锘??xml version="1.0" encoding="utf-8" standalone="yes"?> //璇籖DF鐨勭▼搴?br />import com.hp.hpl.jena.rdf.model.*; public class read-rdf extends Object{ 聽聽聽 static final String inputFileName 聽聽聽 public static void main (Sring args[]){ 聽聽聽聽聽聽聽 try聽 { 聽聽聽聽聽聽聽聽聽聽 Model model = ModelFactory.createDefaultModel(); 聽聽聽聽聽聽聽聽聽聽 InputStream in = read-rdf.class 聽聽聽聽聽聽聽聽聽聽 if (in == null) { 聽聽聽聽聽聽聽聽聽聽 model.read(new InputStreamReader(in), ""); 聽聽聽聽聽聽聽聽聽聽 model.write(System.out); 聽聽聽聽聽聽聽 } public static void main (String args[]){ 聽聽聽聽聽聽聽 String programstype聽聽 = "Jena"; 聽聽聽聽聽聽聽聽聽聽聽 }
import java.io.*;
聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽 = "i'm-rdf-file.rdf";
聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽 .getClassLoader()
聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽 .getResourceAsStream(inputFileName);
聽聽聽聽聽聽聽聽聽聽聽聽聽聽 throw new IllegalArgumentException(
聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽 "file:" + inputFileName +"not found");
聽聽聽聽聽聽聽聽聽聽聽聽 }
聽聽聽 }
//鍐橰DF鐨勭▼搴?br />import com.hp.hpl.jena.rdf.model.*;
import java.io.*;
import com.hp.hpl.jena.xmloutput.*;
聽聽聽聽聽聽聽 String writername聽聽聽聽 = "xiaoxiao";
聽聽聽聽聽聽聽 String things聽聽聽聽聽聽聽聽 = "make the program";
聽聽聽聽聽聽聽 String task聽聽聽聽聽聽聽聽聽聽 = writername + " " + things;
聽聽聽聽
聽聽聽聽聽聽聽 try{
聽聽聽聽聽聽聽聽聽聽 Model model = ModelFactory.createDefaultModel()聽聽
聽聽聽聽聽聽聽聽聽
聽聽聽聽聽聽聽聽聽聽 Resource xiaoxiao
聽聽聽聽聽聽聽聽聽聽聽聽聽 = model.createResource(programstype)
聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽 .addProperty(TASKS, task)
聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽 model.createResource()
聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽聽 .addProterty(WRITER, writername)
聽聽聽聽聽聽聽聽聽聽聽聽 RDFWriter writer = model.getWriter();
聽聽聽聽聽聽聽聽聽聽聽聽 writer.write(model,System.out, null);
}
]]>
銆銆鐩墠Java涓昏搴旂敤浜庝腑闂翠歡鐨勫紑鍙?middleware)---澶勭悊瀹㈡埛鏈轟簬鏈嶅姟鍣ㄤ箣闂寸殑閫氫俊鎶鏈?鏃╂湡鐨勫疄璺佃瘉鏄?Java涓嶉傚悎pc搴旂敤紼嬪簭鐨勫紑鍙?鍏跺彂灞曢愭笎鍙樻垚鍦ㄥ紑鍙戞墜鎸佽澶?浜掕仈緗戜俊鎭珯,鍙婅濺杞借綆楁満鐨勫紑鍙?Java浜庡叾浠栬璦鎵涓嶅悓鐨勬槸紼嬪簭榪愯鏃舵彁渚涗簡騫沖彴鐨勭嫭绔嬫?縐拌鍙互鍦╳indows,solaris,linux鍏朵粬鎿嶄綔緋葷粺涓婁嬌鐢ㄥ畬鍏ㄧ浉鍚岀殑浠g爜.Java鐨勮娉曚笌C++璇硶綾諱技,C++/C紼嬪簭鍛樺緢瀹規槗鎺屾彙,鑰屼笖Java鏄畬鍏ㄧ殑褰誨簳鐨勯潰鍚戝璞$殑,鍏朵腑鎻愬嚭浜嗗緢濂界殑GC(Garbage Collector)鍨冨溇澶勭悊鏈哄埗,闃叉鍐呭瓨婧㈠嚭.
