ÀàºÍ¶ÔÏó
Ò»¡¢Ñ¡ÔñÌâ
1¡¢ÏÂÃæ¶Ô·½·¨µÄ×÷ÓÃÃèÊö²»ÕýÈ·µÄÊÇ£º£¨ d d £© A¡¢ ʹ³ÌÐò½á¹¹ÇåÎú B¡¢ ¹¦Äܸ´Óà C¡¢ ´úÂë¼ò½à D¡¢ Öظ´´úÂë 2¡¢·½·¨ÄÚ¶¨ÒåµÄ±äÁ¿£º£¨ b b £©
A ¡¢Ò»¶¨ÔÚ·½·¨ÄÚËùÓÐλÖÿɼû B¡¢ ¿ÉÄÜÔÚ·½·¨Äڵľֲ¿Î»Öÿɼû
C¡¢ ÔÚ·½·¨Íâ¿ÉÒÔʹÓà D¡¢ ÔÚ·½·¨Íâ¿É¼û 3¡¢·½·¨µÄÐβΣº£¨ a£©
A¡¢¿ÉÒÔûÓÐ B¡¢ÖÁÉÙÓÐÒ»¸ö C¡¢±ØÐ붨Òå¶à¸öÐβΠD¡¢Ö»ÄÜÊǼòµ¥±äÁ¿ 4¡¢·½·¨µÄµ÷Ó㺣¨ c£©
A¡¢±ØÐëÊÇÒ»ÌõÍêÕûµÄÓï¾ä B¡¢Ö»ÄÜÊÇÒ»¸ö±í´ïʽ
C¡¢¿ÉÄÜÊÇÓï¾ä£¬Ò²¿ÉÄÜÊDZí´ïʽ D¡¢±ØÐëÌṩʵ¼Ê²ÎÊý
5¡¢return Óï¾ä£º( d d)
A¡¢²»ÄÜÓÃÀ´·µ»Ø¶ÔÏó B¡¢Ö»¿ÉÒÔ·µ»ØÊýÖµ C¡¢·½·¨¶¼±ØÐ뺬ÓÐ D¡¢Ò»¸ö·½·¨ÖпÉÒÔÓжà¸ö return Óï¾ä 6¡¢void µÄº¬Ò壺£¨ d d£©
A¡¢·½·¨ÌåΪ¿Õ B¡¢·½·¨ÌåûÓÐÒâÒå C¡¢¶¨Òå·½·¨Ê±±ØÐëʹÓà D¡¢·½·¨Ã»Óзµ»ØÖµ 7¡¢main()·½·¨µÄ·µ»ØÀàÐÍÊÇ£º£¨ c c £© A ¡¢boolean B¡¢ int C¡¢ void D¡¢ static 8¡¢·½·¨ÖØÔØËùÉæ¼°µÄ·½·¨£º£¨ a £©
A¡¢ÓÐÏàͬµÄÃû×Ö B¡¢²ÎÊý¸öÊý±ØÐ벻ͬ C¡¢²ÎÊýÀàÐͱØÐ벻ͬ D¡¢·µ»ØÀàÐͱØÐ벻ͬ 9¡¢ÏÂÃæ¹ØÓÚÀàºÍ¶ÔÏóÖ®¼ä¹ØϵµÄÃèÊö£¬ÕýÈ·µÄÊÇ£¨ c c £© A¡¢Áª½Ó¹Øϵ £Â¡¢°üº¬¹Øϵ £Ã¡¢¾ßÌåÓë³éÏóµÄ¹Øϵ £Ä¡¢ÀàÊǶÔÏóµÄ¾ßÌ廯
10¡¢ÏÂÃæ¹ØÓÚjavaÖÐÀàµÄ˵·¨ÄĸöÊDz»ÕýÈ·µÄ£¨ c £© A¡¢ÀàÌåÖÐÖ»ÄÜÓбäÁ¿¶¨ÒåºÍ³ÉÔ±·½·¨µÄ¶¨Ò壬²»ÄÜÓÐÆäËûÓï¾ä¡£
B¡¢¹¹Ôì·½·¨ÊÇÀàÖеÄÌØÊâ·½·¨¡£
C¡¢ÀàÒ»¶¨ÒªÉùÃ÷ΪpublicµÄ£¬²Å¿ÉÒÔÖ´ÐС£
D¡¢Ò»¸öjavaÎļþÖпÉÒÔÓжà¸öclass¶¨Òå¡£ 11¡¢ÏÂÁÐÄĸöÀàÉùÃ÷ÊÇÕýÈ·µÄ( d) A¡¢ public void H1£û?£ý B ¡¢public class Move()£û?£ý
C¡¢ public class void number{} D¡¢ public class Car£û?£ý
12¡¢ÏÂÃæµÄ·½·¨ÉùÃ÷ÖУ¬ÄĸöÊÇÕýÈ·µÄ£¨ c c£©
A¡¢ public class methodName(){} B¡¢ public void int methodName(){}
C¡¢ public void methodName(){} D¡¢public void methodName{}
13¡¢ÏÂÊöÄÄЩ˵·¨ÊDz»ÕýÈ·µÄ£¿£¨ b £©
A¡¢ ʵÀý±äÁ¿ÊÇÀàµÄ³ÉÔ±±äÁ¿ B¡¢ ʵÀý±äÁ¿ÊÇÓÃstatic¹Ø¼ü×ÖÉùÃ÷µÄ
C¡¢ ·½·¨±äÁ¿ÔÚ·½·¨Ö´ÐÐʱ´´½¨ D¡¢·½·¨±äÁ¿ÔÚʹÓÃ֮ǰ±ØÐë³õʼ»¯
14¡¢ÏÂÃæ¶Ô¹¹Ôì·½·¨µÄÃèÊö²»ÕýÈ·ÊÇ( b b )¡£
A¡¢ ϵͳÌṩĬÈϵĹ¹Ôì·½·¨ B¡¢ ¹¹Ôì·½·¨¿ÉÒÔÓвÎÊý£¬ËùÒÔÒ²¿ÉÒÔÓзµ»ØÖµ
C¡¢ ¹¹Ôì·½·¨¿ÉÒÔÖØÔØ D¡¢ ¹¹Ôì·½·¨¿ÉÒÔÉèÖòÎÊý
15¡¢¶¨ÒåÀàͷʱ£¬²»¿ÉÄÜÓõ½µÄ¹Ø¼ü×ÖÊÇ( bb b)¡£ A¡¢ class B¡¢private C¡¢extends D¡¢public
16¡¢ÏÂÁÐÀàÍ·¶¨ÒåÖУ¬´íÎóµÄÊÇ( a )¡£ A¡¢public x extends y {...} B¡¢ public class x extends y {...} C¡¢class x extends y implements y1 {...} D¡¢class x {...} 17¡¢Éè AΪÒѶ¨ÒåµÄÀàÃû£¬ÏÂÁÐÉùÃ÷AÀàµÄ¶ÔÏóaµÄÓï¾äÖÐÕýÈ·µÄÊÇ ( d ) ¡£
A¡¢ float A a; B¡¢ public A a=A( ); C¡¢ A a=new int( ); D¡¢static A a=new A( );
18¡¢Éèi , jΪÀàXÖж¨ÒåµÄintÐͱäÁ¿Ãû£¬ÏÂÁÐXÀàµÄ¹¹Ôì·½·¨Öв»ÕýÈ·µÄÊÇ ( a )¡£
A¡¢ void X(int k ){ i=k; } B¡¢ X(int k ){ i=k; } C¡¢X(int m, int n ){ i=m; j=n; } D¡¢X( ){i=0;j=0; } 19¡¢ÓÐÒ»¸öÀàA£¬ÒÔÏÂΪÆä¹¹Ôì·½·¨µÄÉùÃ÷£¬ÆäÖÐÕýÈ·µÄÊÇ
( b )¡£ A¡¢void A(int x){...} B¡¢ public A(int x){...}
C¡¢public a(int x){...} D¡¢static A(int x){...}
20¡¢ÏÂÁз½·¨¶¨ÒåÖУ¬²»ÕýÈ·µÄÊÇ( c )¡£
A¡¢ float x( int a,int b ) { return (a-b); } B¡¢ int x( int a,int b) { return a-b; }
C¡¢ int x( int a,int b ); { return a*b; } D¡¢ int x(int a,int b) { return 1.2*(a+b); }
21¡¢Éèi , jΪÀàXÖж¨ÒåµÄdoubleÐͱäÁ¿Ãû£¬ÏÂÁÐXÀàµÄ¹¹Ôì·½·¨Öв»ÕýÈ·µÄÊÇ( a )¡£
A¡¢double X(double k ){ i=k; return i; } B¡¢ X( ){i=6;j=8; }
C¡¢ X(double m, double n ){ i=m; j=n; } D¡¢X(double k ){ i=k; }
22¡¢Éè ClassAΪÒѶ¨ÒåµÄÀàÃû£¬ÏÂÁÐÉùÃ÷Class AÀàµÄ¶ÔÏócaµÄÓï¾äÖÐÕýÈ·µÄÊÇ( a )¡£ A¡¢public ClassA ca=new ClassA( ); B¡¢ public ClassA ca=ClassA( );
C¡¢ ClassA ca=new class( ); D¡¢ ca ClassA; 23¡¢Éèm , nΪÀàAÖж¨ÒåµÄintÐͱäÁ¿Ãû£¬ÏÂÁÐAÀàµÄ¹¹Ôì·½·¨Öв»ÕýÈ·µÄÊÇ( a )¡£ A¡¢ void A(int k ){ m=k; } B¡¢A(int k ){ m=k; } C¡¢ A(int m, int n ){m=i; n=j; } D¡¢ A( ){m=0;n=0; }
