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1. (10*(2-8)+10)/(5-5*2)ÔÚJAVAÓïÑÔÖУ¬ÉÏÃæµÄ±í´ïʽ¼ÆËã½á¹ûΪ£¨Ñ¡Ò»Ï A¡¢-10 B¡¢10 C¡¢30 D¡¢-32
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2. ÔĶÁÏÂÃæµÄJava´úÂë int[] arr; int n = 5; n = n * 2 +1; arr = new int[n];
System.out.println(arr.length); ³ÌÐòÊä³öµÄ½á¹ûÊÇ£¨Ñ¡Ò»Ï A¡¢5 B¡¢8 C¡¢10 D¡¢11
½â´ð¹ý³Ì£º n = n*2+1; ¼ÆËã³ön=11;arr = new int[11]
3. ÔÚ Java ÓïÑÔÖÐ , ÏÂÃæ ( ) תÒåÐòÁбíʾ»»ÐС££¨Ñ¡Ò»Ï A¡¢\\a B¡¢\\n C¡¢\\r D¡¢\\f
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4.
ÔÚ JAVA±à³ÌÖУ¬Java±àÒëÆ÷»á½«JavaÔ´´úÂë³ÌÐòת»»Îª£¨Ñ¡Ò»Ï A¡¢×Ö½ÚÂë B¡¢¿ÉÖ´ÐдúÂë C¡¢»úÆ÷´úÂë
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5.
ÔÚ JavaÓïÑÔÖУ¬ÏÂÁдúÂëÆ¬¶ÎµÄÊä³ö½á¹ûÊÇ£¨Ñ¡Ò»Ï[7,21,92] float a = 50; int b = 4; float c = a/b; System.out.println(c);
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A¡¢0 B¡¢12 C¡¢12.0 D¡¢12.5
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ÔÚJava ÓïÑÔÖУ¬ÏÂÁдúÂëµÄÊä³ö½á¹ûÊÇ£¨Ñ¡Ò»Ï public static void main(String[] args) { int i=5, j=10; do { if(i>j) { break; } j--; i++; }while(j!=i);
System.out.println( i + \} A¡¢8,7 B¡¢9,6 C¡¢7,6 D¡¢7,8
½â´ð¹ý³Ì£º 1.i=5,j=10 2.i=6,j=9 3.i=7,j=8 4.i=8,j=7 7.
ÔÚJava ÓïÑÔÖж¨ÒåÁËÈçϱäÁ¿£ºdouble x=10.0, y=3.0; int z=2;ÏÂÃæÇ¿ÖÆ×ª»»·û¶¼·¢ÉúÁË×÷Ó㬳ýÁË£¨Ñ¡Ò»Ï A¡¢(int)(x+y/z); B¡¢(double)(x/y); C¡¢(int)x; D¡¢(int)(y+z);
½â´ð¹ý³Ì£º x/y½á¹ûÊÇdoubleÀàÐÍµÄ Ç¿ÖÆ×ª»»Ã»·¢Éú×÷Óà 8.
ÔÚJAVA±à³ÌÖУ¬Ô´´úÂëÎļþµÄÀ©Õ¹ÃûΪ£¨Ñ¡Ò»Ï A¡¢.class B¡¢.java C¡¢.com
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ÔÚJAVAÓïÑÔÖÐ
ÃèÊöA£º¡®8¡¯Óë8ÊÇÏàͬµÄ ÃèÊöB£º¡®£¤¡¯µÄÊý¾ÝÀàÐÍÊÇchar ÏÂÃæµÄÑ¡Ïî( )ÊÇÕýÈ·µÄ£¨Ñ¡Ò»Ï A¡¢Á½¸öÃèÊö¶¼ÊÇÕýÈ·µÄ B¡¢Ö»ÓÐÃèÊöAÊÇÕýÈ·µÄ C¡¢Á½¸öÃèÊö¶¼ÊÇ´íÎóµÄ D¡¢Ö»ÓÐÃèÊöBÊÇÕýÈ·µÄ
½â´ð¹ý³Ì£º¡®8¡¯µÄÊý¾ÝÀàÐÍΪchar£»8µÄÊý¾ÝÀàÐÍΪint
public static void showInfo(int a,int b){ a++; b++; }
