Compilation will fail.
Compilation will succeed and the program will print “0”
Compilation will succeed and the program will print “1”
Compilation will succeed and the program will print “2”
第1题:
下列代码的执行结果是public class Test{ public int aMethod(){ static int i=0; i++; System.out.println(i); } public static void main(String args[]){ Test test= new Test(); test. aMethod(); }}
A.编译错误
B.0
C.1
D.运行成功,但不输出
第2题:
下列程序输出结果为( )。public class test { public static void main(String args[]) { int a=0; outer: for(int i=0;i<2;i++) { for(int j=0;j<2;j++) { if(j>i) { continue outer; } a++; } } System.out.println(a); }}
A.0
B.2
C.3
D.4
第3题:
下列程序输出结果为( )。 public class test { public static void main (String args[]) { int a=0; outer:for(int i=0;i<2;i + +) { for(int j=0;j<2;j+ +) { if(j>i) { continue outer; } a+ +; } } System.out.println(a); } }
A.0
B.2
C.3
D.4
第4题:
下列代码中,将引起一个编译错误的行是( )。 1)public class Test{ 2)int m,n; 3)public Test{} 4)public Test(int a){m=a;) 5)public static void main(String args[]){ 6)Test tl,t2; 7)int j,k; 8)j=0;k=0; 9)tl=new Test; 10)t2=new Test(j,k); 11)} 12)}
A.第3行
B.第5行
C.第6行
D.第l0行
第5题:
下列语句执行后,i的值是( )。 public class Test { public static void main(String[ ] args) { int i =0; for(int j=10; j>5&&i<5; j-=3,i+=2) i=i+j; System.out.println(i); } }
A.8
B.9
C.10
D.12
第6题:
( 30 )在程序的下划线处应填入的选项是
public class Test _________{
public static void main(String args[]){
Test t = new Test();
Thread tt = new Thread(t);
tt.start();
}
public void run(){
for(int i=0;i<5;i++){
system.out.println( " i= " +i);
}
}
}
A ) implements Runnable
B ) extends Thread
C ) implements Thread
D ) extends Runnable
第7题:
public class Test { public static void leftshift(int i, int j) { i<<=j; } public static void main(String args[]) { int i = 4, j = 2; leftshift(i, j); System.out.printIn(i); } } What is the result?()
第8题:
public class Test { public int aMethod() { static int i = 0; i++; return i; } public static void main (String args[]) { Test test = new Test(); test.aMethod(); int j = test.aMethod(); System.out.println(j); } } What is the result?()
第9题:
public class test { public static void add3 (Integer i){ int val = i.intValue ( ); val += 3; i = new Integer (val); } public static void main (String args [ ] ) { Integer i = new Integer (0); add3 (i); system.out.printIn (i.intValue ( ) ); } } What is the result?()
第10题:
Compilation succeeds.
An error at line 2 causes compilation to fail.
An error at line 9 causes compilation to fail.
An error at line 10 causes compilation to fail.
An error at line 11 causes compilation to fail.
第11题:
0
1
2
Compilation fails.
第12题:
2
4
8
16
The code will not compile.
第13题:
在下面程序的下画线处应填入的选项是 public class Test______{ public static void main(String args[]) { Test t=new Test(); Thread tt=new Thread(t); tt.start(); } public void run() { for(int i=0;i<5;i++) System.out.println("i="+i); } }
A.implements Runnable
B.extends Thread
C.implements Thread
D.extends Runnable
第14题:
下列程序执行后,j的值是( )。 public class Test { public static void main(String args[]) { int j=1; for(int i=7;i>0;i-=2) j*=2; System.out.println(j); } }
A.15
B.1
C.32
D.16
第15题:
下列代码的执行结果是( )。
public class Test{
public int aMethod( ){
static int i=0;
i++;
System.out.println(i):
}
public static void main (String args[]){
Trest test=new Test ( );
test aMethod( ):
}
}
A.编译错误
B.0
C.1
D.运行成功,但不输出
B.
C.
D.
第16题:
下列代码的执行结果是 public class Test{ public int aMethod( ) { static int i=0; i+ +; System.out.println(i); } public static void main(String args[ ]){ Test test = new Test( ); test.aMethod( ); } }
A.编译错误
B.0
C.1
D.运行成功,但不输出
第17题:
A. 0
B. 1
C. 2
D.3
第18题:
public class Test { public static void main(String Args[]) { int i =1, j = 0; switch(i) { case 2: j +=6; case 4: j +=1; default: j +=2; case 0: j +=4; } System.out.println(“j =” +j); } } What is the result? ()
第19题:
public class test( public int aMethod()[ static int i=0; i++; return I; ) public static void main (String args){ test test = new test(); test.aMethod(); int j = test.aMethod(); System.out.printIn(j); ] } What is the result?()
第20题:
public class test ( private static int j = 0; private static boolean methodB(int k) ( j += k; return true; ) public static void methodA(int i)( boolean b: b = i < 10 | methodB (4); b = i < 10 || methodB (8); ) public static void main (String args[])( methodA (0); system.out.printIn(j); ) ) What is the result?()
第21题:
interface foo { int k = 0; } public class test implements Foo ( public static void main(String args) ( int i; Test test = new test (); i= test.k; i= Test.k; i= Foo.k; ) ) What is the result? ()
第22题:
0
2
4
6
9
13
第23题:
Compilation will fail.
Compilation will succeed and the program will print “0”
Compilation will succeed and the program will print “1”
Compilation will succeed and the program will print “2”
第24题:
The program prints “0”
The program prints “4”
The program prints “8”
The program prints “12”
The code does not complete.