24¡¢Éèi¡¢j¡¢kΪÀàSchoolÖж¨ÒåµÄintÐͱäÁ¿Ãû£¬ÏÂÁÐÀàSchoolµÄ¹¹Ôì·½·¨Öв»ÕýÈ·µÄÊÇ( b )¡£ A¡¢ School ( int m){ ... } B¡¢ void School ( int m){ ... }
C¡¢School ( int m, int n){ ... } D¡¢School ( int h,int m,int n){ ... }
25¡¢ÏÂÁÐÑ¡ÏîÖУ¬ÄĸöÊÇjavaÓïÑÔËùÓÐÀàµÄ¸¸Àà( c ) A¡¢String B¡¢ Vector C¡¢ Object D¡¢KeyEvent
26¡¢JavaÖÐËùÓеÄÀ඼ÊÇͨ¹ýÖ±½Ó»ò¼ä½ÓµØ¼Ì³Ð£¨ a £©ÀàµÃµ½µÄ¡££¨ £© A¡¢ java.lang.Object B¡¢ java.lang.Class C¡¢ ÈÎÒâÀà D¡¢
ÒÔÉϴ𰸶¼²»¶Ô
27¡¢¶ÔÓÚÈÎÒâÒ»¸öÀ࣬Óû§ËùÄܶ¨ÒåµÄ¹¹Ôì·½·¨µÄ¸öÊýÖÁ¶àΪ£¨ d £©¡£
A¡¢0¸ö B¡¢1¸ö C¡¢2¸ö D¡¢ÈÎÒâ¸ö 28¡¢¹¹Ôì·½·¨ºÎʱ±»µ÷Ó㨠b £© A¡¢ÀඨÒåʱ B¡¢´´½¨¶ÔÏóʱ C¡¢µ÷ÓöÔÏó·½·¨Ê± D¡¢Ê¹ÓöÔÏóµÄ±äÁ¿Ê± 29¡¢ÀàTest1¶¨ÒåÈçÏ public class Test1{
public float aMethod£¨float a£¬float b£©{ } £¨ b £© }
½«ÒÔÏÂÄÄÖÖ·½·¨²åÈ루 £©ÊDz»ºÏ·¨µÄ¡££¨ £© A¡¢ public float aMethod£¨float a£¬ float b£¬float c£©{ } B¡¢ public float aMethod£¨float c£¬float d£©{ } C¡¢ public int aMethod£¨int a£¬ int b£©{ } D¡¢public int aMethod£¨int a£¬int b£¬int c£©{ }
30¡¢ÓÃÀ´µ¼ÈëÒѶ¨ÒåºÃµÄÀà»ò°üµÄÓï¾äÊÇ£¨ b £©
A¡¢main B¡¢import C¡¢public class D¡¢class 31¡¢ÀàÊǾßÓÐÏàͬ£¨ a £©µÄ¼¯ºÏ£¬ÊǶԶÔÏóµÄ³éÏóÃèÊö¡££¨ £©
A¡¢ ÊôÐԺͷ½·¨ B¡¢ ±äÁ¿ºÍ·½·¨ C¡¢±äÁ¿ºÍÊý¾Ý D¡¢ ¶ÔÏóºÍÊôÐÔ
32¡¢Ò»¸ö¶ÔÏóµÄÉúÃüÖÜÆÚ·Ö£¨ c £©3¸ö½×¶Î¡££¨ £© A¡¢Ê¹Óá¢Éú³ÉºÍÇå³ý B¡¢Çå³ý¡¢Ê¹ÓúÍÉú³É C¡¢Éú³É¡¢Ê¹ÓúÍÇå³ý D¡¢Éú³É¡¢Çå³ýºÍʹÓà 33¡¢ÒÔÏ£¨a £©ÊÇרÃÅÓÃÓÚ´´½¨¶ÔÏóµÄ¹Ø¼ü×Ö¡££¨ £© A¡¢new B¡¢double C¡¢class D¡¢int 34¡¢±í´ïʽ£¨ c£©½«·µ»Øµ±Ç°µÄϵͳʱ¼äºÍÈÕÆÚ £¨ £© A¡¢ DataFormat.getDataTime B ¡¢ new Data C ¡¢DataFormat.getDataTimeInstance() D¡¢ new CurrentData 35¡¢£¨£©Îª³ÌÐòÔ±ÌṩÁËһЩ¿ÉÍê³ÉͨÓÃÈÎÎñµÄÏÖÓÐÀà £¨ A£© A¡¢ JavaÀà¿â B ¡¢preExisting C¡¢ java ´úÂë D ¡¢library¹Ø¼ü×Ö
36¡¢³ÌÐòԱͨ³£»áʹÓ㨠C £©
A ¡¢³ÌÐòÔ±¶¨ÒåµÄ·½·¨ B ¡¢ÏÖÓеķ½·¨
C ¡¢³ÌÐòÔ±¶¨ÒåµÄµÃ´øÒÔ¼°ÏÖÓеķ½·¨ D ¡¢¼È²»ÊdzÌÐòÔ±¶¨ÒåµÄ·½·¨Ò²²»ÊÇÏÖÓеķ½·¨
37¡¢ÀûÓ÷½·¨Öеģ¨£© Óï¾ä¿ÉΪµ÷Ó÷½·¨·µ»ØÒ»¸öÖµ£¨ A £©
£Á¡¢return B ¡¢back C¡¢end D ¡¢ÒÔÉϴ𰸶¼²»¶Ô 38¡¢£¨ A£©·½·¨ÓÃ×ö·µ»ØÁ½¸ö²ÎÊýÖеĽϴóÖµ£¨ £© A ¡¢max B ¡¢maximum C¡¢ larger D¡¢ greater 39¡¢£¨ D £©½«±»´«ËÍÖÁÒ»¸ö±»µ÷Óõķ½·¨£¨ £© A¡¢ ·µ»ØÖµ B¡¢ ·µ»ØÀàÐÍ C¡¢ ²ÎÊý±í D¡¢ ²ÎÊýÁбí
40¡¢·½·¨µÄ²ÎÊý¿ÉÒÔÊÇ£¨ D £©
A¡¢ ³£Á¿ B¡¢±í´ïʽ C¡¢ ±äÁ¿ D ¡¢ÒÔÉϴ𰸶¼¶Ô 41¡¢£¨£©ÊÇλÓÚ·½·¨Í·ÖеÄÒ»¸öÒÔ¶ººÅ·Ö¸ôµÄÉùÃ÷ÁÐ±í£¨ B £©
£Á¡¢²ÎÊý±í £Â¡¢²ÎÊýÁÐ±í £Ã¡¢Öµ±í £Ä¡¢±äÁ¿±í
42¡¢·½·¨µÄ¶¨ÒåÊÇÓÉ£¨ £©×é³ÉµÄ£¨ D £© A¡¢ Ò»¸ö·½·¨ B ¡¢Ò»¸ö·½·¨Ìå C ¡¢Ò»¶Ô»¨À¨ºÅ D ¡¢ ÒÔÉϴ𰸶¼¶Ô
43¡¢Ò»¸ö£¨ D£©¶ÔÏ󽫰üÀ¨intÐÍÊý¾Ý£¨ £© A¡¢ IntegerObject B¡¢Int C¡¢IntData D¡¢Integer
44¡¢ÔÚ·½·¨µ÷Óùý³ÌÖС£Î»ÓÚ·½·¨ÃûÖ®ºóÔ²À¨ºÅµÄ±äÁ¿±»³ÆΪ£¨ B £©
A¡¢ ±äÔª B ¡¢²ÎÊý C ¡¢Óï¾ä D ¡¢ÉùÃ÷ 45¡¢Ò»ÌõreturnÓï¾ä½«¸øµ÷ÓóÌÐò·µ»Ø£¨D£©¸öÖµ£¨ £© A ¡¢0 B¡¢ 1 C¡¢ ÈÎÒâÊýÁ¿ D¡¢AºÍB 46¡¢·½·¨µÄµÚÒ»Ðб»³ÆΪ·½·¨µÄ£¨ D £©
A ¡¢·½·¨Ìå B¡¢ ±êÌâ C¡¢ µ÷ÓÃÕß D¡¢ ·½·¨Í· 47¡¢ÊµÀý±äÁ¿µÄ×÷ÓÃÓòÕû¸öµÄ( C )
A¡¢ Óï¾ä¿é B ¡¢ ·½·¨ C ¡¢Àà D ¡¢ ÒÔÉϴ𰸶¼²»¶Ô
48¡¢ÔÚij¸ö·½·¨ÄÚ²¿¶¨ÒåµÄ±äÁ¿±»³ÆΪ£¨ B £©
A ¡¢ÊµÀý±äÁ¿ B¡¢¾Ö²¿±äÁ¿ C¡¢ Àà±äÁ¿ D¡¢ Òþ²Ø±äÁ¿ 49¡¢ÔÚÒ»¸öÀàµÄÄÚ²¿ÉùÃ÷£¬µ«ÓÖ´¦ÓÚ¸ÃÀà·½·¨ÍⲿµÄ±äÁ¿±»³ÆΪ£¨ C £©
A¡¢ ¾Ö²¿±äÁ¿ B¡¢ Òþ²Ø±äÁ¿ C¡¢ ʵÀý±äÁ¿ D¡¢³£Á¿ 50¡¢´Ó¶¨Òå¾Ö²¿±äÁ¿Óï¾äµÄÍⲿ·ÃÎʸþֲ¿±äÁ¿£¬»áµ¼Ö£¨£©³öÏÖ £¨ A £©
A¡¢ Âß¼³ö´í B ¡¢ ±àÒë´íÎó C¡¢ ÔËÐдíÎó D ¡¢ ÒÔÉϴ𰸶¼²»¶Ô
51¡¢ÊµÀý±äÁ¿£¨ D £©
A ¡¢ ÊÇÔÚÒ»¸öÀàµÄÄÚ²¿ÉùÃ÷µÄ±äÁ¿ B ¡¢ µÄ×÷ÓÃÓòΪÕû¸öÀà
C ¡¢ ¿É±»Í¬Ò»ÀàÖеÄÈκη½·¨Ëù·ÃÎÊ D ¡¢ ÒÔÉϴ𰸶¼¶Ô
52¡¢µ±·½·¨ÄÚ´«µÝÒ»¸ö²ÎÊýʱ£¬½«¸Ã²ÎÊýÖµµÄÒ»¸ö¿½±´´«µÝ¸ø·½·¨µÄ´«µÝ·½Ê½³ÆΪ£¨ B £©
A¡¢µ÷Óô«µÝ B¡¢ Öµ´«µÝ C¡¢ ÒýÓô«µÝ D ¡¢·½·¨´«µÝ