public static void main(String[] args) { int a = 5; int b = 10;
System.out.println(a + \ showInfo(a,b);
System.out.println(a + \}
A¡¢5,10 5,10 B¡¢5,10 6,11 C¡¢5,10 4,11 D¡¢5,10 5,11
½â´ð¹ý³Ì£ºa,b×÷ΪֵÀ´´«µÝ£¬Öµ´«µÝÊDz»¸Ä±äÔÀ´ÊôÐÔµÄÖµµÄ
11. ÔÚJAVAÓïÑÔÖУ¬( )Óï¾ä¿ÉÒÔ½áÊø±¾´ÎÑ»·¶ø²»»á½áÊøÕû¸öÑ»·¡££¨Ñ¡Ò»Ï[148]
A¡¢next B¡¢continue C¡¢switch D¡¢break
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break£º½áÊøÑ»·£¬Ìø³öÕû¸öÑ»·
continue£ºÌø³ö±¾´ÎÑ»·£¬½øÈëÏÂÒ»´ÎÑ»·
ÔÚjavaÖе¥ÒýºÅÒýµÄÊý¾Ý ÊÇcharÀàÐÍµÄ Ë«ÒýºÅÒýµÄÊý¾Ý ÊÇStringÀàÐ͵Ä
10. ÔÚJAVAÓïÑÔÖÐ, ÏÂÁдúÂëµÄÔËÐнá¹ûÊÇ£¨Ñ¡Ò»Ï[50£¬56]
µÚ 3 Ò³ ¹² 45 Ò³
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12. ÔÚJAVAÓïÑÔÖУ¬3/5µÄÖµÊÇ£¨Ñ¡Ò»Ï[114,128]
A¡¢1 B¡¢0 C¡¢2 D¡¢0.6
½â´ð¹ý³Ì£º
13. ÔÚJavaÓïÑÔÖУ¬5/3µÄÖµÊÇ£¨Ñ¡Ò»Ï
A¡¢1 B¡¢¨C1 C¡¢2 D¡¢1.67
½â´ð¹ý³Ì£º
14. ÔÚJavaÓïÑÔÖУ¬¼ÙÉèÒÔÏÂËùÓбäÁ¿¾ùΪÕûÐÍ£¬ÔòÏÂÁдúÂëÖ´ÐкócµÄÖµÊÇ£¨Ñ¡Ò»Ï
a=2;b=5;b++;c=a+b; A¡¢5 B¡¢6 C¡¢7 D¡¢8
½â´ð¹ý³Ì£ºb++;c=a+b; ´Ëʱb==6
15. ÔÚJavaÓïÑÔÖУ¬¾¹ýÈçÏÂÔËËãºó£¬numµÄֵΪ£¨Ñ¡Ò»Ï[49£¬66£¬154£¬163]
int num = 0; num = 2>3?0:1; A¡¢0 B¡¢1 C¡¢2 D¡¢3
½â´ð¹ý³Ì£ºÈýÄ¿ÔËËã·û£¬¶ÔÓÚÌõ¼þ±í´ïʽb?x:y£¬ÏȼÆËãÌõ¼þb£¬È»ºó½øÐÐÅжϡ£Èç¹ûbµÄֵΪtrue£¬¼ÆËãxµÄÖµ£¬ÔËËã½á¹ûΪxµÄÖµ£»·ñÔò£¬¼ÆËãyµÄÖµ£¬ÔËËã½á¹ûΪyµÄÖµ¡£
16. ÔÚJAVAÓïÑÔÖУ¬¾²Ì¬±äÁ¿Ó㨠£©ÐÞÊεġ££¨Ñ¡Ò»Ï
A¡¢static B¡¢final C¡¢abstract D¡¢interface
5,3¶¼ÊÇintÀàÐ͵Ä,int/int ½á¹ûĬÈÏΪint,»áÔì³É¾«¶È¶ªÊ§ ±ãÓÚÀí½â £º 5/3=1¡¡2
3,5¶¼ÊÇintÀàÐ͵Ä,int/int ½á¹ûĬÈÏΪint,»áÔì³É¾«¶È¶ªÊ§ ±ãÓÚÀí½â£º 3/5=0¡¡3
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17. ÔÚJavaÓïÑÔÖУ¬ÄÜÕýÈ·±íʾaºÍbͬʱΪÕý»òͬʱΪ¸ºµÄ±í´ïʽÊÇ£¨Ñ¡Ò»Ï[30£¬48]
A¡¢(a >=0 || b >= 0) && (a < 0 || b < 0) B¡¢a * b > 0
C¡¢(a + b > 0) && (a + b <= 0)
D¡¢(a >= 0 && b >= 0) && (a < 0 && b < 0)
½â´ð¹ý³Ì£ºÌâÄ¿µÄ¿ÉÒÔ»»ÖÖ·½Ê½Àí½â£¬µ±aºÍbͬʱΪÕý»òͬʱΪ¸ºÊ±£¬ÏÂÃæ±í´ïʽΪtrue ²¢ ÓмÙΪ¼Ù »ò ÓÐÕæÎªÕæ
A¡¢$95 B¡¢_wii C¡¢3psp D¡¢break;
