聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)2錛夐潰鍚戝璞¤璁?>妯″紡璁捐->妗嗘灦璁捐
聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)3錛塉2EE錛歋truts, Jsp/Servlet, Spring maybe JSF
聽(tīng)聽(tīng)聽(tīng)聽(tīng)
聽(tīng)聽(tīng)聽(tīng)璇劇▼璁″垝錛氭病寰楁瘯涓氶偅灝卞畬铔嬩簡(jiǎn):-)
聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)1錛夌畻娉曪細(xì)璺熸湰縐戝樊涓嶅錛屽氨綆椾負(fù)鎵懼伐浣滐紝涔熷繀欏婚噸鏂板涔?fàn)鍜屽濂?br />聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)2錛塸rogramming verification/english: 蹇呬慨璇撅紝闈㈠瓙濂借繃錛屼笉瑕佸お宸簡(jiǎn)
聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)3錛夊祵鍏ュ紡澶氬獟浣?綆椾簡(jiǎn)錛屽強(qiáng)鏍煎氨琛?錛屽瘑鐮佸(璁烘枃鐩稿叧錛屽ソ濂芥悶鎼?
聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)鎬ц兘鍒嗘瀽錛屽緩妯′豢鐪?鑰佹澘鐨勬柟鍚戯紝鑰佹澘搴旇涓嶄細(xì)緇欏お浣庡垎鍚?
聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)
聽(tīng)聽(tīng)聽(tīng)聽(tīng)Unix閮ㄥ垎錛氫簡(jiǎn)瑙ｅ父鐢ㄥ懡浠わ紝綆鍗曠紪紼嬶紝緋葷粺綆＄悊涔嬬被(maybe澶ф涓?
聽(tīng)聽(tīng)聽(tīng)
聽(tīng)聽(tīng)聽(tīng)鑰佹澘甯冪疆鐨勪換鍔★細(xì)娣變俊鑰佹澘鐨勭溂鍏夛紝鎵浠ユ綔蹇?jī)瀹屾?br />聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)瀵嗙爜IBE錛屾垜鐨勮鏂囧晩
聽(tīng)聽(tīng)聽(tīng)
聽(tīng)聽(tīng)聽(tīng)聽(tīng)鑻辮錛氫負(fù)浜?jiǎn)鎵樹(shù)笟浣滃噯澶噡~~
===>鎵撳伐錛熼渶瑕佷粈涔堟垜瀛︿粈涔垀鍚戞潵涓轟簡(jiǎn)money涓嶉仐浣欏姏
聽(tīng)聽(tīng)聽(tīng)c++錛熼珮絳夋暟瀛﹀鏁欙紵
fighting...
聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)鐜板湪閮芥槸涓澶╁拰灝氫竴澶╅挓錛岀湅鍒頒粈涔堝浠涔堬紝鍞夛紝鐩茬洰鍟娿?..
]]>
1.C++鎴朖ava涓殑寮傚父澶勭悊鏈哄埗鐨勭畝鍗曞師鐞嗗拰搴旂敤銆?
聽(tīng)聽(tīng)聽(tīng)褰揓AVA紼嬪簭榪濆弽浜?jiǎn)JAVA鐨勮涔夎鍒欐椂錛孞AVA铏氭嫙鏈哄氨浼?xì)灏嗗彂鐢熺殑閿欒琛ńC轟負(fù)涓涓紓甯搞傝繚鍙嶈涔夎鍒欏寘鎷?縐嶆儏鍐點(diǎn)?br />聽(tīng)聽(tīng)聽(tīng)涓縐嶆槸JAVA綾誨簱鍐呯疆鐨勮涔夋鏌ャ備緥濡傛暟緇勪笅鏍囪秺鐣?浼?xì)寮曞彂IndexOutOfBoundsException;璁塊棶null鐨勫璞℃椂浼?xì)寮曞彂NullPointerException銆?br />聽(tīng)聽(tīng)聽(tīng)鍙︿竴縐嶆儏鍐靛氨鏄疛AVA鍏佽紼嬪簭鍛樻墿灞曡繖縐嶈涔夋鏌ワ紝紼嬪簭鍛樺彲浠ュ垱寤鴻嚜宸辯殑寮傚父錛屽茍鑷敱閫夋嫨鍦ㄤ綍鏃剁敤throw鍏抽敭瀛楀紩鍙戝紓甯搞傛墍鏈夌殑寮傚父閮芥槸java.lang.Thowable鐨勫瓙綾匯?/font>
2. Java鐨勬帴鍙ｅ拰C++鐨勮櫄綾葷殑鐩稿悓鍜屼笉鍚屽銆?
聽(tīng)聽(tīng)聽(tīng)鐢變簬Java涓嶆敮鎸佸緇ф壙錛岃屾湁鍙兘鏌愪釜綾繪垨瀵硅薄瑕佷嬌鐢ㄥ垎鍒湪鍑犱釜綾繪垨瀵硅薄閲岄潰鐨勬柟娉曟垨灞炴э紝鐜版湁鐨勫崟緇ф壙鏈哄埗灝變笉鑳芥弧瓚寵姹傘備笌緇ф壙鐩告瘮錛屾帴鍙ｆ湁鏇撮珮鐨勭伒媧繪э紝鍥犱負(fù)鎺ュ彛涓病鏈変換浣曞疄鐜頒唬鐮併傚綋涓涓被瀹炵幇浜?jiǎn)鎺ュ彛浠ュ悗锛岃绫昏瀹炵幇鎺ュ彛閲岄潰鎵鏈夌殑鏂規(guī)硶鍜屽睘鎬э紝騫朵笖鎺ュ彛閲岄潰鐨勫睘鎬у湪榛樿鐘舵佷笅闈㈤兘鏄痯ublic static,鎵鏈夋柟娉曢粯璁ゆ儏鍐典笅鏄痯ublic.涓涓被鍙互瀹炵幇澶氫釜鎺ュ彛銆?
3. 鍨冨溇鍥炴敹鐨勪紭鐐瑰拰鍘熺悊銆傚茍鑰冭檻2縐嶅洖鏀舵満鍒躲?