53¡¢µ±Ò»¸ö±äÁ¿ÔÚÓ¦ÓóÌÐòµÄÕû¸öÉúÃüÖÜÆÚÖб»Ê¹Óã¬ÇÒÕû¸ö¹ý³ÌÖеÄÆäËûÖµÒ²²»Äܱ»¸Ä±äʱ£¬ÄÇô½«ËûÉùÃ÷Ϊһ¸ö£¨ B £©
A ¡¢¾Ö²¿±äÁ¿ B¡¢³£Á¿ C¡¢ÊµÀý±äÁ¿ D¡¢ÒÔÉϴ𰸶¼²»¶Ô
54¡¢¹Ø¼ü×Ö£¨£©±íʾһ¸öÀඨÒåµÄ¿ªÊ¼£¨ C £©
A¡¢ declare B¡¢new C¡¢ class D¡¢ÒÔÉϴ𰸶¼²»¶Ô
55¡¢ÀàµÄ¶¨Òå±ØÐë°üº¬ÔÚÒ»¶Ô£¨£©ÄÚ£¨ B £©
A¡¢·½À¨ºÅ B¡¢»¨À¨ºÅ C¡¢¶ººÅ D¡¢Ô²À¨ºÅ 56¡¢ÊµÀý±äÁ¿µÄ³õʼ»¯£¨ B £©
A ¡¢ÊÇÔÚËûÃÇÉùÃ÷ʱÍê³É B ¡¢ ½«±»ÉèÖÃΪĬÈÏÖµ C ¡¢ÊÇÔÚÒ»¸ö¹¹Ôì·½·¨ÖÐÍê³ÉµÄ D ¡¢ÒÔÉϴ𰸶¼¶Ô 57¡¢Ä³¸ö·½·¨£¬ÔÚ±£Ö¤²ÎÊýÖµÓÐЧÐÔµÄÇ°ÌáÏÂÉèÖÃÆäʵÀý±äÁ¿number£¬¸Ã·½·¨µÄ·½·¨Ãû×îºÃÈ¡£¨ C £©
£Á¡¢number B¡¢ set C¡¢setNumber D¡¢ setValue
58¡¢Ä³¸ö·½·¨£¬ÔÚ±£Ö¤²ÎÊýÖµÓÐЧÐÔµÄÇ°ÌáÏ»ñÈ¡ÆäʵÀý±äÁ¿number£¬¸Ã·½·¨µÄ·½·¨Ãû×îºÃÈ¡£¨ C £© £Á¡¢number B¡¢ get C¡¢getNumber D¡¢ getValue
59¡¢Í¨¹ýʹÓùؼü×Ö£¨£©´´½¨¶ÔÏó£¨ D £© A¡¢ object B ¡¢instantiate C¡¢create D¡¢ new
60¡¢²ÎÕÕÒÔÏÂJava´úÂ룬ÒÔÏÂËĸöÐðÊöÖÐ×îÈ·ÇеÄÊÇ£¨ C £© class A{
int x; static int y;
void fac(String s){System. out. println(£¢×Ö·û´®:£¢+s);} }
A¡¢x¡¢yºÍs¶¼ÊdzÉÔ±±äÁ¿ B¡¢xÊÇʵÀý±äÁ¿¡¢yÊÇÀà±äÁ¿¡¢sÊǾֲ¿±äÁ¿
C¡¢xºÍyÊÇʵÀý±äÁ¿¡¢sÊDzÎÊý D¡¢x¡¢yºÍs¶¼ÊÇʵÀý±äÁ¿
61¡¢ÏÂÁйØÓÚ±äÁ¿×÷ÓÃÓòµÄÃèÊöÖУ¬²»ÕýÈ·µÄÒ»ÏîÊÇ ( C )
A¡¢±äÁ¿ÊôÐÔÊÇÓÃÀ´ÃèÊö±äÁ¿×÷ÓÃÓòµÄ
B¡¢¾Ö²¿±äÁ¿×÷ÓÃÓòÖ»ÄÜÊÇËü×öÔڵķ½·¨´úÂë¶ÎÄÚ C¡¢Àà±äÁ¿ÄÜÔÚÀàµÄ·½·¨ÖÐÉùÃ÷ D¡¢Àà±äÁ¿µÄ×÷ÓÃÓòÊÇÕû¸öÀà
62¡¢ÏÂÁйØÓÚ±äÁ¿×÷ÓÃÓòµÄ˵·¨ÖУ¬ÕýÈ·µÄÒ»ÏîÊÇ ( B )
A¡¢·½·¨²ÎÊýµÄ×÷ÓÃÓòÊÇ·½·¨Íⲿ´úÂë¶Î B¡¢Òì³£´¦Àí²ÎÊýµÄ×÷ÓÃÓòÊÇ·½·¨Íⲿ´úÂë¶Î C¡¢¾Ö²¿±äÁ¿µÄ×÷ÓÃÓòÊÇÕû¸öÀà
D¡¢Àà±äÁ¿µÄ×÷ÓÃÓòÊÇÀàµÄij¸ö·½·¨ 63¡¢SystemÀàÔÚÄĸö°üÖÐ?£¨ D £©
A ¡¢java.util B ¡¢java.io C ¡¢java.awt D ¡¢java.lang
64¡¢¸ø³öÏÂÃæ´úÂë¶Î 1) public class Test { 2) int m, n;
3) public Test() {}
4) public Test(int a) { m=a; }
5) public static void main(String arg[]) { 6) Test t1,t2; 7) int j,k; 8) j=0; k=0;
9) t1=new Test(); 10) t2=new Test(j,k); 11) } 12) }
ÄÄÐн«ÒýÆðÒ»¸ö±àÒëʱ´íÎó£¿ £¨ D £© A ¡¢line 3 B¡¢ line 5 C¡¢ line 6 D¡¢ line 10
65¡¢¶ÔÓÚÏÂÁдúÂë¡¢ 1) class Person {
2) public void printValue(int i, int j) {//... } 3) public void printValue(int i){//... } 4) }
5) public class Teacher extends Person { 6) public void printValue() {//... } 7) public void printValue(int i) {//...} 8) public static void main(String args[]){ 9) Person t = new Teacher(); 10) t.printValue(10); 11) }
µÚ10ÐÐÓï¾ä½«µ÷ÓÃÄÄÐÐÓï¾ä£¿£¨ £©
A ¡¢line 2 B¡¢ line 3 C ¡¢line 6 D¡¢ line 7
66¡¢ÏÂÁйØÓÚ¹¹Ôì·½·¨µÄ˵»°ÕýÈ·µÄÊÇ£¨ B £© A¡¢ ÀàÖеĹ¹Ôì·½·¨²»¿ÉÊ¡
B¡¢ ¹¹Ôì·½·¨±ØÐëÓëÀàͬÃû£¬µ«·½·¨²»ÄÜÓëclassͬÃû C ¡¢ ÀàµÄ¹¹Ôì·½·¨ÔÚÒ»¸ö¶ÔÏó±»´´½¨Ê±×Ô¶¯Ö´ÐÐ D¡¢ Ò»¸öÀàÖ»Äܶ¨ÒåÒ»¸ö¹¹Ôì·½·¨
67¡¢ÏÂÁÐÓï¾äÖУ¬¶Ô¹¹Ôì·½·¨µÄÃèÊö´íÎóµÄÊÇ£¨ D £© A¡¢¹¹Ôì·½·¨µÄÃû³Æ±ØÐëºÍÀàÃûÏàͬ
B¡¢¹¹Ôì·½·¨Ã»Óзµ»ØÖµ£¬·µ»ØÀàÐÍÒ²²»ÄÜÓÃvoid C¡¢¹¹Ôì·½·¨ÔÚÒ»¸öÀàÖпÉÒÔ¶à´Î³öÏÖ
D¡¢µ±ÖØдÁË´ø²ÎÊýµÄ¹¹Ôì·½·¨£¬ÏµÍ³Ä¬ÈϵIJ»´ø²ÎÊýµÄ¹¹Ôì·½·¨ÒÀÈ»´æÔÚ
68¡¢ÏÂÃæ¹ØÓÚjavaÖÐÀàµÄ˵·¨ÄĸöÊDz»ÕýÈ·µÄ£¨ A £© A¡¢ÀàÌåÖÐÖ»ÄÜÓбäÁ¿¶¨ÒåºÍ³ÉÔ±·½·¨µÄ¶¨Ò壬²»ÄÜÓÐÆäËûÓï¾ä
B¡¢¹¹Ôì·½·¨ÊÇÀàÖеÄÌØÊâ·½·¨
C¡¢ÀàÒ»¶¨ÒªÉùÃ÷Ϊpublic µÄ£¬²Å¿ÉÒÔÖ´ÐÐ D¡¢Ò»¸öjavaÎļþÖпÉÒÔÓжà¸öclass¶¨Òå
69¡¢ÏÂÁÐÄĸö ²»ÊÇ ÃæÏò¶ÔÏóµÄÈý´óÌØÐÔÖ®Ò»£¨ D £©
A¡¢ ·â×°ÐÔ B¡¢ ¼Ì³ÐÐÔ C¡¢¶à̬ÐÔ D¡¢ÖØÔØ
70¡¢ÏÂÃæÄÄÖÖÓïÑÔ ²»ÊÇ ÃæÏò¶ÔÏóÓïÑÔ ? ( C )
A¡¢ java B¡¢ C++ C ¡¢ C D¡¢ Smalltalk
71¡¢ÔÚ´´½¨¶ÔÏóʱ ±ØÐ루 D £© A¡¢ÏÈÉùÃ÷¶ÔÏó£¬È»ºó²ÅÄÜʹÓöÔÏó
B¡¢ÏÈÉùÃ÷¶ÔÏó£¬Îª¶ÔÏó·ÖÅäÄÚ´æ¿Õ¼ä£¬È»ºó²ÅÄÜʹÓöÔÏó C¡¢ÏÈÉùÃ÷¶ÔÏó£¬Îª¶ÔÏó·ÖÅäÄÚ´æ¿Õ¼ä£¬¶Ô¶ÔÏó³õʼ»¯£¬È»ºó²ÅÄÜʹÓöÔÏó D¡¢ÉÏÊö˵·¨¶¼¶Ô
72¡¢ÒÔÏÂÐðÊö²»ÕýÈ·µÄÊÇ£¨ D £©
