锘??xml version="1.0" encoding="utf-8" standalone="yes"?> 銆銆1. Java涓殑娉涘瀷鏄粈涔?? 浣跨敤娉涘瀷鐨勫ソ澶勬槸浠涔? 銆銆榪欐槸鍦ㄥ悇縐岼ava娉涘瀷闈㈣瘯涓紝涓寮鍦轟綘灝變細琚棶鍒扮殑闂涓殑涓涓紝涓昏闆嗕腑鍦ㄥ垵綰у拰涓駭闈㈣瘯涓傞偅浜涙嫢鏈塉ava1.4鎴栨洿鏃╃増鏈殑寮鍙戣儗鏅殑浜洪兘鐭ラ亾錛?a rel="nofollow" style="color: #0d4ac6; text-decoration: none;">鍦ㄩ泦鍚堜腑瀛樺偍瀵硅薄騫跺湪浣跨敤鍓嶈繘琛岀被鍨嬭漿鎹㈡槸澶氫箞鐨勪笉鏂逛究銆傛硾鍨嬮槻姝簡閭g鎯呭喌鐨勫彂鐢熴傚畠鎻愪緵浜嗙紪璇戞湡鐨勭被鍨嬪畨鍏紝紜繚浣犲彧鑳芥妸姝g‘綾誨瀷鐨勫璞℃斁鍏ラ泦鍚堜腑錛岄伩鍏嶄簡鍦ㄨ繍琛屾椂鍑虹幇ClassCastException銆?/p> 銆銆2. Java鐨勬硾鍨嬫槸濡備綍宸ヤ綔鐨?? 浠涔堟槸綾誨瀷鎿﹂櫎 ? 銆銆榪欐槸涓閬撴洿濂界殑娉涘瀷闈㈣瘯棰樸傛硾鍨嬫槸閫氳繃綾誨瀷鎿﹂櫎鏉ュ疄鐜扮殑錛岀紪璇戝櫒鍦ㄧ紪璇戞椂鎿﹂櫎浜嗘墍鏈夌被鍨嬬浉鍏崇殑淇℃伅錛屾墍浠ュ湪榪愯鏃朵笉瀛樺湪浠諱綍綾誨瀷鐩稿叧鐨勪俊鎭備緥濡侺ist<String>鍦ㄨ繍琛屾椂浠呯敤涓涓?a rel="nofollow" style="color: #0d4ac6; text-decoration: none;">List鏉ヨ〃紺恒傝繖鏍峰仛鐨勭洰鐨勶紝鏄‘淇濊兘鍜孞ava 5涔嬪墠鐨勭増鏈紑鍙戜簩榪涘埗綾誨簱榪涜鍏煎銆備綘鏃犳硶鍦ㄨ繍琛屾椂璁塊棶鍒扮被鍨嬪弬鏁幫紝鍥犱負緙栬瘧鍣ㄥ凡緇忔妸娉涘瀷綾誨瀷杞崲鎴愪簡鍘熷綾誨瀷銆傛牴鎹綘瀵硅繖涓硾鍨嬮棶棰樼殑鍥炵瓟鎯呭喌錛屼綘浼氬緱鍒頒竴浜涘悗緇彁闂紝姣斿涓轟粈涔堟硾鍨嬫槸鐢辯被鍨嬫摝闄ゆ潵瀹炵幇鐨勬垨鑰呯粰浣犲睍紺轟竴浜涗細瀵艱嚧緙栬瘧鍣ㄥ嚭閿欑殑閿欒娉涘瀷浠g爜銆傝闃呰鎴戠殑Java涓硾鍨嬫槸濡備綍宸ヤ綔鐨?/a>鏉ヤ簡瑙f洿澶氫俊鎭?/p> 銆銆3. 浠涔堟槸娉涘瀷涓殑闄愬畾閫氶厤絎﹀拰闈為檺瀹氶氶厤絎?? 銆銆榪欐槸鍙︿竴涓潪甯?a rel="nofollow" style="color: #0d4ac6; text-decoration: none;">嫻佽鐨凧ava娉涘瀷闈㈣瘯棰?/a>銆傞檺瀹氶氶厤絎﹀綾誨瀷榪涜浜嗛檺鍒躲傛湁涓ょ闄愬畾閫氶厤絎︼紝涓縐嶆槸<? extends T>瀹冮氳繃紜繚綾誨瀷蹇呴』鏄疶鐨勫瓙綾繪潵璁懼畾綾誨瀷鐨勪笂鐣岋紝鍙︿竴縐嶆槸<? super T>瀹冮氳繃紜繚綾誨瀷蹇呴』鏄疶鐨勭埗綾繪潵璁懼畾綾誨瀷鐨勪笅鐣屻傛硾鍨嬬被鍨嬪繀欏葷敤闄愬畾鍐呯殑綾誨瀷鏉ヨ繘琛屽垵濮嬪寲錛屽惁鍒欎細瀵艱嚧緙栬瘧閿欒銆傚彟涓鏂歸潰<?