聽(tīng)聽(tīng)聽(tīng)Java璇█涓竴涓樉钁楃殑鐗圭偣灝辨槸寮曞叆浜?jiǎn)鍨冨湋譀炴敹鏈哄堄灱屼娇c++紼嬪簭鍛樻渶澶寸柤鐨勫唴瀛樼鐞嗙殑闂榪庡垉鑰岃В錛屽畠浣垮緱Java紼嬪簭鍛樺湪緙栧啓紼嬪簭鐨勬椂鍊欎笉鍐嶉渶瑕佽冭檻鍐呭瓨綆＄悊銆傜敱浜庢湁涓瀮鍦懼洖鏀舵満鍒訛紝Java涓殑瀵硅薄涓嶅啀鏈夆滀綔鐢ㄥ煙鈥濈殑姒傚康錛屽彧鏈夊璞＄殑寮曠敤鎵嶆湁鈥滀綔鐢ㄥ煙鈥濄傚瀮鍦懼洖鏀跺彲浠ユ湁鏁堢殑闃叉鍐呭瓨娉勯湶錛屾湁鏁堢殑浣跨敤鍙互浣跨敤鐨勫唴瀛樸傚瀮鍦懼洖鏀跺櫒閫氬父鏄綔涓轟竴涓崟鐙殑浣庣駭鍒殑綰跨▼榪愯錛屼笉鍙鐭ョ殑鎯呭喌涓嬪鍐呭瓨鍫嗕腑宸茬粡姝諱骸鐨勬垨鑰呴暱鏃墮棿娌℃湁浣跨敤鐨勫璞¤繘琛屾竻妤氬拰鍥炴敹錛岀▼搴忓憳?shù)笉鑳藉疄鏃剁殑璋冪敤鍨冨湋譀炴敹鍣ㄥ?guī)煇涓璞℃垨鎵鏈夊璞¤繘琛屽瀮鍦懼洖鏀躲傚洖鏀舵満鍒舵湁鍒嗕唬澶嶅埗鍨冨溇鍥炴敹鍜屾爣璁板瀮鍦懼洖鏀訛紝澧為噺鍨冨溇鍥炴敹銆?
4. 璇瘋鍑轟綘鎵鐭ラ亾鐨勭嚎紼嬪悓姝ョ殑鏂規(guī)硶銆?
wait():浣夸竴涓嚎紼嬪浜庣瓑寰呯姸鎬侊紝騫朵笖閲婃斁鎵鎸佹湁鐨勫璞＄殑lock銆?
sleep():浣夸竴涓鍦ㄨ繍琛岀殑綰跨▼澶勪簬鐫＄湢鐘舵侊紝鏄竴涓潤(rùn)鎬佹柟娉曪紝璋冪敤姝ゆ柟娉曡鎹曟崏InterruptedException寮傚父銆?
notify():鍞ら啋涓涓浜庣瓑寰呯姸鎬佺殑綰跨▼錛屾敞鎰忕殑鏄湪璋冪敤姝ゆ柟娉曠殑鏃跺欙紝騫朵笉鑳界‘鍒囩殑鍞ら啋鏌愪竴涓瓑寰呯姸鎬佺殑綰跨▼錛岃屾槸鐢盝VM紜畾鍞ら啋鍝釜綰跨▼錛岃屼笖涓嶆槸鎸変紭鍏堢駭銆?
Allnotity():鍞ら啋鎵鏈夊鍏ョ瓑寰呯姸鎬佺殑綰跨▼錛屾敞鎰忓茍涓嶆槸緇欐墍鏈夊敜閱掔嚎紼嬩竴涓璞＄殑閿侊紝鑰屾槸璁╁畠浠珵浜夈?
5. 璇瘋涓璁叉瀽鏋勫嚱鏁板拰铏氬嚱鏁扮殑鐢ㄦ硶鍜屼綔鐢ㄣ?
6. Error涓嶦xception鏈変粈涔堝尯鍒紵
Error琛ㄧず緋葷粺綰х殑閿欒鍜岀▼搴忎笉蹇呭鐞嗙殑寮傚父錛?
Exception琛ㄧず闇瑕佹崟鎹夋垨鑰呴渶瑕佺▼搴忚繘琛屽鐞嗙殑寮傚父銆?
7. 鍦╦ava涓竴涓被琚０鏄庝負(fù)final綾誨瀷錛岃〃紺轟簡(jiǎn)浠涔堟剰鎬濓紵
琛ㄧず璇ョ被涓嶈兘琚戶(hù)鎵匡紝鏄《綰х被銆?
8. 鎻忚堪涓涓嬩綘鏈甯哥敤鐨勭紪紼嬮鏍箋?
9. heap鍜宻tack鏈変粈涔堝尯鍒?
鏍堟槸涓縐嶇嚎褰㈤泦鍚堬紝鍏舵坊鍔犲拰鍒犻櫎鍏冪礌鐨勬搷浣滃簲鍦ㄥ悓涓孌靛畬鎴愩傛爤鎸夌収鍚庤繘鍏堝嚭鐨勬柟寮忚繘琛屽鐞嗐?
鍫嗘槸鏍堢殑涓涓粍鎴愬厓绱?
10. 濡傛灉緋葷粺瑕佷嬌鐢ㄨ秴澶ф暣鏁幫紙瓚呰繃long闀垮害鑼冨洿錛夛紝璇蜂綘璁捐涓涓暟鎹粨鏋勬潵瀛樺偍榪欑瓚呭ぇ鍨嬫暟瀛椾互鍙?qiáng)璁捐涓縐嶇畻娉曟潵瀹炵幇瓚呭ぇ鏁存暟鍔犳硶榪愮畻錛夈?
public class BigInt()
{
int[] ArrOne = new ArrOne[1000];
String intString="";
public int[] Arr(String s)
{
intString = s;
for(int i=0;i<ArrOne.leght;i++)
{
11. 濡傛灉瑕佽璁′竴涓浘褰㈢郴緇燂紝璇蜂綘璁捐鍩烘湰鐨勫浘褰㈠厓浠?Point,Line,Rectangle,Triangle)鐨勭畝鍗曞疄鐜?
12錛岃皥璋坒inal, finally, finalize鐨勫尯鍒?
銆銆final鈥斾慨楗扮錛堝叧閿瓧錛夊鏋滀竴涓被琚０鏄庝負(fù)final錛屾剰鍛崇潃瀹冧笉鑳藉啀媧劇敓鍑烘柊鐨勫瓙綾伙紝涓嶈兘浣滀負(fù)鐖剁被琚戶(hù)鎵褲傚洜姝や竴涓被涓嶈兘鏃㈣澹版槑涓?abstract鐨勶紝鍙堣澹版槑涓篺inal鐨勩傚皢鍙橀噺鎴栨柟娉曞０鏄庝負(fù)final錛屽彲浠ヤ繚璇佸畠浠湪浣跨敤涓笉琚敼鍙樸傝澹版槑涓篺inal鐨勫彉閲忓繀欏誨湪澹版槑鏃剁粰瀹氬垵鍊鹼紝鑰屽湪浠ュ悗鐨勫紩鐢ㄤ腑鍙兘璇誨彇錛屼笉鍙慨鏀廣傝澹版槑涓篺inal鐨勬柟娉曚篃鍚屾牱鍙兘浣跨敤錛屼笉鑳介噸杞姐?