A¡¢ÃæÏò¶ÔÏó·½·¨×·ÇóµÄÄ¿±êÊÇ¡¢¾¡¿ÉÄܵØÔËÓÃÈËÀà×ÔÈ»µÄ˼ά·½Ê½À´½¨Á¢ÎÊÌâ¿Õ¼äµÄÄ£ÐÍ£¬¹¹Ô쾡¿ÉÄÜÖ±¹Û¡¢×ÔÈ»µÄ±í´ïÇó½â·½·¨µÄÈí¼þϵͳ¡£
B¡¢ÃæÏò¶ÔÏó·½·¨µÄÓŵãÓС¢Ò×ÓÚά»¤£¬¿ÉÖØÓÃÐԺã¬Ò×ÓÚÀí½â¡¢À©³äºÍÐ޸ġ£
C¡¢ÃæÏò¶ÔÏ󣽶ÔÏ󣫷ÖÀ࣫¼Ì³Ð£«ÏûϢͨÐÅ¡£
D¡¢ÃæÏò¶ÔÏóµÄ»ù±¾ÌØÕ÷ÊÇ·â×°ÐÔ¡¢¼Ì³ÐÐԺͲ¢ÐÐÐÔ¡£ 73¡¢¶ÔÓÚ¹¹Ô캯Êý£¬ÏÂÁÐÐðÊö²»ÕýÈ·µÄÊÇ£¨ B £©¡£ A¡¢¹¹Ô캯ÊýÊÇÀàµÄÒ»ÖÖÌØÊ⺯Êý£¬ËüµÄ·½·¨Ãû±ØÐëÓëÀàÃûÏàͬ¡£
B¡¢¹¹Ô캯ÊýµÄ·µ»ØÀàÐÍÖ»ÄÜÊÇvoidÐÍ¡£
C¡¢¹¹Ô캯ÊýµÄÖ÷Òª×÷ÓÃÊÇÍê³É¶ÔÀàµÄ¶ÔÏóµÄ³õʼ»¯¹¤×÷¡£
D¡¢Ò»°ãÔÚ´´½¨Ð¶ÔÏóʱ£¬ÏµÍ³»á×Ô¶¯µ÷Óù¹Ô캯Êý¡£ ¶þ¡¢Ìî¿ÕÌâ
1¡¢Í¨³£Óùؼü×Ö NEW À´Ð½¨¶ÔÏó£¬Í¨¹ýÀà´´½¨¶ÔÏóµÄ»ù±¾¸ñʽΪ£º ÀàÃû ¶ÔÏóÃû =new ¹¹Ôì·½·¨(); ¡£
2¡¢Í¨¹ýÀàMyClassÖеIJ»º¬²ÎÊýµÄ¹¹Ôì·½·¨£¬Éú³É¸ÃÀàµÄÒ»¸ö¶ÔÏóobj£¬¿Éͨ¹ýÒÔÏÂÓï¾äʵÏÖ Myclass obj=new Myclass(); ¡£
3¡¢ÃæÏò¶ÔÏó³ÌÐòÉè¼ÆµÄÖ÷ÒªÌصãÊÇ ¼Ì³Ð ¡¢ ¶à̬ ºÍ ·â×° ¡£
4¡¢¹¹Ôì·½·¨ÊÇÀàÖеÄÒ»ÖÖÌØÊâ·½·¨£¬ËüÓÃÀ´¶¨Òå¶ÔÏóµÄ ³õʼ»¯ ¡£
5¡¢ÔÚJava³ÌÐòÖж¨ÒåµÄÀàÖаüÀ¨ÓÐÁ½ÖÖ³ÉÔ±£¬·Ö±ðÊÇ£º ³ÉÔ±±äÁ¿ ¡¢ ³ÉÔ±·½·¨ ¡£
6¡¢ÓÃstaticÐÞÊεķ½·¨£¬³ÆΪ¾²Ì¬·½·¨¡£ËüÃDz»ÊǶÔÏóµÄ·½
·¨£¬¶øÊÇÕû¸öÀàµÄ·½·¨¡£¾²Ì¬·½·¨Ö»ÄÜ´¦ÀíÓùؼü×Ö ÐÞÊεÄÊý¾Ý¡£
7¡¢ÁоÙÈý¸ö³£ÓÃÀà¿âµÄ°ü¡¢ java.util
¡¢java.io ºÍ java.awt ¡£ 8¡¢JavaÖÐËùÓÐÀ඼ÊÇÀà Object µÄ×ÓÀà¡£
9¡¢JavaÖÐÀà³ÉÔ±µÄÏÞ¶¨´ÊÓÐÒÔϼ¸ÖÖ£ºprivate¡¢ public¡¢ friendly¡¢protectedÆäÖУ¬ public µÄÏÞ¶¨µÄ·¶Î§×î´ó¡£ 10¡¢±»¹Ø¼ü×Ö final /private ÐÞÊεķ½·¨ÊDz»Äܱ»µ±Ç°ÀàµÄ×ÓÀàÖØж¨ÒåµÄ·½·¨¡£
11¡¢JAVA³ÌÐòµÄ»ù±¾ÔªËØÊÇ Àà ¡£
12¡¢ class ÊÇJAVAÓïÑÔÖж¨ÒåÀàʱ±ØÐëʹÓõĹؼü×Ö¡£
13¡¢¶¨ÒåÔÚÀàÖз½·¨Ö®ÍâµÄ±äÁ¿³ÆΪ ³ÉÔ±±äÁ¿ ¡£ 14¡¢·½·¨ÉùÃ÷°üÀ¨ ·½·¨Í· ºÍ ·½·¨Ìå Á½²¿·Ö¡£ 15¡¢·½·¨Í·È·¶¨·½·¨µÄ ·½·¨Ãû £¬ÐÎʽ²ÎÊýµÄÃû×ÖºÍ ÀàÐÍ ¡¢ ·µ»ØÖµ µÄÀàÐͺÍç³ÎÅÏÞÖÆ¡£
16¡¢ ·½·¨Ìå ÓÉ°üÀ¨ÔÚ»¨À¨ºÅÄÚµÄÉùÃ÷²¿·ÖºÍÓï¾ä²¿·Ö×é³É£¬ÃèÊö·½·¨µÄ¹¦ÄÜ¡£
17¡¢ÀàÍ·¶¨ÒåµÄ»ù±¾¸ñʽҪÇóΪ__ÐÞÊηû__ _¡¢__class¹Ø¼ü×Ö_ __¡¢_____ ÀàÃû __ºÍ__ »¨À¨ºÅ __¡£ 18¡¢ ¶ÔÏó ÊÇÖ¸Java³ÌÐòͨ¹ý¹æÔòÒýÇæµ÷Óô˹æÔò°üʱ£¬½«Êý¾Ý´æ´¢ÔÚJavaµÄÀàÖУ¬ÒÔ¶ÔÏóµÄÐÎʽ´«Èë¡£ 19¡¢ÔÚJavaÀà¶ÔÏóµÄ ±à¼´°¿Ú ÖÐÖ±½ÓÊäÈëÐèÒªµ¼ÈëµÄÀàµÄÍê³ÉÀàÃû¡£ 20¡¢ Àà ÊÇJavaµÄºËÐÄÄÚÈÝ£¬ÊÇÓÃÀ´´´½¨¶ÔÏóµÄÄ£°å¡£ 21¡¢ÀàÓÐÁ½ÖÖ»ù±¾³ÉÔ±ÊÇ ·½·¨ ºÍ ³ÉÔ±±äÁ¿ ¡£
22¡¢ Ò»¸öJavaÔ´Îļþ¾ÍÊÇÓÉÈô¸É¸ö Àà ¹¹³ÉµÄ¡£ 23¡¢ Àà ÊdzéÏ󣬶ø ¶ÔÏó ÊǾßÌå¡£
24¡¢.¶ÔÏóµÄ´´½¨¡¢´´½¨¶ÔÏóµÄ¹ý³Ì¾ÍÊÇ ÀàµÄʵÀý»¯ µÄ¹ý³Ì
25¡¢ ¶ÔÏóµÄ´´½¨µÄ²½Öè ¶ÔÏóµÄÉùÃ÷ ¡¢ ¼° ¶ÔÏóµÄʵÀý»¯ ¡£
26¡¢ ʹÓÃnewÔËËã·ûʵÀý»¯Ò»¸öÒѾÉùÃ÷µÄ Àà 27¡¢ÊµÀý»¯Ò»¸ö¶ÔÏóʱ£¬»áͬʱµ÷ÓÃÀàµÄ¹¹Ôì·½·¨¶ÔËü½øÐÐ ¡£
28¡¢ ÀàµÄ ÊÇÌØÊâµÄÀà·½·¨£¬Ëü±ØÐëºÍÀàͬÃû£¬²¢ÇÒ²»ÄÜÓзµ»ØÀàÐÍ£¬Ò²²»ÄÜÓÃvoidÀ´±ê×¢¡£
29¡¢ ¹¹Ôì·½·¨ÊǾßÓÐÌØÊâµØλµÄ·½·¨£¬ ²»¿ÉÒÔµ÷Óù¹Ôì·½·¨¡£
30¡¢Ò»¸öÀàÖпÉÒÔÓжà¸ö
31¡¢ÀàÀïÃæÈç¹ûûÓÐ £¬ÏµÍ³»áµ÷ÓÃĬÈϵĹ¹Ôì·½·¨£¬Ä¬ÈϵĹ¹Ôì·½·¨ÊDz»´øÈκβÎÊýµÄ¡£ 32¡¢°üÖ÷ÒªÀ´½â¾ö µÄÎÊÌâ¡£
33¡¢ ¼ÈÊÇÃüÃû»úÖÆ£¬ÓÖÊǿɼû¶È¿ØÖÆ»úÖÆ¡£
34¡¢javaÓïÑÔµÄÊôÐÔÓë·½·¨µÄÒýÓþùʹÓÃ__ _ÔËËã·û¡£
35¡¢¶¨ÒåÀàʱͨ³£Ê¹Óùؼü×Ö____ £¬ £¬ ___¡£
36¡¢Ð´³ö³ÉÔ±±äÁ¿µÄ¶¨Òå¸ñʽ__ _______¡£
37¡¢¶ÔÏóµÄÉúÃüÖÜÆÚ°üÀ¨Èý¸ö½×¶Î ¡¢ ¡¢ ¡£
38¡¢JavaÖÐÀà³ÉÔ±µÄ·ÃÎÊ¿ØÖÆ·ûÓÐÒÔϼ¸ÖÖ¡¢private, public£¬__ ___, __ ____¡£ÆäÖУ¬__ ______µÄÏÞ¶¨µÄ·¶Î§×î´ó¡£
39¡¢JavaÖÐËùÓÐÀ඼ÊÇÀà__ _µÄ×ÓÀà¡£AppletÀàÊÇϵͳÀà_ __ÀàµÄ×ÓÀ࣬´æÔÚÓÚ_ ___°üÖС£
40¡¢°´×÷ÓÃÓò·ÖÀ࣬±äÁ¿Óоֲ¿±äÁ¿¡¢__ _____¡¢·½·¨±äÁ¿ºÍÒì³£´¦Àí²ÎÊý¡£
41¡¢JAVAÓïÑÔͨ¹ý½Ó¿ÚÖ§³Ö_____ ____¼Ì³Ð£¬Ê¹Àà¼Ì³Ð¾ßÓиüÁé»îµÄÀ©Õ¹ÐÔ¡£
42¡¢JAVAÓïÑÔÖÐ___ ___ÀàÊÇËùÓÐÀàµÄ¸ù¡£ Èý¡¢³ÌÐòÌî¿Õ
1¡¢Çëд³öÏÂÃæ³ÌÐòµÄÔËÐнá¹û¡£ package com.gem.j2SE03; abstract class A { private int x = 100; public A(){ this.print(); }
public abstract void print(); }
class B extends A { private int x = 200; public B(int x){ this.x = x; }