>琛ㄧず浜嗛潪闄愬畾閫氶厤絎︼紝鍥犱負<?>鍙互鐢ㄤ換鎰忕被鍨嬫潵鏇夸唬銆傛洿澶氫俊鎭鍙傞槄鎴戠殑鏂囩珷娉涘瀷涓檺瀹氶氶厤絎﹀拰闈為檺瀹氶氶厤絎︿箣闂寸殑鍖哄埆銆?/p> 銆銆4. List<? extends T>鍜孡ist <? super T>涔嬮棿鏈変粈涔堝尯鍒?? 銆銆榪欏拰涓婁竴涓潰璇曢鏈夎仈緋伙紝鏈夋椂闈㈣瘯瀹樹細鐢ㄨ繖涓棶棰樻潵璇勪及浣犲娉涘瀷鐨勭悊瑙o紝鑰屼笉鏄洿鎺ラ棶浣犱粈涔堟槸闄愬畾閫氶厤絎﹀拰闈為檺瀹氶氶厤絎︺傝繖涓や釜List鐨勫0鏄庨兘鏄?a rel="nofollow" style="color: #0d4ac6; text-decoration: none;">闄愬畾閫氶厤絎︾殑渚嬪瓙 銆銆5. 濡備綍緙栧啓涓涓硾鍨嬫柟娉曪紝璁╁畠鑳芥帴鍙楁硾鍨嬪弬鏁板茍榪斿洖娉涘瀷綾誨瀷? 銆銆緙栧啓娉涘瀷鏂規硶騫朵笉鍥伴毦錛屼綘闇瑕佺敤娉涘瀷綾誨瀷鏉ユ浛浠e師濮嬬被鍨嬶紝姣斿浣跨敤T, E or K,V絳夎騫挎硾璁ゅ彲鐨勭被鍨嬪崰浣嶇銆傛硾鍨嬫柟娉曠殑渚嬪瓙璇峰弬闃?a rel="nofollow" style="color: #0d4ac6; text-decoration: none;">Java闆嗗悎綾繪鏋?/a>銆傛渶綆鍗曠殑鎯呭喌涓嬶紝涓涓硾鍨嬫柟娉曞彲鑳戒細鍍忚繖鏍? 銆銆6. Java涓浣曚嬌鐢ㄦ硾鍨嬬紪鍐欏甫鏈夊弬鏁扮殑綾? 銆銆榪欐槸涓婁竴閬撻潰璇曢鐨勫歡浼搞傞潰璇曞畼鍙兘浼氳姹備綘鐢ㄦ硾鍨嬬紪鍐欎竴涓被鍨嬪畨鍏ㄧ殑綾伙紝鑰屼笉鏄紪鍐欎竴涓硾鍨嬫柟娉曘傚叧閿粛鐒舵槸浣跨敤娉涘瀷綾誨瀷鏉ヤ唬鏇垮師濮嬬被鍨嬶紝鑰屼笖瑕佷嬌鐢↗DK涓噰鐢ㄧ殑鏍囧噯鍗犱綅絎︺?/p> 銆銆7. 緙栧啓涓孌墊硾鍨嬬▼搴忔潵瀹炵幇LRU緙撳瓨? 銆銆瀵逛簬鍠滄Java緙栫▼鐨勪漢鏉ヨ榪欑浉褰撲簬鏄竴嬈$粌涔犮傜粰浣犱釜鎻愮ず錛孡inkedHashMap鍙互鐢ㄦ潵瀹炵幇鍥哄畾澶у皬鐨凩RU緙撳瓨錛屽綋LRU緙撳瓨宸茬粡婊′簡鐨勬椂鍊欙紝瀹冧細鎶婃渶鑰佺殑閿煎縐誨嚭緙撳瓨銆侺inkedHashMap鎻愪緵浜嗕竴涓О涓簉emoveEldestEntry()鐨勬柟娉曪紝璇ユ柟娉曚細琚玴ut()鍜宲utAll()璋冪敤鏉ュ垹闄ゆ渶鑰佺殑閿煎銆傚綋鐒訛紝濡傛灉浣犲凡緇忕紪鍐欎簡涓涓彲榪愯鐨?a rel="nofollow" style="color: #0d4ac6; text-decoration: none;">JUnit嫻嬭瘯錛屼綘涔熷彲浠ラ殢鎰忕紪鍐欎綘鑷繁鐨勫疄鐜頒唬鐮併?/p> 銆銆8. 浣犲彲浠ユ妸List<String>浼犻掔粰涓涓帴鍙桳ist<Object>鍙傛暟鐨勬柟娉曞悧錛?