java的基本數(shù)據(jù)類型有八種

1、java鐨勫熀鏈暟鎹被鍨嬫湁鍏java鐨勫熀鏈暟鎹被鍨嬫湁鍏 鍥涚被鍏鍩烘湰鏁版嵁綾誨瀷1. 鏁村瀷byte錛？瀛楄妭錛？short錛？涓瓧鑺傦級int錛？涓瓧鑺傦級long錛?涓 瓧鑺傦級2. 嫻偣鍨?float錛？涓瓧鑺傦級double錛？涓瓧鑺傦級3. 閫昏緫鎬?boolean錛堝叓鍒嗕箣涓？涓瓧鑺傦級4. 瀛楃 鍨?char錛?涓 瓧鑺傦紝涓？涓瓧絎兘瀛樺偍涓嬩竴涓腑鏂囨眽瀛楋級鍩烘湰鏁版嵁綾誨瀷涓庡寘瑁呼被瀵瑰簲鍏崇郴鍛岄粯璁?shortShort錛坰hort錛?intIn teger0longLo ng0LcharChar'u0000'錛堜粈涔堥兘娌

2、C湁錛 ?floatFloatO.OfdoubleDouble0.0dboolea nBoolea nfalse鑻二煇涓被鐨勬煇涓 垚鍛樻槸鍩烘湰鏁版嵁綾誨瀷錛屽嵆浣挎病鏈夂垵濮嬪嶷錛宩ava涔熶細紜 繚瀹冭幏寰椾竴涓粯璁？鹼紝濡備笂鎵？紺恒？傦紙榪欑鍒濆 鍖栨柟娉曞彧鏄敤浜庢垚鍛樺彉閲忥紝涓嶉？傜敤浜庡眬閮厶彉閲忥級銆 ?jdk1.5 鏀 寔鑷 姩鐫嗚綆便？傚彲浠二皢鍩烘湰鏁版嵁綾誨瀷杞崲鎴愬畠鐨勫寘瑁呼被瑁呼錛堬級錛?In teger a = new In teger a = 100 錛?鐫嗙int b = new In tger錛?00 錛夛紱涓？涓瓧鑺傜瓑浜？浣嶏紝涓？涓瓧鑺傜瓑浜？5

3、6涓暟錛?128鍒?27涓？涓嫳鏂囧瓧姣嶆垨涓？涓樋鐫変集鏁板瓧灝辨槸涓?涓瓧絎1紝鍗犵敤涓？涓瓧鑺?涓？涓眽瀛椾袱涓瓧絎1紝鍗犵敤涓壬釜瀛楄妭鍩烘湰鏁版嵁綾誨瀷鑷姩杞崲byte->short , char- >in t-> longfloat->double int ->floatIon g->double灝懺彲杞元錛屽元杞曜浼氬療鍘葷簿搴瀛楃涓蹭笌鍩烘湰綾誨瀷鎴栧叾浠栫被鍨嬮棿鐨勮漿鎹?鈶村叾瀹幕被鍨嬪悜瀛楃涓茬殑杞崲鈶犺皟鐢丨被鐨勪覆杞崲鏂規(guī)硶:X.toString()錛屼緥濡傦細StringBuffer綾伙紱鈶。嚜鍔乂漿鎹？X+鈥溾？ ?鈶 嬌鐢&q

4、uot;tring 鐨勬柟娉？String.volueOf(X);鈶靛瓧絎八覆浣滀負鍊？鍚戝叾瀹幕被鍨嬬殑杞崲鈶犲厛杞崲鎴愮浉搴旂殑灝佽錯厶疄渚？鍐嶈皟鐢厶搴旂殑鏂規(guī)硶杞崲鎴愬叾瀹幕被鍨?渚嬪錛屽瓧絎八腑鈥?2.1鈥濊漿鎹ouble鍨嬬殑鍊肩殑鏍煎紡涓？new Float(鈥?2.1鈥？.doubleValue()銆備篃鍙互鐢？Double.valueOf(鈥？2.1 鈥？.doubleValue()鈶C潤鎬乸arseXXX鏂規(guī)硶Stri ng s = "1"byte b = Byte.parseByte( s ); short t = Short.parseShort( s ); int i = In teger.parse lnt( s );long l = Lon g.parseL ong( s );Float f = Float.parseFloat( s );Double d = Double