public void print(){
System.out.println(\ } }
public class TestJava { private void mian() { A a = new B(20); } }
³ÌÐòÔËÐнá¹ûΪ£º
2¡¢Çëд³öÏÂÃæ³ÌÐòµÄÔËÐнá¹û¡£ public class Test extends TT{ public void main(String args[]){ Test t = new Test(\ }
public Test(String s){ super(s);
System.out.println(\ }
public Test(){ this(\ } }
class TT{ public TT(){
System.out.println(\ }
public TT(String s){ this();
System.out.println(\ } }
³ÌÐòÔËÐнá¹ûΪ£º
3¡¢ÔĶÁÏÂÁгÌÐò£¬Ð´³ö³ÌÐòÔËÐеĽá¹û£º public class Test {
public static void main (String[] args) {
String s1=new String(\ String s2=\ String s3=\
System.out.println(s1==s2);
System.out.println(s1.equals(s2)); System.out.println(s2==s3);
System.out.println(s2.equals(s3)); String s4=s1;
System.out.println(s1==s4);
System.out.println(s1.equals(s4)); } }
³ÌÐòÔËÐнá¹ûΪ£º
4¡¢public class Test {
private static void printArray(int[] arr) { for(int i=0;i< arr.length;i++) System.out.print(arr[i]+\ System.out.println(\ }
private static void changeValue(int value) { value*=2; }
private static void changeValue(int[] arr) { for(int i=0;i public static void main (String[] args) { int[] arr={1,2,3,4,5}; changeValue(arr[0]); printArray(arr); changeValue(arr); printArray(arr); } } ³ÌÐòÔËÐнá¹ûΪ£º 5¡¢class MyException extends Exception { public MyException(String message) { super(message); } } public class Test { private static void fun1() throws MyException { throw new MyException(\in fun1().\ } private static void fun2() throws MyException { try { fun1(); } catch(NullPointerException ex) { System.out.println(\¡¢\ } finally { System.out.println(\ } } public static void main (String[] args) { try { fun2(); } catch(MyException ex) { System.out.println(\); } catch(Exception ex) { System.out.println(\ } } } ³ÌÐòÔËÐнá¹ûΪ£º 6¡¢ÏÂÃæÊÇÒ»¸öÀàµÄ¶¨Ò壬ÇëÍê³É³ÌÐòÌî¿Õ¡£ public class ___ _______ { int x, y; Myclass ( int £¬ int ) // ¹¹Ôì·½·¨ { x=i; y=j; } } ³ÌÐòÔËÐнá¹ûΪ£º 7¡¢ ÏÂÃæÊÇÒ»¸öÀàµÄ¶¨Ò壬Ç뽫Æä²¹³äÍêÕû¡£ class ___ __ { String name; int age; Student( ___ __ s, int i) { name=s; age=i; } } ³ÌÐòÔËÐнá¹ûΪ£º 8¡¢ÏÂÃæ³ÌÐòµÄ¹¦ÄÜÊÇͨ¹ýµ÷Ó÷½·¨max£¨£©Çó¸ø¶¨µÄÈý¸öÊýµÄ×î´óÖµ£¬Ç뽫Æä²¹³äÍêÕû¡£ public class Class1{ public static void main( String args[] ){ int i1=1234,i2=456,i3=-987; System.out.println(\Èý¸öÊýµÄ×î´óÖµ¡¢\ ); } public static int max(int x,int y,int z) { int temp1,max_value; temp1=x>y?x:y; max_value=temp1>z?temp1:z; return max_value; } } ³ÌÐòÔËÐнá¹ûΪ£º 9¡¢Ð´³öÏÂÁгÌÐòµÄÊä³ö½á¹û public class Test{ public static void main(String[] args){ Count myCount = new Count(); int times = 0; for(int i=0;i<100;i++) increment(myCount , times); System.out.println(¡°count is¡± + myCount.count); System.out.println(¡°time is¡±+ times); } public static void increment(Count c , int times){ c.count++; times++; } } class Count{ public int count; Count(int c){ count =c; } Count(){ count =1; } } ³ÌÐòÔËÐнá¹ûΪ£º 10¡¢ÔĶÁÏÂÁгÌÐò£¬Ð´³ö³ÌÐòÔËÐеĽá¹û£º class Circle { double radius; public Circle(double r){ this.radius=r; } } public class Test{ public static void main(String[] args){ Circle circle1 = new Circle(1); Circle circle2 = new Circle(2); System.out.println(\swap:circle1 =\ swap(circle1,circle2); System.out.println(\swap:circle1 = \ } public static void swap(Circle