/strong> 銆銆瀵逛換浣曚竴涓笉澶啛鎮夋硾鍨嬬殑浜烘潵璇達紝榪欎釜Java娉涘瀷棰樼洰鐪嬭搗鏉ヤ護浜虹枒鎯戯紝鍥犱負涔嶇湅璧鋒潵String鏄竴縐峅bject錛屾墍浠ist<String>搴斿綋鍙互鐢ㄥ湪闇瑕丩ist<Object>鐨勫湴鏂癸紝浣嗘槸浜嬪疄騫墮潪濡傛銆傜湡榪欐牱鍋氱殑璇濅細瀵艱嚧緙栬瘧閿欒銆傚鏋滀綘鍐嶆繁涓姝ヨ冭檻錛屼綘浼氬彂鐜癑ava榪欐牱鍋氭槸鏈夋剰涔夌殑錛屽洜涓篖ist<Object>鍙互瀛樺偍浠諱綍綾誨瀷鐨勫璞″寘鎷?a rel="nofollow" style="color: #0d4ac6; text-decoration: none;">String, Integer絳夌瓑錛岃孡ist<String>鍗村彧鑳界敤鏉ュ瓨鍌⊿trings銆?/p> 銆銆9. Array涓彲浠ョ敤娉涘瀷鍚? 銆銆榪欏彲鑳芥槸Java娉涘瀷闈㈣瘯棰樹腑鏈綆鍗曠殑涓涓簡錛屽綋鐒跺墠鎻愭槸浣犺鐭ラ亾Array浜嬪疄涓婂茍涓嶆敮鎸佹硾鍨嬶紝榪欎篃鏄負浠涔圝oshua Bloch鍦?a rel="nofollow" style="color: #0d4ac6; text-decoration: none;">Effective Java涓涔︿腑寤鴻浣跨敤List鏉ヤ唬鏇緼rray錛屽洜涓篖ist鍙互鎻愪緵緙栬瘧鏈熺殑綾誨瀷瀹夊叏淇濊瘉錛岃孉rray鍗翠笉鑳姐?/p> 銆銆10. 濡備綍闃繪Java涓殑綾誨瀷鏈鏌ョ殑璀﹀憡? 銆銆濡傛灉浣犳妸娉涘瀷鍜屽師濮嬬被鍨嬫販鍚堣搗鏉ヤ嬌鐢紝渚嬪涓嬪垪浠g爜錛孞ava 5鐨刯avac緙栬瘧鍣ㄤ細浜х敓綾誨瀷鏈鏌ョ殑璀﹀憡錛屼緥濡?/p> 銆銆榪欑璀﹀憡鍙互浣跨敤@SuppressWarnings("unchecked")娉ㄨВ鏉ュ睆钄姐?/p> 銆銆Java娉涘瀷闈㈣瘯棰樿ˉ鍏呮洿鏂? 銆銆鎴戞墜澶村張鎷垮埌浜嗗嚑涓狫ava娉涘瀷闈㈣瘯棰樿窡澶у鍒嗕韓涓嬶紝榪欏嚑閬撻闆嗕腑鍦ㄦ硾鍨嬬被鍨嬪拰鍘熷綾誨瀷鐨勫尯鍒笂錛屼互鍙婃垜浠槸鍚﹀彲浠ョ敤Object鏉ヤ唬鏇塊檺瀹氶氶厤絎︾殑浣跨敤絳夌瓑錛?/p> 銆銆Java涓璍ist<Object>鍜屽師濮嬬被鍨婰ist涔嬮棿鐨勫尯鍒? 銆銆鍘熷綾誨瀷鍜屽甫鍙傛暟綾誨瀷<Object>涔嬮棿鐨勪富瑕佸尯鍒槸錛屽湪緙栬瘧鏃?a rel="nofollow" style="color: #0d4ac6; text-decoration: none;">緙栬瘧鍣?/a>涓嶄細瀵瑰師濮嬬被鍨嬭繘琛岀被鍨嬪畨鍏ㄦ鏌ワ紝鍗翠細瀵瑰甫鍙傛暟鐨勭被鍨嬭繘琛屾鏌ワ紝閫氳繃浣跨敤Object浣滀負綾誨瀷錛屽彲浠ュ憡鐭ョ紪璇戝櫒璇ユ柟娉曞彲浠ユ帴鍙椾換浣曠被鍨嬬殑瀵硅薄錛屾瘮濡係tring鎴朓nteger銆傝繖閬撻鐨勮冨療鐐瑰湪浜庡娉涘瀷涓師濮嬬被鍨嬬殑姝g‘鐞嗚В銆傚畠浠箣闂寸殑絎簩鐐瑰尯鍒槸錛屼綘鍙互鎶婁換浣曞甫鍙傛暟鐨勭被鍨嬩紶閫掔粰鍘熷綾誨瀷List錛屼絾鍗翠笉鑳芥妸List<String>浼犻掔粰鎺ュ彈List<Object>鐨勬柟娉曪紝鍥犱負浼氫駭鐢熷彉寮傞敊璇傛洿澶氳緇嗕俊鎭鍙傞槄Java涓殑娉涘瀷鏄浣曞伐浣滅殑銆?