銆銆Java鐨勭櫧鐨功涓烘垜浠彁鍑轟簡Java璇█鐨?1涓叧閿壒鎬?
銆銆(1)Easy:Java鐨勮娉曟瘮C++鐨勭浉瀵圭畝鍗?鍙︿竴涓柟闈㈠氨鏄疛ava鑳戒嬌杞歡鍦ㄥ緢灝忕殑鏈哄櫒涓婅繍琛?鍩虹瑙i噴鍏跺拰綾誨簱鐨勬敮鎸佺殑澶у皬綰︿負40kb,澧炲姞鍩烘湰鐨勬爣鍑嗗簱鍜岀嚎紼嬫敮鎸佺殑鍐呭瓨闇瑕佸鍔?25kb.
銆銆(2)鍒嗗竷寮?Java甯︽湁寰堝己澶х殑TCP/IP鍗忚鏃忕殑渚嬬▼搴?Java搴旂敤紼嬪簭鑳藉閫氳繃URL鏉ョ┛榪囩綉緇滄潵璁塊棶榪滅▼瀵硅薄,鐢變簬servlet鏈哄埗鐨勫嚭鐜?浣縅ava緙栫▼闈炲父鐨勯珮鏁?鐜板湪璁稿鐨勫ぇ鐨剋eb server閮芥敮鎸乻ervlet.
銆銆 (3)OO:闈㈠悜瀵硅薄璁捐鏄妸閲嶇偣鏀懼湪瀵硅薄鍙婂璞$殑鎺ュ彛涓婄殑涓涓紪紼嬫妧鏈?鍏墮潰鍚戝璞″拰C++鏈夊緢澶氫笉鍚?鍦ㄤ笌澶氶噸緇ф壙鐨勫鐞嗗強Java鐨勫師綾繪ā鍨?
銆銆(4)鍋ュ.鐗規?Java閲囧彇浜嗕竴涓畨鍏ㄦ寚閽堟ā鍨?鑳藉噺灝忛噸鍐欏唴瀛樺拰鏁版嵁宕╂簝鐨勫彲鑳藉瀷
銆銆(5)瀹夊叏:Java鐢ㄦ潵璁捐緗戣礬鍜屽垎甯冪郴緇?榪欏甫鏉ヤ簡鏂扮殑瀹夊叏闂,Java鍙互鐢ㄦ潵鏋勫緩闃茬梾姣掑拰闃叉敾鍑葷殑System.浜嬪疄璇佹槑Java鍦ㄩ槻姣掕繖涓鏂歸潰鍋氱殑姣旇緝濂?
銆銆(6)涓珛浣撶郴緇撴瀯:Java緙栬瘧鍏剁敓鎴愪綋緋葷粨鏋勪腑绔嬬殑鐩爣鏂囦歡鏍煎紡鍙互鍦ㄥ緢澶氬鐞嗗櫒涓婃墽琛?緙栬瘧鍣ㄤ駭鐢熺殑鎸囦護瀛楄妭鐮?Javabytecode)瀹炵幇姝ょ壒鎬?姝ゅ瓧鑺傜爜鍙互鍦ㄤ換浣曟満鍣ㄤ笂瑙i噴鎵ц.
銆銆(7)鍙Щ妞嶆?Java涓鍩烘湰鏁版嵁緇撴瀯綾誨瀷鐨勫ぇ灝忓拰綆楁硶閮芥湁涓ユ牸鐨勮瀹氭墍浠ュ彲縐繪鎬у緢濂?
銆銆(8)澶氱嚎紼?Java澶勭悊澶氱嚎紼嬬殑榪囩▼寰堢畝鍗?Java鎶婂綰跨▼瀹炵幇浜ょ粰搴曚笅鎿嶄綔緋葷粺鎴栫嚎紼嬬▼搴忓畬鎴?鎵浠ュ綰跨▼鏄疛ava浣滀負鏈嶅姟鍣ㄧ寮鍙戣璦鐨勬祦琛屽師鍥犱箣涓
銆銆(9)Applet鍜宻ervlet:鑳藉鍦ㄧ綉欏典笂鎵ц鐨勭▼搴忓彨Applet,闇瑕佹敮鎸丣ava鐨勬祻瑙堝櫒寰堝,鑰宎pplet鏀寔鍔ㄦ佺殑緗戦〉,榪欐槸寰堝鍏朵粬璇█鎵涓嶈兘鍋氬埌鐨?