x , Circle y){ System.out.println(\swap: x = \ y = \ Circle temp = x; x = y; y = temp; System.out.println(\ x = \= \ } } ³ÌÐòÔËÐнá¹ûΪ£º 11¡¢ÏÂÁгÌÐòµÄÊä³ö½á¹ûÊÇʲô£¿ public class Foo{ static int i=0; static int j=0; public static void main(String[] args){ int i=2; int k=3; int j=3; System.out.println(¡°i + j is ¡±+ i + j); k = i +j; System.out.println(¡°k is ¡±+k); System.out.println(¡°j is ¡±+ j); } } ³ÌÐòÔËÐнá¹ûΪ£º 12¡¢ÔËÐÐÀàCµÄÊä³ö½á¹ûÊÇʲô£¿ class A{ public A(){ System.out.println(\default constructor of A y is invoked\} } class B extends A{ public B(){ System.out.println(\default constructor of B is invoked\ } } public class C{ public static void main(String[] args){ B b = new B(); } } ³ÌÐòÔËÐнá¹ûΪ£º 13¡¢ÔĶÁÏÂÁгÌÐòд³öÊä³ö½á¹û: class A{ String s=\ void show(){ System.out.println(s); } } class B extends A{ String s=\ void show() { System.out.println(s); } } public class TypeConvert{ public static void main(String args[]){ B b1; B b2=new B(); A a1,a2; a1=(A)b2; a2=b2; System.out.println(a1.s); a1.show(); System.out.println(a2.s); a2.show(); b1=(B)a1; System.out.println(b1.s); b1.show(); System.out.println(b2.s); b2.show(); } } ³ÌÐòÔËÐнá¹ûΪ£º 14¡¢ÔĶÁÏÂÁгÌÐò£¬Ð´³ö³ÌÐòÔËÐеĽá¹û£º class A { int i, j; public A(){ this.i=0; this.j=0; } public void print(){ System.out.println (\} class B extends A{ int m; public B (int i, int j, int m){ super (); this.m=m; } public void print (){System.out.println (\ m=\} public class C{ public static void main(String args[]){ A a=new A(); B b=new B(1, 2, 3); a.print (); b.print (); } }} ³ÌÐòÔËÐнá¹ûΪ£º 15¡¢ÔĶÁÏÂÁгÌÐò£¬Ð´³ö³ÌÐòÔËÐеĽá¹û£º class Demo { public void test () {System.out.println (\public void test (int i) {System.out.println (i);} public void test (int a, int b) {System.out.println (a+b);} } public class Test { public static void main(String args[]){ Demo de=new Demo(); de.test(); de.test(5); de.test(6,8); } } ³ÌÐòÔËÐнá¹ûΪ£º 16¡¢ÔĶÁÏÂÁгÌÐò£¬Ð´³ö³ÌÐòÔËÐеĽá¹û£º class Cube{ int width; int height; int depth; Cube(int x,int y,int z){ this.width=x; this.height=y; this.depth=z; } public int vol(){ return width*height*depth;}} public class UseCube { public static void main(String[] args) { Cube a=new Cube(3,4,5); System.out.println(\³¤¶È=\ System.out.println(\Ìå»ý=\ } } ³ÌÐòÔËÐнá¹ûΪ£º 17¡¢ÔĶÁÏÂÁгÌÐò£¬Ð´³ö³ÌÐòÔËÐеĽá¹û£º class SuperClass{ int x=10; int y=20; public void show(){ System.out.println(\ÎÒÊǸ¸ÀàµÄ³ÉÔ±·½·¨£¡\} class SubClass extends SuperClass{ int z=30; } public class JC { public static void main(String[] args) { SuperClass father=new SuperClass(); SubClass child=new SubClass(); System.out.println(\¸¸ÀàSuperClass³ÉÔ±±äÁ¿¡¢\ System.out.println(\×ÓÀàSubClass³ÉÔ±±äÁ¿¡¢\ } } ³ÌÐòÔËÐнá¹ûΪ£º 18¡¢ÔĶÁÏÂÁгÌÐò£¬Ð´³ö³ÌÐòÔËÐеĽá¹û£º public class Class431 { public static void main(String[] args) { int a = 3; char m='a'; prt(\ prt(\ prt(\ prt(\ } static float test1(char x, int y) { int z = x+y; return z; } static float test2() { int a = 60; for (int i = 8; i < 12; i++) a= a+i; prt(\ return a; } static void prt(String s) { System.out.println(s); } } ³ÌÐòÔËÐнá¹ûΪ£º 19¡¢ÔĶÁÏÂÁгÌÐò£¬Ð´³ö³ÌÐòÔËÐеĽá¹û£º public class Class432 { static int i=123; public static void main (String[] args) { int i=456; System.out.println(\ÖÐµÄ i=\ m1( ); m2( ); } static void m1( ) { int i=789; System.out.println(\ÖÐµÄ i=\ } static void m2( ) { System.out.println(\Àà±äÁ¿ i=\ i+=6; System.out.println(\¼Ó 6 ºóµÄÀà±äÁ¿ i=\ } } ³ÌÐòÔËÐнá¹ûΪ£º 20¡¢ÏÂÃæ³ÌÐòµÄ½á¹ûÊÇʲô£¿ class Tester { int var; Tester(double var) { this.var = (int)var; } Tester(int var) { this(\ } Tester(String s) { this(); System.out.println(s); } Tester(){ System.out.println(\ } public static void main(String[] args) Tester t = new Tester(5); } } ³ÌÐòÔËÐнá¹ûΪ£º 21¡¢ÒÔÏ´úÂëµÄÔËÐнá¹ûÊÇ class Base{ int i; Base(){ add(1); System.out.println(i); } void add(int v){ i+=v; System.out.println(i); } void print(){ System.out.println(i); } } class MyBase extends Base{ MyBase(){ add(2); } { void add(int v){ i+=v*2; System.out.println(i); } } public class TestClu { public static void main(String[] args) { go(new MyBase()); //System.out.println(); } static void go(Base b){ b.add(8); //b.print(); } } ³ÌÐòÔËÐнá¹ûΪ£º 22¡¢ÒÔÏ´úÂëµÄÊä³ö½á¹ûÊÇÏÂÁÐÄĸöÑ¡Ï class Base{Base(){ System.out.println(\ } } public class Checket extends Base{ Checket(){ System.out.println(\ super(); } public static void main(String argv[]){ Checket c = new Checket(); // super(); } } ³ÌÐòÔËÐнá¹ûΪ£º 23¡¢¸ø¶¨ÏÂÃæµÄ´úÂ룬ÄĸöÑ¡ÏîÔÚÌæ´ú\ºó¿ÉÒÔ±»±àÒë²¢ÇҸıä±äÁ¿oakµÄÖµ£¿ class Base{ static int oak=99; } public class Doverdale extends Base{ public static void main(String argv[]){ Doverdale d = new Doverdale(); d.amethod(); } public void amethod(){ //Here } } ³ÌÐòÔËÐнá¹ûΪ£º ËÄ¡¢ÎÊ´ðÌâ 1¡¢Ê²Ã´ÊǼ̳Ð?ʲôÊǸ¸Àà?ʲôÊÇ×ÓÀà?¼Ì³ÐµÄÌØÐԿɸøÃæÏò¶ÔÏó±à³Ì´øÀ´Ê²Ã´ºÃ´¦?ʲôÊǵ¥Öؼ̳Ð?ʲôÊǶàÖؼ̳Ð? 2¡¢Ê²Ã´ÊÇÀà³ÉÔ±£¬Ê²Ã´ÊÇʵÀý³ÉÔ±£¿ËûÃÇÖ®¼äÓÐʲôÇø±ð£¿ 3¡¢³éÏóÀàºÍ½Ó¿ÚÓÐʲôÇø±ð£¿ 4¡¢ÀàÓë¶ÔÏóµÄ¹ØϵÊÇʲô£¿ 5¡¢JavaµÄ·ÃÎÊÏÞ¶¨ÐÞÊηûÓм¸ÖÖ£¬¸÷×ԵķÃÎÊȨÏÞÊÇʲô£¿ 6¡¢Ì¸Ì¸final, finally, finalizeµÄÇø±ð¡£ 7¡¢Anonymous Inner Class (ÄäÃûÄÚ²¿Àà) ÊÇ·ñ¿ÉÒÔextends(¼Ì³Ð)ÆäËüÀ࣬ÊÇ·ñ¿ÉÒÔimplements(ʵÏÖ)interface(½Ó¿Ú)? 8¡¢abstract classºÍinterfaceÓÐʲôÇø±ð? Îå¡¢ÅжÏÌâ 1¡¢ÀàÌåÖÐprivateÐÞÊεıäÁ¿ÔÚ±¾ÀàÖÐÄÜ·ÃÎÊ£¬ÀàÉú³ÉµÄ¶ÔÏóÒ²ÄÜ·ÃÎÊ¡£( ) 2¡¢Ò»¸öÀàÖУ¬Ö»ÄÜÓµÓÐÒ»¸ö¹¹ÔìÆ÷·½·¨¡£( ) 3¡¢³éÏóÀàÖв»¿ÉÒÔÓзdzéÏóµÄ·½·¨¡£ £¨ £© 4¡¢Èç¹û½«Ò»¸ö¶ÔÏóÇ¿ÖÆÀàÐÍת»»ÎªÒ»¸ö²»¼æÈݵÄÀàÐÍ£¬½«Òý·¢NullPointerException Òì³£¡£ £¨ £© 5¡¢JavaÖÐObjectÀàÊÇ×²ãµÄÀà¡£ £¨ £© 6 ³ÌÐòÔÚ±àÒëͨ¹ýÒÔºó£¬ÈÔÈ»¿ÉÄܳöÏÖÔËÐÐʱ´íÎóºÍÂß¼´íÎó¡£ £¨ £© 7 ¿ÉÒÔͨ¹ýjavacÀ´ÔËÐÐÒ»¸öJava Application¡£ £¨ £© 8 ¿ÉÒÔÔÚ×ÓÀ๹Ô캯ÊýÖÐͨ¹ýthis¹Ø¼ü×Öµ÷ÓûùÀàµÄ¹¹Ô캯Êý¡£ £¨ £© 9 JavaÓïÑÔÊÇIBM¹«Ë¾Éè¼ÆµÄÒ»ÖÖÃæÏò¶ÔÏó³ÌÐòÉè¼ÆÓïÑÔ¡££¨ £© 10 Ò»¸öUnicode×Ö·ûÕ¼4¸ö×Ö½Ú¡£ £¨ £© 11 ÔÚÑ»·Óï¾äÖУ¬Ê¹ÓÃcontinue;Óï¾ä¿ÉÒÔÌø³öÑ»·¡£ £¨ £© 12 ÔÚJava ApplicationÖÐÈç¹ûûÓж¨Òåmain()·½·¨£¬Ôò³ÌÐò²»ÄܱàÒë¡£ £¨ £© 13¡¢Java ÓïÑÔµÄÄ£¿éÖ»ÓÐÀà¡££¨ £© 14¡¢¶¨Òå·½·¨Ê±·½·¨Ãû¿ÉÒÔÊÇÈκαêʶ·û¡££¨ £© 15¡¢·½·¨ÌåÖÐÖÁÉÙÓÐÒ»Ìõ return Óï¾ä¡££¨ £© 16¡¢Èç¹ûÐèÒª¿ÉÒÔÔÚ·½·¨ÖÐÔÙÉùÃ÷Ò»¸ö·½·¨¡££¨ £© 17¡¢·½·¨¶¨ÒåÓï¾ä void x( int a,int b ) { return (a-b); }ÊÇÕýÈ·µÄ¡££¨ £© 18¡¢·½·¨ÄÚ¶¨ÒåµÄ±äÁ¿ÊÇ¿ÉÒÔÔÚ·½·¨ÍâʹÓõġ££¨ £© 19¡¢Ö»ÓÐÖ±½Óµ÷ÓÃ×ÔÉíµÄ·½·¨²Å½ÐµÝ¹é·½·¨¡££¨ £© 20¡¢Java ÖÐÔÊÐíÁ½·½·¨Í¬Ãû£¬Ö»ÒªËüÃDzÎÊýµÄÀàÐÍ»ò¸öÊý²»Í¬¾ÍÐС££¨ £© 21¡¢Ã¿¸öÓ¦ÓóÌÐò¶¼±ØÐëÒªÓÐ main ·½·¨¡£ £¨ £© 22¡¢·½·¨¶¨ÒåÓï¾ä float x( int a,int b ) { return (a-b); }ÊÇÕýÈ·µÄ¡££¨ £© 23¡¢¶ÔÏó¿ÉÒÔ¸³Öµ£¬Ö»ÒªÊ¹Óø³ÖµºÅ£¨µÈºÅ£©¼´¿É£¬Ï൱ÓÚÉú³ÉÁËÒ»¸ö¸÷ÊôÐÔÓ븳ֵ¶ÔÏóÏàͬµÄжÔÏó¡££¨ £© 24¡¢ÓеÄÀඨÒåʱ¿ÉÒÔ²»¶¨Òå¹¹Ôì·½·¨£¬ËùÒÔ¹¹Ôì·½·¨²»ÊDZØÐèµÄ¡££¨ £© 25¡¢À༰ÆäÊôÐÔ¡¢·½·¨¿ÉÒÔͬʱÓÐÒ»¸öÒÔÉϵÄÐÞÊηûÀ´ÐÞÊΡ££¨ £© Áù¡¢±à³ÌÌâ 1¡¢Ñ§ÉúÓÐÐÕÃû(name)ºÍ³É¼¨(score)ÐÅÏ¢¡£³É¼¨ÓпÆÄ¿(course)ºÍ·ÖÊý(grade)ÐÅÏ¢¡£Ñ§ÉúÀàµÄgetResult·½·¨ÏÔʾÊä³ö³É¼¨ÐÅÏ¢£¬setData·½·¨ÊµÏÖ³õʼ»¯Ñ§ÉúÐÅÏ¢¡£±àдѧÉúÀà(Student)ºÍ³É¼¨Àà(Score)£¬²¢²âÊÔ¡£ 2¡¢ ¶¨ÒåÒ»¸öѧÉúÀ࣬°üº¬Èý¸öÊôÐÔ£¨Ñ§ºÅ£¬ÐÕÃû£¬³É¼¨£©¾ùΪ˽Óеģ¬·Ö±ð¸øÕâÈý¸öÊôÐÔ¶¨ÒåÁ½¸ö·½·¨£¬Ò»¸öÉèÖÃËüµÄÖµ£¬ÁíÒ»¸ö»ñµÃËüµÄÖµ¡£È»ºóÔÚÒ»¸ö²âÊÔÀàÀïÊÔ×ŵ÷Óᣠ3¡¢±àд³ÌÐò£¬Ä£ÄâÒøÐÐÕË»§¹¦ÄÜ¡£ÒªÇóÈçÏ¡¢ ÊôÐÔ¡¢Õ˺š¢´¢»§ÐÕÃû¡¢µØÖ·¡¢´æ¿îÓà¶î¡¢×îСÓà¶î¡£·½·¨¡¢ ´æ¿î¡¢È¡¿î¡¢²éѯ¡£¸ù¾ÝÓû§²Ù×÷ÏÔʾ´¢»§Ïà¹ØÐÅÏ¢¡£Èç´æ¿î²Ù×÷ºó£¬ÏÔʾ´¢»§ÔÓÐÓà¶î¡¢½ñÈÕ´æ¿îÊý¶î¼°×îÖÕ´æ¿îÓà¶î£»È¡¿îʱ£¬Èô×îºóÓà¶îСÓÚ×îСÓà¶î£¬¾Ü¾øÊտ²¢ÏÔʾ¡°ÖÁÉÙ±£ÁôÓà¶îXXX¡± 4¡¢±à³ÌʵÏÖ¡¢ÒԵ绰PhoneΪ¸¸ÀࣨÀý¡¢µç»°Óб¾»úºÅÂë¡¢´òµç»°¡¢½Óµç»°µÈÊôÐԺ͹¦ÄÜ£¬µ±È»»¹ÓÐһЩÆäËüµÄÌØÐÔ£©£¬Òƶ¯µç»°MobilephoneºÍ¹Ì¶¨µç»°FixedphoneΪÁ½¸ö×ÓÀ࣬²¢Ê¹Òƶ¯µç»°ÊµÏÖ½Ó¿Ú¡¢¿ÉÒƶ¯Moveable¡£¹Ì¶¨µç»°ÓÖÓÐ×ÓÀà¡¢ÎÞÉþµç»°Cordlessphone¡£Éè¼Æ²¢¶¨ÒåÕ⼸¸öÀ࣬Ã÷È·ËüÃǵļ̳йØϵ£¬¶¨Òå×ÓÀàʱ¸ø³ö×ÓÀàÓбðÓÚ¸¸ÀàµÄÐÂÌØÐÔ¡£ 5¡¢ÉùÃ÷²âÊÔÀà¡¢ÉùÃ÷PhoneÀàµÄÊý×飨º¬5¸öÔªËØ£©£¬Éú³ÉÎå¸ö¶ÔÏó´æÈëÊý×é¡¢ÆäÖжþ¸öPhoneÀàµÄ¶ÔÏó¡¢Ò»¸öMobilephoneÀàµÄ¶ÔÏó¡¢Ò»¸öFixedphoneÀàµÄ¶ÔÏóºÍÒ»¸öCordlessphoneÀàµÄ¶ÔÏ󣬴òÓ¡Êä³öÿ¸ö¶ÔÏóµÄij¸ö³ÉÔ±±äÁ¿¡£½«Ò»¸ö¸¸ÀàµÄÒýÓÃÖ¸ÏòÒ»¸ö×ÓÀà¶ÔÏó£¬ÓÃÕâ¸öËÜÐͺóµÄ¶ÔÏóÀ´µ÷ÓÃij¸ö·½·¨ÊµÏÖ¶à̬ÐÔ¡£ 6¡¢Éè¼ÆÒ»¸ö¶¯ÎïÀ࣬Ëü°üº¬¶¯ÎïµÄ»ù±¾ÊôÐÔ¡£ÀýÈçÃû³Æ¡¢´óС¡¢ÖØÁ¿µÈ£¬²¢Éè¼ÆÏàÓ¦µÄ¶¯×÷£¬ÀýÈçÅÜ¡¢Ìø¡¢×ߵȡ£ 7¡¢Éè¼ÆÒ»¸ö³¤·½ÐÎÀ࣬³ÉÔ±±äÁ¿°üÀ¨³¤ºÍ¿í¡£ÀàÖÐÓмÆËãÃæ»ýºÍÖܳ¤µÄ·½·¨£¬²¢ÓÐÏàÓ¦µÄset·½·¨ºÍget·½·¨ÉèÖúͻñµÃ³¤ºÍ¿í¡£±àд²âÊÔÀà²âÊÔÊÇ·ñ´ïµ½Ô¤¶¨¹¦ÄÜ¡£ÒªÇóʹÓÃ×Ô¶¨ÒåµÄ°ü¡£ 8¡¢´´½¨Ò»¸öPeopleÀ࣬¶¨Òå³ÉÔ±±äÁ¿Èç±àºÅ¡¢ÐÕÃû¡¢ÐÔ±ð¡¢ÄêÁ䣻¶¨Òå³ÉÔ±·½·¨¡°»ñµÃ±àºÅ¡±¡¢¡°»ñµÃÐÕÃû¡±¡¢¡°»ñµÃÄêÁ䡱µÈ£¬ÔÙ´´½¨PeopleÀàµÄ¶ÔÏó¡£ 9¡¢Éè¼ÆPointÀàÓÃÀ´¶¨ÒåƽÃæÉϵÄÒ»¸öµã£¬Óù¹Ô캯Êý´«µÝ×ø±êλÖᣱàд²âÊÔÀ࣬ÔÚ¸ÃÀàÖÐʵÏÖPointÀàµÄ¶ÔÏó¡£ 10¡¢±àд³ÌÐò˵Ã÷¾²Ì¬³ÉÔ±ºÍʵÀý³ÉÔ±µÄÇø±ð¡£ 11£®Éè¼Æ¹ÍÔ±EmployeeÀ࣬¼Ç¼¹ÍÔ±µÄÇé¿ö£¬°üÀ¨ÐÕÃû¡¢Äêн¡¢ÊܹÍʱ¼ä£¬ÒªÇó¶¨ÒåMyDateÀà×÷ΪÊܹÍʱ¼ä£¬ÆäÖаüÀ¨¹¤×÷µÄÄê¡¢Ô¡¢ÈÕ£¬²¢ÓÃÏàÓ¦µÄ·½·¨¶ÔEmployeeÀà½øÐÐÉèÖᣱàд²âÊÔÀà²âÊÔEmployeeÀà¡£ÒªÇóʹÓÃ×Ô¼ºµÄ°ü¡£ 12¡¢±àдһ¸öѧÉúµÄÀ࣬ҪÇóÓÐÐÕÃû¡¢ÄêÁä¡¢ÐËȤ¡¢°à¼¶±àºÅºÍÒ»¸ö½ÌÔ±À࣬ҪÇóÓÐÐÕÃû¡¢½ÌÊڿγ̡¢×¨Òµ·½Ïò¡¢½ÌÁ䣬Éè¼ÆÒ»¸öÖ÷·½·¨£¬ÒªÇóÔÚÖ÷·½·¨Öе÷ÓÃÕâÁ½¸öÀà¡£ 13¡¢.ÉùÃ÷PatientÀà±íʾÔÚÃÅÕïÖеIJ¡ÈË,´ËÀà¶ÔÏóÓ¦°üÀ¨name(a string),sex(a char),age(an integer),weight(a float),allergies(a boolean).ÉùÃ÷´æÈ¡¼°Ð޸ķ½·¨.ÔÚÒ»¸öµ¥¶ÀµÄ ÀàÖÐ,ÉùÃ÷²âÊÔ·½·¨,²¢Éú³ÉÁ½¸öpatient¶ÔÏó,ÉèÖÃÆä״̬²¢½«ÐÅÏ¢ÏÔʾÔÚÆÁÄ»ÉÏ¡£ 14¡¢ÉùÃ÷²¢²âÊÔÒ»¸ö¸ºÊýÀà,Æä·½·¨°üÀ¨toString()¼°¸ºÊýµÄ¼Ó,¼õ,³ËÔËËã¡£ 15¡¢¶¨ÒåÒ»StudentÀà:°üÀ¨ÐÕÃûµÄÊôÐÔÖµ£¬StaticsÀà: 16¡¢¶¨ÒåÒ»¸öÀ࣬³ÉÔ±±äÁ¿ÊÇStringÊý×és£¬³ÉÔ±·½·¨ÓÐsµÄsetterºÍgetter£¬ÏÔʾsÖÐʹÓÃ×Ö·û´®ÔªËصķ½·¨¡£ 17¡¢ ¹¹ÔìÒ»¸öÀàÀ´ÃèÊöÆÁÄ»ÉϵÄÒ»¸öµã£¬¸ÃÀàµÄ¹¹³É°üÀ¨µãµÄxºÍyÁ½¸ö×ø±ê£¬ÒÔ¼°Ò»Ð©¶Ôµã½øÐеIJÙ×÷£¬°üÀ¨¡¢È¡µÃµãµÄ×ø±êÖµ£¬¶ÔµãµÄ×ø±ê½øÐи³Öµ£¬±àдӦÓóÌÐòÉú³É¸ÃÀàµÄ¶ÔÏ󲢶ÔÆä½øÐвÙ×÷¡£ 18¡¢ÓÃÁ½¸ö·½·¨´òÓ¡³ö 200 ÒÔÄÚµÄÈ«²¿ËØÊý£¨Ò»¸öÊÇ main()·½·¨£¬Ò»¸öÊÇרÃÅÅж¨Ò»¸öÊýÊÇ ·ñΪËØÊýµÄ·½·¨£©¡£ 19¡¢ÒÑÖª·Æ²¨ÄÇÆõÊýÁеÄÊýѧ±í´ïʽΪ£º fibonacci(n)=n, n=0,1; fibonacci(n)=fibonacci(n-1)+fibonacci(n-2), n¡Ý2£» Óõݹ鷽·¨¼ÆËã FibonacciÐòÁУ¬²¢´òÓ¡³öÆäÇ° 15ÏîµÄÖµ¡£ 20¡¢±àдһ¸ö Application£¬ÆäÖаüº¬Èý¸öͬÃû·½·¨ mySqrt()£¬ËüÃǶ¼Ö»ÓÐÒ»¸ö²ÎÊý£¬²ÎÊýµÄ ÀàÐÍ·Ö±ðΪ int ÐÍ¡¢float ÐÍºÍ double ÐÍ£¬ËüÃǵŦÄܾùΪ·µ»Ø²ÎÊýµÄƽ·½¸ù£¬·µ»ØÖµµÄÀà ÐÍÓë²ÎÊýµÄÀàÐÍÏàͬ¡£ÔÚ·½·¨ main( ) Öе÷ÓÃÉÏÃæµÄÈý¸ö·½·¨²¢Êä³ö½á¹û¡£ 21¡¢±à³ÌÉú²ú 100 ¸ö 1µ½ 6 Ö®¼äµÄËæ»úÊý£¬Í³¼Æ 1µ½ 6 ÿ¸öÊý³öÏֵĸÅÂÊ¡£