/p> 銆銆Java涓璍ist<?>鍜孡ist<Object>涔嬮棿鐨勫尯鍒槸浠涔? 銆銆榪欓亾棰樿窡涓婁竴閬撻鐪嬭搗鏉ュ緢鍍忥紝瀹炶川涓婂嵈瀹屽叏涓嶅悓銆侺ist<?> 鏄竴涓湭鐭ョ被鍨嬬殑List錛岃孡ist<Object>鍏跺疄鏄換鎰忕被鍨嬬殑List銆備綘鍙互鎶奓ist<String>, List<Integer>璧嬪肩粰List<?>錛屽嵈涓嶈兘鎶奓ist<String>璧嬪肩粰List<Object>銆?nbsp; 銆銆鎯充簡瑙f洿澶氬叧浜庨氶厤絎︾殑淇℃伅璇鋒煡鐪?a rel="nofollow" style="color: #0d4ac6; text-decoration: none;">Java涓殑娉涘瀷閫氶厤絎︾ず渚?/a> 銆銆List<String>鍜屽師濮嬬被鍨婰ist涔嬮棿鐨勫尯鍒? 銆銆璇ラ綾諱技浜?#8220;鍘熷綾誨瀷鍜屽甫鍙傛暟綾誨瀷涔嬮棿鏈変粈涔堝尯鍒?#8221;銆傚甫鍙傛暟綾誨瀷鏄被鍨嬪畨鍏ㄧ殑錛岃屼笖鍏剁被鍨嬪畨鍏ㄦ槸鐢辯紪璇戝櫒淇濊瘉鐨勶紝浣?a rel="nofollow" style="color: #0d4ac6; text-decoration: none;">鍘熷綾誨瀷List鍗翠笉鏄被鍨嬪畨鍏ㄧ殑銆備綘涓嶈兘鎶奡tring涔嬪鐨勪換浣曞叾瀹冪被鍨嬬殑Object瀛樺叆String綾誨瀷鐨凩ist涓紝鑰屼綘鍙互鎶婁換浣曠被鍨嬬殑瀵硅薄瀛樺叆鍘熷List涓備嬌鐢ㄦ硾鍨嬬殑甯﹀弬鏁扮被鍨嬩綘涓嶉渶瑕佽繘琛岀被鍨嬭漿鎹紝浣嗘槸瀵逛簬鍘熷綾誨瀷錛屼綘鍒欓渶瑕佽繘琛屾樉寮忕殑綾誨瀷杞崲銆?/p> 榪欏甫鏉ヤ簡寰堝濂藉錛?br /> 2錛屾秷闄ゅ己鍒剁被鍨嬭漿鎹€?/strong> 娉涘瀷鐨勪竴涓檮甯﹀ソ澶勬槸錛屾秷闄ゆ簮浠g爜涓殑璁稿寮哄埗綾誨瀷杞崲銆傝繖浣垮緱浠g爜鏇村姞鍙錛屽茍涓斿噺灝戜簡鍑洪敊鏈轟細銆?/p> 3錛屾綔鍦ㄧ殑鎬ц兘鏀剁泭銆?/strong> 娉涘瀷涓鴻緝澶х殑浼樺寲甯︽潵鍙兘銆傚湪娉涘瀷鐨勫垵濮嬪疄鐜頒腑錛岀紪璇戝櫒灝嗗己鍒剁被鍨嬭漿鎹紙娌℃湁娉涘瀷鐨勮瘽錛岀▼搴忓憳浼氭寚瀹氳繖浜涘己鍒剁被鍨嬭漿鎹級鎻掑叆鐢熸垚鐨勫瓧鑺傜爜涓備絾鏄洿澶氱被鍨嬩俊鎭彲鐢ㄤ簬緙栬瘧鍣ㄨ繖涓浜嬪疄錛屼負鏈潵鐗堟湰鐨?JVM 鐨勪紭鍖栧甫鏉ュ彲鑳姐傜敱浜庢硾鍨嬬殑瀹炵幇鏂瑰紡錛屾敮鎸佹硾鍨嬶紙鍑犱箮錛変笉闇瑕?JVM 鎴栫被鏂囦歡鏇存敼銆傛墍鏈夊伐浣滈兘鍦ㄧ紪璇戝櫒涓畬鎴愶紝緙栬瘧鍣ㄧ敓鎴愮被浼間簬娌℃湁娉涘瀷錛堝拰寮哄埗綾誨瀷杞崲錛夋椂鎵鍐欑殑浠g爜錛屽彧鏄洿鑳界‘淇濈被鍨嬪畨鍏ㄨ屽凡銆?