1. ÒÔÏÂÄÜ×÷ΪcharÀàÐ͵Ä×ÖÃæÖµµÄÓУº£¨ £©
¡¡A ¡°e¡±
¡¡B ¡®f¡¯
¡¡C ¡®\u12¡¯
¡¡D ¡®\u0012¡¯
2. byte±äÁ¿µÄÈ¡Öµ·¶Î§ÊÇ£º£¨ £©
A 0 ¨C 65535
B -128 ¨C 127
C -256 ¨C 255
D 0 ¨C 32767
3. ÒÔÏÂÑ¡ÏîÖÐÕýÈ·µÄÓУº£¨ £©
A int i = 32;
B float f = 45.32;
C double d=3.2;
4. ¼Ù¶¨xºÍyΪdoubleÐÍ£¬Ôò±í´ïʽx=2,y=x+3/2µÄÖµÊÇ£¨D£©
A 3.500000
B 3
C 2.000000
D 3.000000
5. ÏÂÁжÔÓÚ>>ºÍ>>>²Ù×÷·ûÃèÊöÕýÈ·µÄÊÇ£¿£¨ £©
A µ±×óÃæµÄ²Ù×÷ÊýÊÇÕýÊýʱ£¬ >> ºÍ >>> ½á¹ûÏàͬ¡£
B (-1 >> 1)µÄ½á¹ûÊÇ0¡£
C (-1 >>> 1) µÄ½á¹ûÊÇ -1¡£
D Ö»ÓÐÔÚÓÒÃæµÄ²Ù×÷Êý´óÓÚµÈÓÚ1ʱ£¬ >>> ²Å»á·µ»Ø¸ºÊý¡£
6. ÓÐÈçÏÂÒ»¶Î´úÂ룺
1£©public class ReturnIt{
2) returnType methodA(byte x, double y){
3) return x/y*2;
4) }
5) }
ÔÚµÚ2ÐÐÖУ¬·½·¨methodAµÄÓÐЧ·µ»ØÀàÐÍreturnTypeÓ¦¸ÃÊÇ£¿£¨ £©
A int
B byte
C short
D double
7. ¸ù¾ÝÒÔϳÌÐòÑ¡ÔñÕýÈ·´ð°¸£º£¨ £©
public class Test{
static int total = 10;
public static void main(String args []) {
new Test();
}
public Test (){
System.out.println(¡°In test¡±);
System.out.println(this);
int temp = this.total;
if (temp > 5) {
System.out.println(temp);
}
}
}
A ±àÒë³ö´í
B ÔËÐÐʱÓÐÒì³£
C ±àÒëÔËÐж¼ÕýÈ·
8. ÒÔÏÂswitch±í´ïÓï¾äÕýÈ·µÄÊÇ£º£¨ £©
A public void switchTest (char c){switch(c){¡}}
B public void switchTest(long c){switch(c){¡}}
C public void switchTest(byte c){switch(c){¡}}
D public void switchTest(double c){switch(c){¡}}
9. int i=1,j=10;
do{
if(i++>¨Cj)
continue;
}while(i<5);
ÉÏÃæµÄ´úÂëÖ´Ðкó£¬iºÍjµÄÖµ¸÷ÊǶàÉÙ£¿£¨ £©
A i=6 j=5
B i=5 j=5
C i=6 j=4
D i=5 j=6