銆銆finally鈥斿啀寮傚父澶勭悊鏃舵彁渚?finally 鍧楁潵鎵ц浠諱綍娓呴櫎鎿嶄綔銆傚鏋滄姏鍑轟竴涓紓甯革紝閭ｄ箞鐩稿尮閰嶇殑 catch 瀛愬彞灝變細(xì)鎵ц錛岀劧鍚庢帶鍒跺氨浼?xì)杩涘?finally 鍧楋紙濡傛灉鏈夌殑璇濓級(jí)銆?
銆銆finalize鈥旀柟娉曞悕銆侸ava 鎶鏈厑璁鎬嬌鐢?finalize() 鏂規(guī)硶鍦ㄥ瀮鍦炬敹闆嗗櫒灝嗗璞′粠鍐呭瓨?shù)腑娓呴櫎鍑哄幹M箣鍓嶅仛蹇呰鐨勬竻鐞嗗伐浣溿傝繖涓柟娉曟槸鐢卞瀮鍦炬敹闆嗗櫒鍦ㄧ‘瀹氳繖涓璞℃病鏈夎寮曠敤鏃跺榪欎釜瀵硅薄璋冪敤鐨勩傚畠鏄湪 Object 綾諱腑瀹氫箟鐨勶紝鍥犳鎵鏈夌殑綾婚兘緇ф壙浜?jiǎn)瀹冦傚瓙綾昏鐩?finalize() 鏂規(guī)硶浠ユ暣鐞嗙郴緇熻祫婧愭垨鑰呮墽琛屽叾浠栨竻鐞嗗伐浣溿俧inalize() 鏂規(guī)硶鏄湪鍨冨溇鏀墮泦鍣ㄥ垹闄ゅ璞′箣鍓嶅榪欎釜瀵硅薄璋冪敤鐨勩?
13錛孉nonymous Inner Class (鍖垮悕鍐呴儴綾? 鏄惁鍙互extends(緇ф壙)鍏跺畠綾伙紝鏄惁鍙互implements(瀹炵幇)interface(鎺ュ彛)?
銆銆鍖垮悕鐨勫唴閮ㄧ被鏄病鏈夊悕瀛楃殑鍐呴儴綾匯備笉鑳絜xtends(緇ф壙) 鍏跺畠綾伙紝浣嗕竴涓唴閮ㄧ被鍙互浣滀負(fù)涓涓帴鍙ｏ紝鐢卞彟涓涓唴閮ㄧ被瀹炵幇銆?
14錛孲tatic Nested Class 鍜?Inner Class鐨勪笉鍚岋紝璇村緱瓚婂瓚婂ソ(闈㈣瘯棰樻湁鐨勫緢絎肩粺)銆?
銆銆Nested Class 錛堜竴鑸槸C++鐨勮娉曪級(jí)錛孖nner Class (涓鑸槸JAVA鐨勮娉?銆侸ava鍐呴儴綾諱笌C++宓屽綾繪渶澶х殑涓嶅悓灝卞湪浜庢槸鍚︽湁鎸囧悜澶栭儴鐨勫紩鐢ㄤ笂銆傚叿浣撳彲瑙乭ttp: //www.frontfree.net/articles/services/view.asp?id=704&page=1
銆銆娉細(xì) 闈?rùn)鎬佸唴閮ㄧ被錛圛nner Class錛夋剰鍛崇潃1鍒涘緩涓涓猻tatic鍐呴儴綾葷殑瀵硅薄錛屼笉闇瑕佷竴涓閮ㄧ被瀵硅薄錛?涓嶈兘浠庝竴涓猻tatic鍐呴儴綾葷殑涓涓璞¤闂竴涓閮ㄧ被瀵硅薄
絎洓錛?amp;鍜?amp;&鐨勫尯鍒?
銆銆&鏄綅榪愮畻絎︺?amp;&鏄竷?yōu)當(dāng)閫昏緫榪愮畻絎︺?
15錛孒ashMap鍜孒ashtable鐨勫尯鍒?
銆銆閮藉睘浜嶮ap鎺ュ彛鐨勭被錛屽疄鐜頒簡(jiǎn)灝嗘儫涓閿槧灝勫埌鐗瑰畾鐨勫間笂銆?
銆銆HashMap 綾繪病鏈夊垎綾繪垨鑰呮帓搴忋傚畠鍏佽涓涓?null 閿拰澶氫釜 null 鍊箋?
銆銆Hashtable 綾諱技浜?HashMap錛屼絾鏄笉鍏佽 null 閿拰 null 鍊箋傚畠涔熸瘮 HashMap 鎱紝鍥犱負(fù)瀹冩槸鍚屾鐨勩?
16錛孋ollection 鍜?Collections鐨勫尯鍒?
銆銆Collections鏄釜java.util涓嬬殑綾伙紝瀹冨寘鍚湁鍚勭鏈夊叧闆嗗悎鎿嶄綔鐨勯潤(rùn)鎬佹柟娉曘?
銆銆Collection鏄釜java.util涓嬬殑鎺ュ彛錛屽畠鏄悇縐嶉泦鍚堢粨鏋勭殑鐖舵帴鍙ｃ?
17錛屼粈涔堟椂鍊欑敤assert銆?
銆銆鏂█鏄竴涓寘鍚竷?yōu)當(dāng)琛ㄨ緫旨忕殑璇彞锛屽湪鎵ц杩欎釜璇彞鏃跺亣瀹氳琛ㄨ緫旨忎?true銆傚鏋滆〃杈懼紡璁＄畻涓?false錛岄偅涔堢郴緇熶細(xì)鎶ュ憡涓涓?Assertionerror銆傚畠鐢ㄤ簬璋冭瘯鐩殑錛?
assert(a > 0); // throws an Assertionerror if a <= 0
鏂█鍙互鏈変袱縐嶅艦寮忥細(xì)
assert Expression1 ;
assert Expression1 : Expression2 ;
銆銆Expression1 搴旇鎬繪槸浜х敓涓涓竷?yōu)當(dāng)鍊箋?
銆銆Expression2 鍙互鏄緱鍑轟竴涓肩殑浠繪剰琛ㄨ揪寮忋傝繖涓肩敤浜庣敓鎴愭樉紺烘洿澶氳皟璇曚俊鎭殑 String 娑堟伅銆?
銆銆鏂█鍦ㄩ粯璁ゆ儏鍐典笅鏄鐢ㄧ殑銆傝鍦ㄧ紪璇戞椂鍚敤鏂█錛岄渶瑕佷嬌鐢?source 1.4 鏍囪錛?
銆銆javac -source 1.4 Test.java
銆銆瑕佸湪榪愯鏃跺惎鐢ㄦ柇璦錛屽彲浣跨敤 -enableassertions 鎴栬?-ea 鏍囪銆?