/p> Java璇█寮曞叆娉涘瀷鐨勫ソ澶勬槸瀹夊叏綆鍗曘傛硾鍨嬬殑濂藉鏄湪緙栬瘧鐨勬椂鍊欐鏌ョ被鍨嬪畨鍏紝騫朵笖鎵鏈夌殑寮哄埗杞崲閮芥槸鑷姩鍜岄殣寮忕殑錛屾彁楂樹唬鐮佺殑閲嶇敤鐜囥?/p> 娉涘瀷鍦ㄤ嬌鐢ㄤ腑榪樻湁涓浜涜鍒欏拰闄愬埗錛?br /> 1銆佹硾鍨嬬殑綾誨瀷鍙傛暟鍙兘鏄被綾誨瀷錛堝寘鎷嚜瀹氫箟綾伙級錛屼笉鑳芥槸綆鍗曠被鍨嬨?br /> 2銆佸悓涓縐嶆硾鍨嬪彲浠ュ搴斿涓増鏈紙鍥犱負鍙傛暟綾誨瀷鏄笉紜畾鐨勶級錛屼笉鍚岀増鏈殑娉涘瀷綾誨疄渚嬫槸涓嶅吋瀹圭殑銆?br /> 3銆佹硾鍨嬬殑綾誨瀷鍙傛暟鍙互鏈夊涓?br /> 4銆佹硾鍨嬬殑鍙傛暟綾誨瀷鍙互浣跨敤extends璇彞錛屼緥濡?lt;T extends superclass>銆備範鎯笂鎴愪負“鏈夌晫綾誨瀷”銆?br /> 5銆佹硾鍨嬬殑鍙傛暟綾誨瀷榪樺彲浠ユ槸閫氶厤絎︾被鍨嬨備緥濡侰lass<?> classType = Class.forName(Java.lang.String);
eclipse 4.4涓嶅吋瀹硅鎻掍歡
eclipse 4.4鐨剉m鏂版彃浠訛細http://plugin.tqlab.com/eclipse/velocityeditor/update/
]]>
]]>
]]>
瑁呯錛氬湪鍫嗕腑寤虹珛涓涓狾bject瀹炰緥錛屾妸浣犳寚瀹氱殑鍊煎鍒舵垚鍘?/span>錛?/span>***鎷嗙錛氬垽鍒紩鐢ㄦ寚鍚戠殑鍫嗕腑淇℃伅鏄惁鏄鎷嗘垚鐨勭被鍨嬶紝鏄彇鍑哄爢涓奸佺粰鏍堜腑鍙橀噺錛屽惁鍒欐姤寮傚父
//鍦?128~127 涔嬪鐨勬暟
Integer num1 = 297; Integer num2 = 297;
System.out.println("num1==num2: "+(num1==num2));
// 鍦?128~127 涔嬪唴鐨勬暟
Integer num3 = 97; Integer num4 = 97;
System.out.println("num3==num4: "+(num3==num4)); 鎵撳嵃鐨勭粨鏋滄槸錛歯um1==num2: false num3==num4: true
寰堝鎬惂錛氳繖灝卞綊緇撲簬java瀵逛簬Integer涓巌nt鐨勮嚜鍔ㄨ綆變笌鎷嗙鐨勮璁★紝鏄竴縐嶆ā寮忥細鍙韓鍏冩ā寮忥紙flyweight錛?nbsp;
涓轟簡鍔犲ぇ瀵圭畝鍗曟暟瀛楃殑閲嶅埄鐢紝java瀹氫箟錛氬湪鑷姩瑁呯鏃跺浜庡間粠–128鍒?27涔嬮棿鐨勫鹼紝瀹冧滑琚綆變負Integer瀵硅薄鍚庯紝浼氬瓨鍦ㄥ唴瀛樹腑琚噸鐢紝濮嬬粓鍙瓨鍦ㄤ竴涓璞?nbsp;
鑰屽鏋滆秴榪囦簡浠?#8211;128鍒?27涔嬮棿鐨勫鹼紝琚綆卞悗鐨処nteger瀵硅薄騫朵笉浼氳閲嶇敤錛屽嵆鐩稿綋浜庢瘡嬈¤綆辨椂閮芥柊寤轟竴涓?Integer瀵硅薄錛?/strong>鏄庣櫧浜嗗惂