銆銆
銆銆 鍩烘湰姒傚康:
銆銆1.OOP涓敮涓鍏崇郴鐨勬槸瀵硅薄鐨勬帴鍙f槸浠涔?灝卞儚璁$畻鏈虹殑閿鍞晢濂逛笉綆$數婧愬唴閮ㄧ粨鏋勬槸鎬庢牱鐨?浠栧彧鍏崇郴鑳藉惁緇欎綘鎻愪緵鐢靛氨琛屼簡,涔熷氨鏄彧瑕佺煡閬揷an or not鑰屼笉鏄痟ow and why.鎵鏈夌殑紼嬪簭鏄敱涓瀹氱殑灞炴у拰琛屼負瀵硅薄緇勬垚鐨?涓嶅悓鐨勫璞$殑璁塊棶閫氳繃鍑芥暟璋冪敤鏉ュ畬鎴?瀵硅薄闂存墍鏈夌殑浜ゆ祦閮芥槸閫氳繃鏂規硶璋冪敤,閫氳繃瀵瑰皝瑁呭璞℃暟鎹?寰堝ぇ闄愬害涓婃彁楂樺鐢ㄧ巼.
銆銆2.OOP涓渶閲嶈鐨勬濇兂鏄被,綾繪槸妯℃澘鏄摑鍥?浠庣被涓瀯閫犱竴涓璞?鍗沖垱寤轟簡榪欎釜綾葷殑涓涓疄渚?instance)
銆銆3.灝佽:灝辨槸鎶婃暟鎹拰琛屼負緇撳悎璧峰湪涓涓寘涓?騫跺瀵硅薄浣跨敤鑰呴殣钘忔暟鎹殑瀹炵幇榪囩▼,涓涓璞′腑鐨勬暟鎹彨浠栫殑瀹炰緥瀛楁(instance field)
銆銆4.閫氳繃鎵╁睍涓涓被鏉ヨ幏寰椾竴涓柊綾誨彨緇ф壙(inheritance),鑰屾墍鏈夌殑綾婚兘鏄敱Object鏍硅秴綾繪墿灞曡屽緱,鏍硅秴綾諱笅鏂囦細鍋氫粙緇?
銆銆5.瀵硅薄鐨?涓富瑕佺壒鎬?
銆銆behavior---璇存槑榪欎釜瀵硅薄鑳藉仛浠涔?
銆銆state---褰撳璞℃柦鍔犳柟娉曟椂瀵硅薄鐨勫弽鏄?
銆銆identity---涓庡叾浠栫浉浼艱涓哄璞$殑鍖哄垎鏍囧織.
銆銆姣忎釜瀵硅薄鏈夊敮涓鐨刬ndentity 鑰岃繖3鑰呬箣闂寸浉浜掑獎鍝?
銆銆6.綾諱箣闂寸殑鍏崇郴:
銆銆use-a :渚濊禆鍏崇郴
銆銆has-a :鑱氬悎鍏崇郴
銆銆is-a :緇ф壙鍏崇郴--渚?A綾葷戶鎵夸簡B綾?姝ゆ椂A綾諱笉浠呮湁浜咮綾葷殑鏂規硶,榪樻湁鍏惰嚜宸辯殑鏂規硶.(涓у瓨鍦ㄤ簬鍏辨т腑)
銆銆7.鏋勯犲璞′嬌鐢ㄦ瀯閫犲櫒:鏋勯犲櫒鐨勬彁鍑?鏋勯犲櫒鏄竴縐嶇壒孌婄殑鏂規硶,鏋勯犲璞″茍瀵瑰叾鍒濆鍖?
渚?Data綾葷殑鏋勯犲櫒鍙獶ata
銆銆new Data()---鏋勯犱竴涓柊瀵硅薄,涓斿垵濮嬪寲褰撳墠鏃墮棿.
銆銆Data happyday=new Data()---鎶婁竴涓璞¤祴鍊肩粰涓涓彉閲廻appyday,浠庤屼嬌璇ュ璞¤兘澶熷嬈′嬌鐢?姝ゅ瑕佸0鏄庣殑浣垮彉閲忎笌瀵硅薄鍙橀噺浜岃呮槸涓嶅悓鐨?new榪斿洖鐨勫兼槸涓涓紩鐢?