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abstract default if private this do implements protected throw break import public throws else instanceof return transient case extends
Boolean byte short int long float double char try catch finally final interface static void strictfp volatile class native
super while
constfor new switch null
continue goto package synchronized
19. ÔÚJAVAÓïÑÔÖУ¬ÏÂÁÐ( )ÊǺϷ¨µÄ±êʾ·û£¨Ñ¡Á½Ï
A¡¢Main B¡¢p234 C¡¢4x D¡¢short
20. ÔÚJAVAÓïÑÔÖÐ,ÏÂÁÐJAVAÓïÑÔ´úÂëµÄÑ»·ÌåÖ´ÐеĴÎÊýÊÇ£¨Ñ¡Ò»Ï
int n=2; while(n == 0){
System.out.println(n);
18. ÔÚJavaÓïÑÔÖУ¬ÏÂÁУ¨ £©ÊǺϷ¨µÄ±êʾ·û£¨Ñ¡Á½Ï[19£¬45£¬96£¬97£¬110£¬145£¬150]
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n--; } A¡¢0 B¡¢1 C¡¢2 D¡¢3
½â´ð¹ý³Ì£ºn==2,whileÑ»·ÅжÏÌõ¼þΪn==0,¹ÊûÓнøÑ»·ÌåÄÚ
21. ÔÚJavaÓïÑÔÖУ¬ÏÂÁбäÁ¿¶¨ÒåºÍ¸³Öµ´íÎóµÄÊÇ£¨Ñ¡Ò»Ï
A¡¢short i=5;int j=i; B¡¢char c = \ C¡¢float f = 'c'+1; D¡¢float i=5;double d=i;
½â´ð¹ý³Ì£ºÔÚjavaÖе¥ÒýºÅÒýµÄÊý¾Ý ÊÇcharÀàÐ͵Ä
22. ÔÚJavaÓïÑÔÖУ¬ÏÂÁбí´ïʽµÄÔËËãµÄ½á¹ûÊÇ£¨Ñ¡Ò»Ï
10/2 +5£» A¡¢5 B¡¢7 C¡¢10 D¡¢12
½â´ð¹ý³Ì£º%È¡ÓàÔËËã·û 5=5
23. ÔÚJavaÓïÑÔÖУ¬ÏÂÁдúÂëµÄÊä³ö½á¹ûÊÇ£¨Ñ¡Ò»Ï[35]
public static void main(String[] args) { int[] num={10,20,51,40,50}; System.out.println(num[2]); } A¡¢40 B¡¢50 C¡¢51 D¡¢60
½â´ð¹ý³Ì£ºÔÚjavaÖÐÊý×é½Ç±ê´Ó0¿ªÊ¼¡£Num[2]ΪÊý×éÖеÚÈý¸öÔªËØ
24. ÔÚJAVAÓïÑÔÖÐ,ÏÂÁдúÂëµÄÊä³ö½á¹ûÊÇ£¨Ñ¡Ò»Ï
public static void main(String args[]){ int i,j=0;
for(i=1;i<10;i++){ if(i%4==0)
Сд×ÖĸcµÄASCIIÂëÊÇ 99
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continue; j =i; }
System.out.println(i + \} A¡¢10,9 B¡¢3,6 C¡¢10,8 D¡¢4,10
½â´ð¹ý³Ì£º1-1 2-2 3-3 4-3 5-5 6-6 7-7 8-7 9-9 10Ñ»·½áÊø forÑ»·µÄÖ´ÐÐ˳ÐòÓÃÈçϱí´ïʽ£º for(expression1;expression2;expression3) {
expression4; }
Ê×ÏÈÖ´Ðбí´ïʽexpression1£¨Ò»°ãΪ³õʼ»¯Óï¾ä£©£»ÔÙÖ´ÐÐexpression2£¨Ò»°ãΪÌõ¼þÅжÏÓï¾ä£©£¬ÅжÏexpression1ÊÇ·ñ·ûºÏexpression2µÄÌõ¼þ£»Èç¹û·ûºÏ£¬ÔòÖ´ÐÐexpression4£¬·ñÔò£¬Í£Ö¹Ö´ÐУ»×îºóÖ´ÐÐexpression3¡£