浠ヤ笂鐨勭幇璞℃槸鐢變簬浣跨敤浜嗚嚜鍔ㄨ綆辨墍寮曡搗鐨勶紝濡傛灉浣犳病鏈変嬌鐢ㄨ嚜鍔ㄨ綆憋紝鑰屾槸璺熶竴鑸被涓鏍鳳紝鐢╪ew鏉ヨ繘琛屽疄渚嬪寲錛屽氨浼氭瘡嬈ew灝遍兘涓涓柊鐨勫璞★紱
]]>public V put(K key, V value) { return cache.put(key, value); }
List<Object> objectList; List<String> stringList; objectList = stringList; //compilation error incompatible types
List<String> rawList = new ArrayList() 娉ㄦ剰: Hello.java浣跨敤浜嗘湭媯鏌ユ垨縐頒負涓嶅畨鍏ㄧ殑鎿嶄綔;
List<?> listOfAnyType; List<Object> listOfObject = new ArrayList<Object>(); List<String> listOfString = new ArrayList<String>(); List<Integer> listOfInteger = new ArrayList<Integer>(); listOfAnyType = listOfString; //legal listOfAnyType = listOfInteger; //legal listOfObjectType = (List<Object>) listOfString; //compiler error - in-convertible types
List listOfRawTypes = new ArrayList(); listOfRawTypes.add("abc"); listOfRawTypes.add(123); //緙栬瘧鍣ㄥ厑璁歌繖鏍?- 榪愯鏃跺嵈浼氬嚭鐜板紓甯?String item = (String) listOfRawTypes.get(0); //闇瑕佹樉寮忕殑綾誨瀷杞崲 item = (String) listOfRawTypes.get(1); //鎶汣lassCastException錛屽洜涓篒nteger涓嶈兘琚漿鎹負String List<String> listOfString = new ArrayList(); listOfString.add("abcd"); listOfString.add(1234); //緙栬瘧閿欒錛屾瘮鍦ㄨ繍琛屾椂鎶涘紓甯歌濂?item = listOfString.get(0); //涓嶉渶瑕佹樉寮忕殑綾誨瀷杞崲 - 緙栬瘧鍣ㄨ嚜鍔ㄨ漿鎹?