銆銆瑕佸湪榪愯鏃墮夋嫨紱佺敤鏂█錛屽彲浣跨敤 -da 鎴栬?-disableassertions 鏍囪銆?
銆銆瑕佺郴緇熺被涓惎鐢ㄦ柇璦錛屽彲浣跨敤 -esa 鎴栬?-dsa 鏍囪銆傝繕鍙互鍦ㄥ寘鐨勫熀紜涓婂惎鐢ㄦ垨鑰呯鐢ㄦ柇璦銆?
銆銆鍙互鍦ㄩ璁℃甯告儏鍐典笅涓嶄細(xì)鍒拌揪鐨勪換浣曚綅緗笂鏀劇疆鏂█銆傛柇璦鍙互鐢ㄤ簬楠岃瘉浼犻掔粰縐佹湁鏂規(guī)硶鐨勫弬鏁般備笉榪囷紝鏂█涓嶅簲璇ョ敤浜庨獙璇佷紶閫掔粰鍏湁鏂規(guī)硶鐨勫弬鏁幫紝鍥犱負(fù)涓嶇鏄惁鍚敤浜?jiǎn)鏂a錛屽叕鏈夋柟娉曢兘蹇呴』媯(gè)鏌ュ叾鍙傛暟銆備笉榪囷紝鏃㈠彲浠ュ湪鍏湁鏂規(guī)硶涓紝涔熷彲浠ュ湪闈炲叕鏈夋柟娉曚腑鍒╃敤鏂█嫻嬭瘯鍚庣疆鏉′歡銆傚彟澶栵紝鏂█涓嶅簲璇ヤ互浠諱綍鏂瑰紡鏀瑰彉紼嬪簭鐨勭姸鎬併?
18錛孏C鏄粈涔? 涓轟粈涔堣鏈塆C? (鍩虹)銆?
銆銆GC鏄瀮鍦炬敹闆嗗櫒銆侸ava 紼嬪簭鍛樹(shù)笉鐢ㄦ媴蹇?jī)鍐呭瓨绠＄悊锛屽洜湄?fù)鍨冨溇鏀墮泦鍣ㄤ細(xì)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(guī)硶涔嬩竴錛?
System.gc()
Runtime.getRuntime().gc()
19錛孲tring s = new String("xyz");鍒涘緩浜?jiǎn)鍑犱釜String Object?
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?
20錛孧ath.round(11.5)絳夋柤澶氬皯? Math.round(-11.5)絳夋柤澶氬皯?
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;
21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?
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?
22錛宻leep() 鍜?wait() 鏈変粈涔堝尯鍒? 鎼炵嚎紼嬬殑鏈鐖?
銆銆sleep()鏂規(guī)硶鏄嬌綰跨▼鍋滄涓孌墊椂闂寸殑鏂規(guī)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(chóng)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(fù)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 (b)姝ｅ湪榪愯鐨勭嚎紼嬪洜涓哄叾瀹冨師鍥犺岄樆濉炪?
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?xì)鏆傚仠鎵ц锛岃璋冨璞q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?
23錛孞ava鏈夋病鏈塯oto?
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?
24錛屾暟緇勬湁娌℃湁length()榪欎釜鏂規(guī)硶? String鏈夋病鏈塴ength()榪欎釜鏂規(guī)硶錛?
銆銆鏁扮粍娌℃湁length()榪欎釜鏂規(guī)硶錛屾湁length鐨勫睘鎬с?
銆銆String鏈夋湁length()榪欎釜鏂規(guī)硶銆?
25錛孫verload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?
銆銆鏂規(guī)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(guī)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(guī)硶琚噸鍐?(Overriding)銆傚瓙綾葷殑瀵硅薄浣跨敤榪欎釜鏂規(guī)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(jiǎn)銆傚鏋滃湪涓涓被涓畾涔変簡(jiǎn)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(fù)鏂規(guī)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?
26錛孲et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?
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(guī)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?
銆銆equals()鍜?=鏂規(guī)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(fù)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?
27錛岀粰鎴戜竴涓綘鏈甯歌鍒扮殑runtime exception銆?
ArithmeticException, ArrayStoreException, BufferOverflowException, BufferUnderflowException, CannotRedoException, CannotUndoException, ClassCastException, CMMException, ConcurrentModificationException, DOMException, EmptyStackException, IllegalArgumentException, IllegalMonitorStateException, IllegalPathStateException, IllegalStateException,
ImagingOpException, IndexOutOfBoundsException, MissingResourceException, NegativeArraySizeException, NoSuchElementException, NullPointerException, ProfileDataException, ProviderException, RasterFORMatException, SecurityException, SystemException, UndeclaredThrowableException, UnmodifiableSetException, UnsupportedOperationException
28錛宔rror鍜宔xception鏈変粈涔堝尯鍒?
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(fēng)殑鎯呭喌銆?
銆銆exception 琛ㄧず涓縐嶈璁℃垨瀹炵幇闂銆備篃灝辨槸璇達(dá)紝瀹冭〃紺哄鏋滅▼搴忚繍琛屾甯革紝浠庝笉浼?xì)鍙戠敓鐨勬儏鍐点?
29錛孡ist, Set, Map鏄惁緇ф壙鑷狢ollection鎺ュ彛?
List錛孲et鏄?
Map涓嶆槸
30錛宎bstract class鍜宨nterface鏈変粈涔堝尯鍒?
銆銆澹版槑鏂規(guī)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(fù)璇ョ被澹版槑鏂規(guī)硶錛屼絾涓嶈兘鍦ㄨ綾諱腑瀹炵幇璇ョ被鐨勬儏鍐點(diǎn)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?rùn)鎬佹柟娉曘侫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(fù)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(fù)鐨勫叾瀹冪被鍙互鍦ㄧ被涓疄鐜拌繖浜涙柟娉曘?
銆銆鎺ュ彛錛坕nterface錛夋槸鎶借薄綾葷殑鍙樹(shù)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(jiǎn)璇ュ疄鐜扮被涓嶈兘浠庢帴鍙ｅ畾涔変腑緇ф壙琛屼負(fù)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(guī)硶銆傜劧鍚庯紝瀹冨彲浠ュ湪瀹炵幇浜?jiǎn)璇ユ帴鍙ｇ殑绫荤殑鋼Q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(fù)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?jiǎn)鎺ュ彛銆?
31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?
銆銆閮戒笉鑳?
32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)?
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(hù)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?
33錛屽惎鍔ㄤ竴涓嚎紼嬫槸鐢╮un()榪樻槸start()?