銆銆鏋勯犲櫒鐗圭偣:鏋勯犲櫒鍙互鏈?涓?涓涓垨澶氫釜鍙傛暟
銆銆鏋勯犲櫒鍜岀被鏈夌浉鍚岀殑鍚嶅瓧
銆銆涓涓被鍙互鏈夊涓瀯閫犲櫒
銆銆鏋勯犲櫒娌℃湁榪斿洖鍊?/p>
銆銆鏋勯犲櫒鎬繪槸鍜宯ew榪愮畻絎︿竴璧蜂嬌鐢?
銆銆8.閲嶈澆:褰撳涓柟娉曞叿鏈夌浉鍚岀殑鍚嶅瓧鑰屽惈鏈変笉鍚岀殑鍙傛暟鏃?渚垮彂鐢熼噸杞?緙栬瘧鍣ㄥ繀欏繪寫閫夊嚭璋冪敤鍝釜鏂規硶.
銆銆9.鍖?package)Java鍏佽鎶婁竴涓垨澶氫釜綾繪敹闆嗗湪涓璧鋒垚涓轟竴緇?縐頒綔鍖?浠ヤ究浜庣粍緇囦換鍔?鏍囧噯Java搴撳垎涓鴻澶氬寘.java.lang java.util java,net絳?鍖呮槸鍒嗗眰嬈$殑鎵鏈夌殑java鍖呴兘鍦╦ava鍜宩avax鍖呭眰嬈″唴.
銆銆10.緇ф壙鎬濇兂:鍏佽鍦ㄥ凡緇忓瓨鍦ㄧ殑綾葷殑鍩虹涓婃瀯寤烘柊鐨勭被,褰撲綘緇ф壙涓涓凡緇忓瓨鍦ㄧ殑綾繪椂,閭d箞浣犲氨澶嶇敤浜嗚繖涓被鐨勬柟娉曞拰瀛楁,鍚屾椂浣犲彲浠ュ湪鏂扮被涓坊鍔犳柊鐨勬柟娉曞拰瀛楁.
銆銆11.鎵╁睍綾?鎵╁睍綾誨厖鍒嗕綋鐜頒簡is-a鐨勭戶鎵垮叧緋? 褰㈠紡涓?class (瀛愮被) extends (鍩虹被).
銆銆12.澶氭?鍦╦ava涓?瀵硅薄鍙橀噺鏄鎬佺殑.鑰宩ava涓笉鏀寔澶氶噸緇ф壙.
銆銆13.鍔ㄦ佺粦瀹?璋冪敤瀵硅薄鏂規硶鐨勬満鍒?
銆銆(1)緙栬瘧鍣ㄦ鏌ュ璞″0鏄庣殑綾誨瀷鍜屾柟娉曞悕.
銆銆(2)緙栬瘧鍣ㄦ鏌ユ柟娉曡皟鐢ㄧ殑鍙傛暟綾誨瀷.
銆銆(3)闈欐佺粦瀹?鑻ユ柟娉曠被鍨嬩負priavte static final 緙栬瘧鍣ㄤ細鍑嗙‘鐭ラ亾璇ヨ皟鐢ㄥ摢涓柟娉?
銆銆(4)褰撶▼搴忚繍琛屽茍涓斾嬌鐢ㄥ姩鎬佺粦瀹氭潵璋冪敤涓涓柟娉曟椂,閭d箞铏氭嫙鏈哄繀欏昏皟鐢▁鎵鎸囧悜鐨勫璞$殑瀹為檯綾誨瀷鐩稿尮閰嶇殑鏂規硶鐗堟湰.
銆銆(5)鍔ㄦ佺粦瀹?鏄緢閲嶈鐨勭壒鎬?瀹冭兘浣跨▼搴忓彉寰楀彲鎵╁睍鑰屼笉闇瑕侀噸緙栬瘧宸插瓨浠g爜.
銆銆14.final綾?涓洪槻姝粬浜轟粠浣犵殑綾諱笂媧劇敓鏂扮被,姝ょ被鏄笉鍙墿灞曠殑.