]]>
1錛岀被鍨嬪畨鍏ㄣ?/strong> 娉涘瀷鐨勪富瑕佺洰鏍囨槸鎻愰珮 Java 紼嬪簭鐨勭被鍨嬪畨鍏ㄣ傞氳繃鐭ラ亾浣跨敤娉涘瀷瀹氫箟鐨勫彉閲忕殑綾誨瀷闄愬埗錛岀紪璇戝櫒鍙互鍦ㄤ竴涓珮寰楀鐨勭▼搴︿笂楠岃瘉綾誨瀷鍋囪銆傛病鏈夋硾鍨嬶紝榪欎簺鍋囪灝卞彧瀛樺湪浜庣▼搴忓憳鐨勫ご鑴戜腑錛堟垨鑰呭鏋滃垢榪愮殑璇濓紝榪樺瓨鍦ㄤ簬浠g爜娉ㄩ噴涓級銆?/p>
]]>
1銆佸弬鏁板垪琛ㄥ繀欏誨畬鍏ㄤ笌琚噸鍐欑殑鏂規硶鐩稿悓錛屽惁鍒欎笉鑳界О鍏朵負閲嶅啓鑰屾槸閲嶈澆銆?/span>
2銆佽繑鍥炵殑綾誨瀷蹇呴』涓鐩翠笌琚噸鍐欑殑鏂規硶鐨勮繑鍥炵被鍨嬬浉鍚岋紝鍚﹀垯涓嶈兘縐板叾涓洪噸鍐欒屾槸閲嶈澆銆?/span>
3銆佽闂慨楗扮鐨勯檺鍒朵竴瀹氳澶т簬琚噸鍐欐柟娉曠殑璁塊棶淇グ絎︼紙public>protected>default>private錛?/span>
4銆侀噸鍐欐柟娉曚竴瀹氫笉鑳芥姏鍑烘柊鐨勬鏌ュ紓甯告垨鑰呮瘮琚噸鍐欐柟娉曠敵鏄庢洿鍔犲娉涚殑媯鏌ュ瀷寮傚父銆備緥濡傦細
鐖剁被鐨勪竴涓柟娉曠敵鏄庝簡涓涓鏌ュ紓甯窱OException錛屽湪閲嶅啓榪欎釜鏂規硶鏄氨涓嶈兘鎶涘嚭Exception,鍙兘鎶涘嚭IOException鐨勫瓙綾誨紓甯革紝鍙互鎶涘嚭闈炴鏌ュ紓甯搞?/span>
鑰岄噸杞界殑瑙勫垯錛?/span>
1銆佸繀欏誨叿鏈変笉鍚岀殑鍙傛暟鍒楄〃錛?/span>
2銆佸彲浠ユ湁涓嶈矗楠傜殑榪斿洖綾誨瀷錛屽彧瑕佸弬鏁板垪琛ㄤ笉鍚屽氨鍙互浜嗭紱
3銆佸彲浠ユ湁涓嶅悓鐨勮闂慨楗扮錛?/span>
4銆佸彲浠ユ姏鍑轟笉鍚岀殑寮傚父錛?/span>
閲嶅啓涓庨噸杞界殑鍖哄埆鍦ㄤ簬錛?/span>
閲嶅啓澶氭佹ц搗浣滅敤錛屽璋冪敤琚噸杞借繃鐨勬柟娉曞彲浠ュぇ澶у噺灝戜唬鐮佺殑杈撳叆閲忥紝鍚屼竴涓柟娉曞悕鍙寰閲岄潰浼犻掍笉鍚岀殑鍙傛暟灝卞彲浠ユ嫢鏈変笉鍚岀殑鍔熻兘鎴栬繑鍥炲箋?/span>
鐢ㄥソ閲嶅啓鍜岄噸杞藉彲浠ヨ璁′竴涓粨鏋勬竻鏅拌岀畝媧佺殑綾伙紝鍙互璇撮噸鍐欏拰閲嶈澆鍦ㄧ紪鍐欎唬鐮佽繃紼嬩腑鐨勪綔鐢ㄩ潪鍚屼竴鑸?