殑鐥涜嫤鎸f墡銆傛垜浠殑鍔姏宸ヤ綔浼氬甫鏉ユ渶澶х殑鍥炴姤錛堢敋鑷蟲棤鍙及閲忥級銆傝屼笖鐢變簬鑷繁鍊炬敞浜嗗ぇ閲忓績琛錛屾渶緇堣幏寰椾竴涓嚭鑹茬殑璁捐鏂規錛屾垚鍔熺殑蹇劅涔熸槸浠や漢蹇冨姩鐨勩傚潥鎸佹姷鍒惰崏鑽夊畬宸ョ殑璇辨儜鈥斺旈偅鏍峰仛寰寰寰椾笉鍋垮け銆?</p> <p>銆銆(31) 鍙湪Web涓婃壘鍒板ぇ閲忕殑緙栫▼鍙傝冭祫婧愶紝鐢氳嚦鍖呮嫭澶ч噺鏂伴椈緇勩佽璁虹粍銆侀偖瀵勫垪琛ㄧ瓑銆偮犅犅犅犅犅?<br /></p> <img src ="http://www.tkk7.com/yangcai/aggbug/96605.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" 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