銆銆15.鍔ㄦ佽皟鐢ㄦ瘮闈欐佽皟鐢ㄨ姳璐圭殑鏃墮棿瑕侀暱,
銆銆16.鎶借薄綾?瑙勫畾涓涓垨澶氫釜鎶借薄鏂規硶鐨勭被鏈韓蹇呴』瀹氫箟涓篴bstract
銆銆渚? public abstract string getDescripition
銆銆17.Java涓殑姣忎竴涓被閮芥槸浠嶰bject綾繪墿灞曡屾潵鐨?
銆銆18.object綾諱腑鐨別qual鍜宼oString鏂規硶.
銆銆equal鐢ㄤ簬嫻嬭瘯涓涓璞℃槸鍚﹀悓鍙︿竴涓璞$浉絳?
銆銆toString榪斿洖涓涓唬琛ㄨ瀵硅薄鐨勫瓧絎︿覆,鍑犱箮姣忎竴涓被閮戒細閲嶈澆璇ユ柟娉?浠ヤ究榪斿洖褰撳墠鐘舵佺殑姝g‘琛ㄧず.
銆銆 (toString 鏂規硶鏄竴涓緢閲嶈鐨勬柟娉?
銆銆19.閫氱敤緙栫▼:浠諱綍綾葷被鍨嬬殑鎵鏈夊奸兘鍙互鍚宱bject綾繪х殑鍙橀噺鏉ヤ唬鏇?
銆銆20.鏁扮粍鍒楄〃:ArrayList鍔ㄦ佹暟緇勫垪琛?鏄竴涓被搴?瀹氫箟鍦╦ava.uitl鍖呬腑,鍙嚜鍔ㄨ皟鑺傛暟緇勭殑澶у皬.
銆銆21.class綾?object綾諱腑鐨刧etclass鏂規硶榪斿洖ckass綾誨瀷鐨勪竴涓疄渚?紼嬪簭鍚姩鏃跺寘鍚湪main鏂規硶鐨勭被浼氳鍔犺澆,铏氭嫙鏈鴻鍔犺澆浠栭渶瑕佺殑鎵鏈夌被,姣忎竴涓姞杞界殑綾婚兘瑕佸姞杞藉畠闇瑕佺殑綾?
銆銆22.class綾諱負緙栧啓鍙姩鎬佹搷綰礿ava浠g爜鐨勭▼搴忔彁渚涗簡寮哄ぇ鐨勫姛鑳藉弽灝?榪欓」鍔熻兘涓篔avaBeans鐗瑰埆鏈夌敤,浣跨敤鍙嶅皠Java鑳芥敮鎸乂B紼嬪簭鍛樹範鎯嬌鐢ㄧ殑宸ュ叿.
鑳藉鍒嗘瀽綾昏兘鍔涚殑紼嬪簭鍙弽灝勫櫒,Java涓彁渚涙鍔熻兘鐨勫寘鍙獼ava.lang.reflect鍙嶅皠鏈哄埗鍗佸垎寮哄ぇ.
銆銆1.鍦ㄨ繍琛屾椂鍒嗘瀽綾葷殑鑳藉姏.
銆銆2.鍦ㄨ繍琛屾椂鎺㈠療綾葷殑瀵硅薄.
銆銆3.瀹炵幇閫氱敤鏁扮粍鎿嶇旱浠g爜.
銆銆4.鎻愪緵鏂規硶瀵硅薄.
銆銆鑰屾鏈哄埗涓昏閽堝鏄伐鍏瘋呰屼笉鏄簲鐢ㄥ強紼嬪簭.
銆銆鍙嶅皠鏈哄埗涓殑鏈閲嶈鐨勯儴鍒嗘槸鍏佽浣犳鏌ョ被鐨勭粨鏋?鐢ㄥ埌鐨凙PI鏈?
銆銆java.lang.reflect.Field 榪斿洖瀛楁.
銆銆java.reflect.Method 榪斿洖鏂規硶.
銆銆java.lang.reflect.Constructor 榪斿洖鍙傛暟.