int a = 1, sum = 0; while (a< 3){ sum = sum + a; a++; }
System.out.println(sum); A¡¢2 B¡¢3 C¡¢4
D¡¢ÒÔÉ϶¼²»¶Ô
½â´ð¹ý³Ì£ºµ±a==1ʱ£¬;sum==1,a==2;
26. ÔÚJAVAÓïÑÔÖÐ,ÏÂÁдúÂëµÄÔËÐнá¹ûÊÇ£¨Ñ¡Ò»Ï
public static void main(String args[]) { int stuAge[] = {18,22,26}; int i, avgAge = 0; for(i = 0; i < 3; i++){ avgAge += stuAge[i] / 3; }
System.out.println( avgAge );
µ±a==2ʱ£¬sum=3,a==3; µ±a==3ʱ£¬Ñ»·½áÊø
25. ÔÚJavaÓïÑÔÖУ¬ÏÂÁдúÂëµÄÔËÐнá¹ûÊÇ£¨Ñ¡Ò»Ï
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} A¡¢0 B¡¢9 C¡¢11 D¡¢21
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27. ÔÚJAVAÓïÑÔÖУ¬ÏÂÁдúÂëÔËÐеĽá¹ûÊÇ£¨Ñ¡Ò»Ï
int a=1,b=3,c=5; if(a>b) if(b>c) c=a+b; else c=a*b;
System.out.println( a + \A¡¢1 3 5 B¡¢1 3 4 C¡¢1 3 6 D¡¢1 3 3
½â´ð¹ý³Ì£ºÒòΪa
28. ÔÚJavaÓïÑÔÖУ¬ÏÂÁжÔÓÚ×Ö·ûÊý×éµÄ¶¨Òå²¢¸³ÖµÕýÈ·µÄÊÇ£¨Ñ¡Ò»Ï
A¡¢char[ ] name = new char[4]; B¡¢char[ ] name = {'S','V','S','E'}; C¡¢char[4] name = \D¡¢char[4] name = {'S','V','S','E'};
½â´ð¹ý³Ì£ºÌâĿҪÇó×Ö·ûÊý×éµÄ¶¨Òå²¢¸³Öµ£¬AÏîÖ»ÊǶ¨Ò壬CÏîÔÚjavaÖв»Ê¹Óã¬DÏî²»ÄÜÔÙÉùÃ÷ÊǶ¨Ò峤¶È£¬²Î¿¼AÏî¡£
29. ÔÚJavaÓïÑÔÖУ¬ÏÂÁйØÓÚ·½·¨µÄÓŵ㣬˵·¨´íÎóµÄÊÇ£¨Ñ¡Ò»Ï
A¡¢Í¨¹ýʹÓ÷½·¨£¬¿ÉÒÔÌṩ³ÌÐò¿ª·¢µÄЧÂÊ B¡¢Í¨¹ýʹÓ÷½·¨£¬¿ÉÒÔÌá¸ß´úÂëµÄÖØÓÃÐÔ C¡¢Í¨¹ýʹÓ÷½·¨£¬Ê¹µÃ³ÌÐòµÄά»¤±äµÃ¸´ÔÓ D¡¢Í¨¹ýʹÓ÷½·¨£¬Ê¹µÃ³ÌÐòµÄ±äµÃ¼ò¶ÌºÍÇåÎú
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30. (5 > 10) && (3 < 8)µÄ½á¹ûΪ£¨Ñ¡Ò»Ï
A¡¢·Ç0 B¡¢true C¡¢0
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D¡¢false
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31. double x,y; [ͬ46]
x = 2; y = x + 3 / 2; System.out.println(y); Êä³ö½á¹ûÓ¦¸ÃΪ£¨Ñ¡Ò»Ï A¡¢3.5 B¡¢3.0 C¡¢2.0 D¡¢3
½â´ð¹ý³Ì£º3/2 int/int¾«¶È¶ªÊ§ ½á¹ûΪ1
yµÄÊý¾ÝÀàÐÍΪdouble
32. if(Ìõ¼þ){ÓïÃû}ºÍif(Ìõ¼þ)Óï¾äµÄÇø±ðÊÇ£¨Ñ¡Ò»Ï[103]
A¡¢Ã»ÓÐÇø±ð
B¡¢Ò»¸ö¿ÉÒÔÖ´ÐжàÌõÓï¾ä£¬ÁíÒ»¸ö¿ÉÒÔÖ´ÐÐÒ»ÌõÓï¾ä C¡¢¿ÉÒÔÖ´ÐжàÌõÓï¾ä D¡¢²»¿ÉÒÔÖ´ÐжàÌõÓï¾ä