銆銆鍚姩涓涓嚎紼嬫槸璋冪敤start()鏂規(guī)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(xì)绔嬪嵆榪愯銆俽un()鏂規(guī)硶鍙互浜х敓蹇呴』閫鍑虹殑鏍囧織鏉ュ仠姝竴涓嚎紼嬨?
34錛屾瀯閫犲櫒Constructor鏄惁鍙override?
銆銆鏋勯犲櫒Constructor涓嶈兘琚戶(hù)鎵匡紝鍥犳涓嶈兘閲嶅啓Overriding錛屼絾鍙互琚噸杞絆verloading銆?
35錛屾槸鍚﹀彲浠ョ戶(hù)鎵縎tring綾?
銆銆String綾繪槸final綾繪晠涓嶅彲浠ョ戶(hù)鎵褲?
36錛屽綋涓涓嚎紼嬭繘鍏ヤ竴涓璞＄殑涓涓猻ynchronized鏂規(guī)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?
銆銆涓嶈兘錛屼竴涓璞＄殑涓涓猻ynchronized鏂規(guī)硶鍙兘鐢變竴涓嚎紼嬭闂?
37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?xì)涓嶄細(xì)琚墽琛屽Q屼粈涔堟椂鍊欒鎵ц錛屽湪return鍓嶈繕鏄悗?
銆銆浼?xì)鎵ц锛屽湪return鍓嶆墽琛屻?
38錛岀紪紼嬮: 鐢ㄦ渶鏈夋晥鐜囩殑鏂規(guī)硶綆楀嚭2涔樹(shù)互8絳夋柤鍑?
銆銆鏈塁鑳屾櫙鐨勭▼搴忓憳鐗瑰埆鍠滄闂繖縐嶉棶棰樸?
銆銆2 << 3
39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?
銆銆涓嶅錛屾湁鐩稿悓鐨刪ash code銆?
40錛屽綋涓涓璞¤褰撲綔鍙傛暟浼犻掑埌涓涓柟娉曞悗錛屾鏂規(guī)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?
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(guī)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(xì)鏀瑰彉鐨勩?
41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?
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?
42錛岀紪紼嬮: 鍐欎竴涓猄ingleton鍑烘潵銆?
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?
銆銆涓鑸琒ingleton妯″紡閫氬父鏈夊嚑縐嶇褰㈠紡錛?
銆銆絎竴縐嶅艦寮忥細(xì)瀹氫箟涓涓被錛屽畠鐨勬瀯閫犲嚱鏁頒負(fù)private鐨勶紝瀹冩湁涓涓猻tatic鐨刾rivate鐨勮綾誨彉閲忥紝鍦ㄧ被鍒濆鍖栨椂瀹炰緥璇濓紝閫氳繃涓涓猵ublic鐨刧etInstance鏂規(guī)硶鑾峰彇瀵瑰畠鐨勫紩鐢?緇ц岃皟鐢ㄥ叾涓殑鏂規(guī)硶銆?
public class Singleton {
銆銆private Singleton(){}
銆銆//鍦ㄨ嚜宸卞唴閮ㄥ畾涔夎嚜宸變竴涓疄渚嬶紝鏄笉鏄緢濂囨紵
銆銆//娉ㄦ剰榪欐槸private 鍙緵鍐呴儴璋冪敤
銆銆private static Singleton instance = new Singleton();
銆銆//榪欓噷鎻愪緵浜?jiǎn)涓涓緵澶栭儴璁塊棶鏈琧lass鐨勯潤(rùn)鎬佹柟娉曪紝鍙互鐩存帴璁塊棶銆銆
銆銆public static Singleton getInstance() {
銆銆銆銆return instance; 銆銆
銆銆 }
}
銆銆絎簩縐嶅艦寮忥細(xì)
public class Singleton {
銆銆private static Singleton instance = null;
銆銆public static synchronized Singleton getInstance() {
銆銆//榪欎釜鏂規(guī)硶姣斾笂闈㈡湁鎵鏀硅繘錛屼笉鐢ㄦ瘡嬈￠兘榪涜鐢熸垚瀵硅薄錛屽彧鏄涓嬈°銆銆 銆
銆銆//浣跨敤鏃剁敓鎴愬疄渚嬶紝鎻愰珮?shù)簡(jiǎn)鏁堢巼锛?
銆銆if (instance==null)
銆銆銆銆instance錛漬ew Singleton();
return instance; 銆銆}
}
鍏朵粬褰㈠紡錛?
銆銆瀹氫箟涓涓被錛屽畠鐨勬瀯閫犲嚱鏁頒負(fù)private鐨勶紝鎵鏈夋柟娉曚負(fù)static鐨勩?
銆銆涓鑸涓虹涓縐嶅艦寮忚鏇村姞瀹夊叏浜?
銆銆Hashtable鍜孒ashMap
銆銆Hashtable緇ф壙鑷狣ictionary綾伙紝鑰孒ashMap鏄疛ava1.2寮曡繘鐨凪ap interface鐨勪竴涓疄鐜?
銆銆HashMap鍏佽灝唍ull浣滀負(fù)涓涓猠ntry鐨刱ey鎴栬卾alue錛岃孒ashtable涓嶅厑璁?
銆銆榪樻湁灝辨槸錛孒ashMap鎶奌ashtable鐨刢ontains鏂規(guī)硶鍘繪帀浜?jiǎn)锛屾斠?guī)垚containsvalue鍜宑ontainsKey銆傚洜涓篶ontains鏂規(guī)硶瀹規(guī)槗璁╀漢寮曡搗璇В銆?
銆銆鏈澶х殑涓嶅悓鏄紝Hashtable鐨勬柟娉曟槸Synchronize鐨勶紝鑰孒ashMap涓嶆槸錛屽湪
澶氫釜綰跨▼璁塊棶Hashtable鏃訛紝涓嶉渶瑕佽嚜宸變負(fù)瀹冪殑鏂規(guī)硶瀹炵幇鍚屾錛岃孒ashMap
灝卞繀欏諱負(fù)涔嬫彁渚涘鍚屾銆?
Hashtable鍜孒ashMap閲囩敤鐨刪ash/rehash綆楁硶閮藉ぇ姒備竴鏍鳳紝鎵浠ユц兘涓嶄細(xì)鏈夊緢澶х殑宸紓銆?
43.鎻忚堪涓涓婮VM鍔犺澆class鏂囦歡鐨勫師鐞嗘満鍒?
44.璇曚婦渚嬭鏄庝竴涓吀鍨嬬殑鍨冨溇鍥炴敹綆楁硶錛?
45.璇風(fēng)敤java鍐欎簩*鏍?wèi)绠楁硶锛屽疄鐜版氛d姞鏁版嵁褰㈡垚浜?鏍?wèi)鍔熻兘锛岒q朵互鍏堝簭鐨勬柟寮忔墦鍗板嚭鏉?