銆銆鏂規硶鎸囬拡:java娌℃湁鏂規硶鎸囬拡,鎶婁竴涓柟娉曠殑鍦板潃浼犵粰鍙︿竴涓柟娉?鍙互鍦ㄥ悗闈㈣皟鐢ㄥ畠,鑰屾帴鍙f槸鏇村ソ鐨勮В鍐蟲柟妗?
銆銆23.鎺ュ彛(Interface)璇存槑綾昏鍋氫粈涔堣屼笉鎸囧畾濡備綍鍘誨仛,涓涓被鍙互瀹炵幇涓涓垨澶氫釜interface.
銆銆24.鎺ュ彛涓嶆槸涓涓被,鑰屾槸瀵圭鍚堟帴鍙h姹傜殑綾葷殑涓濂楄鑼?
銆銆鑻ュ疄鐜頒竴涓帴鍙i渶瑕?涓楠?
銆銆1.澹版槑綾婚渶瑕佸疄鐜扮殑鎸囧畾鎺ュ彛.
銆銆2.鎻愪緵鎺ュ彛涓殑鎵鏈夋柟娉曠殑瀹氫箟.
銆銆澹版槑涓涓被瀹炵幇涓涓帴鍙i渶瑕佷嬌鐢╥mplements 鍏抽敭瀛?/p>
銆銆class actionB implements Comparable 鍏禷ctionb闇瑕佹彁渚汣ompareTo鏂規硶,鎺ュ彛涓嶆槸綾?涓嶈兘鐢╪ew瀹炰緥鍖栦竴涓帴鍙?
銆銆25.涓涓被鍙湁涓涓秴綾?浣嗕竴涓被鑳藉疄鐜板涓帴鍙?Java涓殑涓涓噸瑕佹帴鍙?/p>
銆銆Cloneable
銆銆26.鎺ュ彛鍜屽洖璋?緙栫▼涓涓父鐢ㄧ殑妯″紡鏄洖璋冩ā寮?鍦ㄨ繖縐嶆ā寮忎腑浣犲彲浠ユ寚瀹氬綋涓涓壒瀹氭椂闂村彂鐢熸椂鍥炶皟瀵硅薄涓婄殑鏂規硶.
銆銆渚?ActionListener 鎺ュ彛鐩戝惉.
銆銆綾諱技鐨凙PI鏈?java.swing.JOptionPane
銆銆java.swing.Timer
銆銆java.awt.Tookit
銆銆27.瀵硅薄clone:clone鏂規硶鏄痮bject涓涓繚鎶ゆ柟娉?榪欐剰鍛崇潃浣犵殑浠g爜涓嶈兘綆鍗曠殑璋冪敤瀹?
銆銆28.鍐呴儴綾?涓涓唴閮ㄧ被鐨勫畾涔夋槸瀹氫箟鍦ㄥ彟涓涓唴閮ㄧ殑綾?/p>
銆銆鍘熷洜鏄?1.涓涓唴閮ㄧ被鐨勫璞¤兘澶熻闂垱寤哄畠鐨勫璞$殑瀹炵幇,鍖呮嫭縐佹湁鏁版嵁
銆銆2.瀵逛簬鍚屼竴涓寘涓殑鍏朵粬綾繪潵璇?鍐呴儴綾昏兘澶熼殣钘忚搗鏉?
銆銆3.鍖垮悕鍐呴儴綾誨彲浠ュ緢鏂逛究鐨勫畾涔夊洖璋?
銆銆4.浣跨敤鍐呴儴綾誨彲浠ラ潪甯告柟渚跨殑緙栧啓浜嬩歡椹卞姩紼嬪簭.
銆銆29.浠g悊綾?proxy):
銆銆1.鎸囧畾鎺ュ彛瑕佹眰鎵鏈変唬鐮?/p>
銆銆2.object綾誨畾涔夌殑鎵鏈夌殑鏂規硶(toString equals)
銆銆30.鏁版嵁綾誨瀷:Java鏄己璋冪被鍨嬬殑璇█,姣忎釜鍙橀噺閮藉繀欏誨厛鐢蟲槑瀹冮兘綾誨瀷,java涓誨叡鏈?涓熀鏈被鍨?4縐嶆槸鏁村瀷,2縐嶆槸嫻偣鍨?涓縐嶆槸瀛楃鍨?琚敤浜嶶nicode緙栫爜涓殑瀛楃,甯冨皵鍨?