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33. ifÓï¾äµÄ¿ØÖÆÌõ¼þ£¨Ñ¡Ò»Ï
A¡¢Ö»ÄÜÓùØÏµ±í´ïʽ
B¡¢Ö»ÄÜÓùØÏµ±í´ïʽ»òÂß¼±í´ïʽ C¡¢Ö»ÄÜÓÃÂß¼±í´ïʽ D¡¢¿ÉÒÔÓÃÈκαí´ïʽ
½â´ð¹ý³Ì£º¹ØÏµ±í´ïʽ£º¹ØÏµÔËËã·ûÁ¬½ÓÆðÀ´µÄʽ×Ó ¡£Èça+b>c+d a==b 34. int a, b;
int count=0;
for(a=2,b=5;a
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Âß¼±í´ïʽ: ÓÃÂß¼ÔËËã·û½«±í´ïʽ¼ä½ÓÆðÀ´¡£È磺a&&b a||b
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35. int a[] = {3,9,5,6,4};
System.out.println(a[4]) ;
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if(a>5&&a<5){
System.out.println(\}Êä³ö½á¹ûÊÇ£¨Ñ¡Ò»Ï A¡¢ok B¡¢false C¡¢Ã»ÓÐÊä³ö D¡¢true
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37. int i = 0, x = 0;
do {
if (i % 5 == 0) x++; }
while (i < 20); System.out.println(x); Êä³ö½á¹ûÊÇ£¨Ñ¡Ò»Ï A¡¢4 B¡¢10 C¡¢0
D¡¢ÒÔÉ϶¼²»ÊÇ
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38. Java ÓïÑÔÖÐij³ÌÐòÔ±±àдÁËÈçÏ while Ñ»·´úÂë , ÇëÎʸÃÑ»·Ö´ÐÐ ( int a=5,b=15; while(a
System.out.println(b-a); a++; b--;
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} A¡¢1 B¡¢5 C¡¢10 D¡¢ÎÞÊý±é
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39. Java ÓïÑÔÖÐÓÐÈçÏ´úÂë,ÏÂÁÐxµÄ¶¨ÒåÖÐ,¿ÉÒÔʹÉ϶δúÂëÊä³ö 100 µÄÓУ¨Ñ¡Á½Ï
switch(x){
case 100:System.out.println(\ case 110:System.out.println(\}
A¡¢byte x=100; B¡¢float x=100; C¡¢char x='d'; D¡¢long x=100;
½â´ð¹ý³Ì£ºswitch µÄ²ÎÊýÖ»ÄÜÊÇbyte,char,short,intÐ굀 dµÄASCIIÂëΪ100
40. Java ÖУ¬byteÊý¾ÝÀàÐ͵Äȡֵ·¶Î§ÊÇ£¨Ñ¡Ò»Ï
A¡¢-256 ÖÁ 255 B¡¢-255 ÖÁ 255 C¡¢-128 ÖÁ 127 D¡¢-127 ÖÁ 128
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byte(×Ö½Ú) 8 -128 - 127 shot(¶ÌÕûÐÍ) 16 -32768 - 32768 int(ÕûÐÍ) 32 -2147483648-2147483648
long(³¤ÕûÐÍ) 64 -9233372036854477808-9233372036854477808 float(¸¡µãÐÍ) 32 -3.40292347E+38-3.40292347E+38
double(Ë«¾«¶È) 64 -1.79769313486231570E+308-1.79769313486231570E+308 char(×Ö·ûÐÍ) 16 ¡® \