46.璇峰啓涓涓猨ava紼嬪簭瀹炵幇綰跨▼榪炴帴姹犲姛鑳斤紵
47.緇欏畾涓涓狢璇█鍑芥暟錛岃姹傚疄鐜板湪java綾諱腑榪涜璋冪敤銆?
48銆佺紪涓孌典唬鐮侊紝瀹炵幇鍦ㄦ帶鍒跺彴杈撳叆涓緇勬暟瀛楀悗錛屾帓搴忓悗鍦ㄦ帶鍒跺彴杈撳嚭錛?
49銆佸垪鍑烘煇鏂囦歡澶逛笅鐨勬墍鏈夋枃浠訛紱
50銆佽皟鐢ㄧ郴緇熷懡浠ゅ疄鐜板垹闄ゆ枃浠剁殑鎿嶄綔錛?
51銆佸疄鐜頒粠鏂囦歡涓竴嬈¤鍑轟竴涓瓧絎︾殑鎿嶄綔錛?
52銆佸垪鍑轟竴浜涙帶鍒舵祦紼嬬殑鏂規(guī)硶錛?
53銆佸綰跨▼鏈夊摢浜涚姸鎬侊紵
54銆佺紪鍐欎簡(jiǎn)涓涓湇鍔″櫒绔殑紼嬪簭瀹炵幇鍦ㄥ鎴風(fēng)杈撳叆瀛楃鐒跺悗鍦ㄦ帶鍒跺彴涓婃樉紺猴紝鐩村埌杈撳叆"END"涓烘錛岃浣犲啓鍑哄鎴風(fēng)鐨勭▼搴忥紱
55銆佷綔鐢ㄥ煙public,private,protected,浠ュ強(qiáng)涓嶅啓鏃剁殑鍖哄埆
絳旓細(xì)鍖哄埆濡備笅錛?
浣滅敤鍩?褰撳墠綾?鍚屼竴package 瀛愬瓩綾?鍏朵粬package
public 鈭?鈭?鈭?鈭?
protected 鈭?鈭?鈭?脳
friendly 鈭?鈭?脳 脳
private 鈭?脳 脳 脳
涓嶅啓鏃墮粯璁や負(fù)friendly
56銆丄rrayList鍜孷ector鐨勫尯鍒?HashMap鍜孒ashtable鐨勫尯鍒?
絳旓細(xì)灝盇rrayList涓嶸ector涓昏浠庝簩鏂歸潰鏉ヨ.
涓.鍚屾鎬?Vector鏄嚎紼嬪畨鍏ㄧ殑錛屼篃灝辨槸璇存槸鍚屾鐨勶紝鑰孉rrayList鏄嚎紼嬪簭涓嶅畨鍏ㄧ殑錛屼笉鏄悓姝ョ殑
浜?鏁版嵁澧為暱:褰撻渶瑕佸闀挎椂,Vector榛樿澧為暱涓哄師鏉ヤ竴鍩癸紝鑰孉rrayList鍗存槸鍘熸潵鐨勪竴鍗?
灝盚ashMap涓嶩ashTable涓昏浠庝笁鏂歸潰鏉ヨ銆?
涓.鍘嗗彶鍘熷洜:Hashtable鏄熀浜庨檲鏃х殑Dictionary綾葷殑錛孒ashMap鏄疛ava 1.2寮曡繘鐨凪ap鎺ュ彛鐨勪竴涓疄鐜?
浜?鍚屾鎬?Hashtable鏄嚎紼嬪畨鍏ㄧ殑錛屼篃灝辨槸璇存槸鍚屾鐨勶紝鑰孒ashMap鏄嚎紼嬪簭涓嶅畨鍏ㄧ殑錛屼笉鏄悓姝ョ殑
涓?鍊鹼細(xì)鍙湁HashMap鍙互璁╀綘灝嗙┖鍊間綔涓轟竴涓〃鐨勬潯鐩殑key鎴杤alue
57銆乧har鍨嬪彉閲忎腑鑳戒笉鑳藉瓨璐竴涓腑鏂囨眽瀛?涓轟粈涔?
絳旓細(xì)鏄兘澶熷畾涔夋垚涓轟竴涓腑鏂囩殑錛屽洜涓簀ava涓互unicode緙栫爜錛屼竴涓猚har鍗?6涓瓧鑺傦紝鎵浠ユ斁涓涓腑鏂囨槸娌￠棶棰樼殑
58銆佸綰跨▼鏈夊嚑縐嶅疄鐜版柟娉?閮芥槸浠涔?鍚屾鏈夊嚑縐嶅疄鐜版柟娉?閮芥槸浠涔?
絳旓細(xì)澶氱嚎紼嬫湁涓ょ瀹炵幇鏂規(guī)硶錛屽垎鍒槸緇ф壙Thread綾諱笌瀹炵幇Runnable鎺ュ彛
鍚屾鐨勫疄鐜版柟闈㈡湁涓ょ錛屽垎鍒槸synchronized,wait涓巒otify
59銆佸瀮鍦懼洖鏀舵満鍒?濡備綍浼樺寲紼嬪簭?
甯屾湜澶у琛ヤ笂錛岃阿璋?
60銆乫loat鍨媐loat f=3.4鏄惁姝ｇ‘?
絳?涓嶆紜傜簿搴︿笉鍑嗙‘,搴旇鐢ㄥ己鍒剁被鍨嬭漿鎹紝濡備笅鎵紺猴細(xì)float f=(float)3.4
61銆佷粙緇岼AVA涓殑Collection FrameWork(鍖呮嫭濡備綍鍐欒嚜宸辯殑鏁版嵁緇撴瀯)?
絳旓細(xì)Collection FrameWork濡備笅錛?
Collection
鈹淟ist
鈹傗敎LinkedList
鈹傗敎ArrayList
鈹傗敂Vector
鈹傘鈹擲tack
鈹擲et
Map
鈹淗ashtable
鈹淗ashMap
鈹擶eakHashMap
Collection鏄渶鍩烘湰鐨勯泦鍚堟帴鍙ｏ紝涓涓狢ollection浠ｈ〃涓緇凮bject錛屽嵆Collection鐨勫厓绱狅紙Elements錛?
Map鎻愪緵key鍒皏alue鐨勬槧灝?
62銆丣ava涓紓甯稿鐞嗘満鍒訛紝浜嬩歡鏈哄埗錛?
聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)JAVA涓殑澶氬艦涓庣戶(hù)鎵匡紵
63銆佹娊璞＄被涓庢帴鍙ｏ紵
絳旓細(xì)鎶借薄綾諱笌鎺ュ彛閮界敤浜庢娊璞★紝浣嗘槸鎶借薄綾?JAVA涓?鍙互鏈夎嚜宸辯殑閮ㄥ垎瀹炵幇錛岃屾帴鍙ｅ垯瀹屽叏鏄竴涓爣璇?鍚屾椂鏈夊閲嶇戶(hù)鎵跨殑鍔熻兘)銆?br />
]]>
<HEAD>
<TITLE> Drag_126_like </TITLE>
</HEAD>
<BODY>
<style>
body,td,a {font-size:9pt;color:black}
.none{border:black 1px solid;background:D9D9D9;padding-top:2}
.over {border:black 1px solid;background:707888;color:white;padding-top:2}
</style>
<!--css:
鍔犺澆css鏍峰紡鐨勬柟寮忥細(xì)
聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)head鍐呭紩鐢?<style type = "text/css"></stylt>
聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)body鍐呭紩鐢?<div style = "">...</div>
聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)鏂囦歡澶栧紩鐢?Head鍐? <link rel = stylesheet href = "mystyle.css" type = "text/css">
聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng) <style type = "text/css"> @import url(mystyle.css); </style>
聽(tīng)
css涓庢爣璁板搴旂殑鏂瑰紡錛?br />聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)鏍囪閫夋嫨絎?濡傦細(xì) body,td,a {font-size:9pt;color:black}
聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)綾婚夋嫨絎?鍦╤tml鏍囪涓嬌鐢╟lass= "classname"錛岀劧鍚庡湪style鏍囪鍐呯敤".classname",濡偮?br />聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng).none{border:black 1px solid;background:D9D9D9;padding-top:2}
聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)I(yíng)D閫夋嫨絎?html鍐呯敤"ID = SZG", style 鍐呯敤#SZG
-->
<body onmousemove="move()">
<div style="position:absolute; left: 100; top: 100; width: 1; height: 1;cursor: hand" ID=plane onmousedown="down=true;divleft=event.clientX-parseInt(plane.style.left);divtop=event.clientY-parseInt(plane.style.top)"onmouseup="down=false">
<div align=center style="position:absolute; left:150px; top:33px; width:100px; height:19px; z-index:1;color:white;background:707888;
cursor:move"onmouseover='stopTimerline();menuItemIn()' onmouseout='runTimerline()'class="none">
鍙嫋鍔ㄧ殑鑿滃崟</div>
<div align=center id="item11" style="position:absolute; left:50px; top:55px; width:99px; height:19px;
z-index:2; filter:alpha(opacity=0)"class="none" onmouseover="this.className='over';stopTimerline()"
onmouseout="this.className='none';runTimerline()" >鑿滃崟欏逛竴</div>
<!--榪欓噷榪樿璁劇疆榧犳爣濡傛灉紱誨紑鍙嫋鍔ㄨ彍鍗曪紝over item11絳夋椂錛屽繀欏籹topTimerline()
聽(tīng)this.className='over'璁劇疆<div class = "over"
-->
<div align=center id="item12" style="position:absolute; left:250px; top:77px; width:99px; height:19px; z-index:3;filter:alpha(opacity=0)"class=none onmouseover="this.className='over';stopTimerline()"
onmouseout="this.className='none';runTimerline()">鑿滃崟欏逛簩</div>聽(tīng)
<div align=center id="item13" style="position:absolute; left:50px; top:99px; width:99px; height:19px;
z-index:4; filter:alpha(opacity=0)"class=none onmouseover="this.className='over';stopTimerline()"
onmouseout="this.className='none';runTimerline()">鑿滃崟欏逛笁</div>
<div align=center id="item14" style="position:absolute; left:250px; top:121px; width:99px; height:19px; z-index:5;filter:alpha(opacity=0)"class=none onmouseover="this.className='over';stopTimerline()"
onmouseout="this.className='none';runTimerline()">鑿滃崟欏瑰洓</div>
<div align=center id="item15" style="position:absolute; left:50px; top:143px; width:99px; height:19px;
z-index:6; filter:alpha(opacity=0)"class=none onmouseover="this.className='over';stopTimerline()"
onmouseout="this.className='none';runTimerline()">鑿滃崟欏逛簲</div>
</div>
<script>
//鍔ㄧ敾鑿滃崟
/*javascript
聽(tīng)瑙ｉ噴鍨嬭璦錛屾祻瑙堝櫒杈硅В閲婅竟鎵ц
聽(tīng)瀹氫箟鍙橀噺鏃跺欏彧鏈変竴涓叧閿瓧var聽(tīng)
聽(tīng)聽(tīng)javascript鐨勫彉閲忔槸寮卞彉閲忥紝涓嶇粡榪囧０鏄庡氨鍙互浣跨敤錛屽緩璁厛鐢╲ar澹版槑==>java鏄己鍙橀噺璇█
聽(tīng)聽(tīng)javascript璇彞鍚庨潰鍙互鍔犲垎鍙鳳紝涔熷彲浠ヤ笉鍔犮傚緩璁姞
聽(tīng)javascript鐨勪簨浠訛細(xì)瓚呯駭榪炴帴浜嬩歡錛屾祻瑙堝櫒浜嬩歡錛岀晫闈簨浠訛紙click, mouseout,mouseover,mousedown錛?br />聽(tīng)聽(tīng)濡俹nmouseover="this.className='over';stopTimerline()"
*/
var currTimerlinePoint=0
var totalTimerlineFrames=2
var timerlineTimer
var leftLine = 50
var timerIn
var timerOut
var timerlineArray = new Array()
timerlineArray[0]=''
timerlineArray[1]='menuItemOut()'
/*setTimeout & clearTimeout
聽(tīng)鍦↗avascript緇欎簨浠跺畾鏃躲傚埄鐢╯etTimeout(), 鎸囦護(hù)鍙互鍦ㄦ湭鏉ョ殑鏌愪釜鎸囧畾鏃墮棿鎵ц鐗瑰畾鎸囦護(hù)銆?br />聽(tīng)濡傛灉浣犳敼鍙樹(shù)富鎰忥紝浣犲彲浠ョ敤clearTimeout()鍙栨秷setTimeout鐨勫畾鏃?
*/
function runTimerline(){聽(tīng)//onmouseout
聽(tīng)window.timerlineTimer = setTimeout('menuItemOut()',500)
//榪欓噷鐨勬椂闂翠笉鑳藉お鐭紝鍚﹀垯鐢ㄦ埛item錛岃繘鍏tem11絳夎彍鍗曟椂灝眒enuItemOut浜?/font>
}
function stopTimerline(){聽(tīng)//onmouserover
聽(tīng)clearTimeout(window.timerlineTimer)
}
function menuItemIn(){聽(tīng)聽(tīng)//onmouseover
/*
聽(tīng)html.div涓敤浜?jiǎn)涓妧宸э紝灝唅tem11鏀懼湪left澶勶紝鍐嶈緗甪ilters.alpha.opacity=0錛屽姝ょ敤鎴峰氨鐪嬩笉瑙侊紝
榧犳爣縐諱笂鍘繪椂錛岀粍浠跺嚭鐜幫紝浠庤繙澶勬潵鐨勬晥鏋?br />*/
聽(tīng)if( leftLine != 150){
聽(tīng)聽(tīng)item11.style.pixelLeft += 20; item11.filters.alpha.opacity += 20
聽(tīng)聽(tīng)item12.style.pixelLeft -= 20; item12.filters.alpha.opacity += 20
聽(tīng)聽(tīng)item13.style.pixelLeft += 20; item13.filters.alpha.opacity += 20
聽(tīng)聽(tīng)item14.style.pixelLeft -= 20; item14.filters.alpha.opacity += 20
聽(tīng)聽(tīng)item15.style.pixelLeft += 20; item15.filters.alpha.opacity += 20
聽(tīng)聽(tīng)leftLine += 20
聽(tīng)}
聽(tīng)else{
聽(tīng)聽(tīng)clearTimeout(window.timerIn)
聽(tīng)聽(tīng)return false
聽(tīng)}
聽(tīng)timerIn=window.setTimeout('menuItemIn()',1)
//鍒╃敤setTimeout鏉ヤ笉鏂噸澶嶆墽琛宮enuItemIn錛屽惁鍒欏彧鎵ц涓嬈°傜洿鍒發(fā)eftLine錛?50===>鐢ㄥ驚鐜潵鍋氾紵
/*
鍌?cè)潥勭敤弩@鐜瘯鍥捐В鍐籌紝絎竴縐嶆墽琛岀殑澶揩錛岀湅涓嶅嚭寰簭娓愯繘錛涚浜岀澶參.....
do{
聽(tīng)item11.style.pixelLeft += 20; item11.filters.alpha.opacity += 20
聽(tīng)item12.style.pixelLeft -= 20; item12.filters.alpha.opacity += 20
聽(tīng)item13.style.pixelLeft += 20; item13.filters.alpha.opacity += 20
聽(tīng)item14.style.pixelLeft -= 20; item14.filters.alpha.opacity += 20
聽(tīng)item15.style.pixelLeft += 20; item15.filters.alpha.opacity += 20
聽(tīng)leftLine += 20
}while(leftLine!=150)
for (i = 0;i<10,leftLine!=150 ;i++){
聽(tīng)if(i==2||i==4||i==6||i==8){
聽(tīng)item11.style.pixelLeft += 20; item11.filters.alpha.opacity += 20
聽(tīng)item12.style.pixelLeft -= 20; item12.filters.alpha.opacity += 20
聽(tīng)item13.style.pixelLeft += 20; item13.filters.alpha.opacity += 20
聽(tīng)item14.style.pixelLeft -= 20; item14.filters.alpha.opacity += 20
聽(tīng)item15.style.pixelLeft += 20; item15.filters.alpha.opacity += 20
聽(tīng)leftLine += 20
聽(tīng)}
}
*/
}
function menuItemOut(){
聽(tīng)clearTimeout(window.timerIn)
聽(tīng)if (leftLine != 50){
聽(tīng)聽(tīng)item11.style.pixelLeft -= 20; item11.filters.alpha.opacity -= 20
聽(tīng)聽(tīng)item12.style.pixelLeft += 20; item12.filters.alpha.opacity -= 20
聽(tīng)聽(tīng)item13.style.pixelLeft -= 20; item13.filters.alpha.opacity -= 20
聽(tīng)聽(tīng)item14.style.pixelLeft += 20; item14.filters.alpha.opacity -= 20
聽(tīng)聽(tīng)item15.style.pixelLeft -= 20; item15.filters.alpha.opacity -= 20
聽(tīng)聽(tīng)leftLine -= 20
聽(tīng)}
聽(tīng)else{
聽(tīng)聽(tīng)clearTimeout(window.timerOut)
聽(tīng)聽(tīng)return false;
聽(tīng)}
聽(tīng)timerOut=window.setTimeout("menuItemOut()",1)
}
//縐誨姩灞?=============>涓嶆噦...
var over=false,down=false,divleft,divtop;
function move(){
聽(tīng)if(down){
聽(tīng)聽(tīng)plane.style.left=event.clientX-divleft;
聽(tīng)聽(tīng)plane.style.top=event.clientY-divtop;
聽(tīng)}
}
</script>
</BODY>
</HTML>
]]>
鎴戠殑鐢?shù)鑴慉鍜屾湇鍔″櫒鐢?shù)鑴態(tài)鍦ㄥ悓涓涓猻witch搴曚笅錛岀數(shù)鑴慉鏄痺indows錛孊鏄痩inux緋葷粺錛屾垜A鍙互pingB錛?br />B鍗翠笉鍙互pingA錛屼笉鐞嗚В涓?br />聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)鑰冭檻鏈変互涓嬪嚑涓棶棰橈細(xì)1錛宭inux緋葷粺鐨刾ing鏈嶅姟錛宼elnet涔嬬被鐨勬湇鍔¤紱佹帀浜?jiǎn)锛堟槸涓嶆槸杩欐牱灏眕ing涓嶈繘鏉ワ紵===>涓嶄細(xì)linux錛屾槑澶╁啀鎵炬壘鍚姩鐨勫懡浠ゅ惂錛?錛屾垜榪欒竟闃茬伀澧欓棶棰橈紙宸茬粡鍏抽棴錛岃繕鏄痯ing涓嶉氾級(jí)3錛屽弻緗戝崱錛堝鍙岀綉鍗″伐浣滄満鍒朵笉鎳傦紝浣嗚繕鏄嵏鎺変簡(jiǎn)涓涓級(jí)4錛岄噸鍚笅錛堝氨鏄幇鍦╞log鏃跺欎簡(jiǎn)錛屾噿寰楀啀鍘繪祴璇曡涓嶈浜?jiǎn)锛屽ソ鍍忎笉琛屽Q屾湰鍦伴兘ping涓嶉氾紝ping鑷繁閮戒笉琛岋級(jí)
聽(tīng)聽(tīng)聽(tīng)聽(tīng) delphi7涓嶇敤trace into 綆鐩村共涓嶄簡(jiǎn)浜嬫儏浜?jiǎn)銆備粖澶╁枆鍜欏彂鐐庯紝榪樻兂鐫鎴戣漿杞界殑Java闈㈣瘯棰橈紝涓鏉′笉浼?xì)锛屽攭锛屽熀纭閮侀椃涓?br />
璇烽珮鎵嬫寚鐐逛笅閭ｄ釜ping涓嶉氱殑闂鍟?..鎰熸縺涓?/p>
]]>