更多"下面的程序执行后,屏幕上应显示______。 public clas"的相关试题:
[单项选择]阅读下面程序
public class Test3
public static void main(String args[])
int x=3, y=4, z=5;
String s="xyz";
System.out.primln(s+x+y+z);
程序运行的结果是
A. xyzl2
B. xyz345
C. xyzxyz
D. 12xyz
[单项选择]阅读下面程序
public class Test implements Runnable
public static void main(String[]args)
_______________________________________;
t. start( );
public void mR( )
System. out. println("Hello!");
}
在程序下画线处填入正确选项是
A. Test t=flew Test()
B. Thread t=new Thread();
C. Thread t=new Thread(new Test());
D. Test t=new Thread();
[单项选择]下面的程序执行后,屏幕上显示的应是 public class Exam{ public static void main(String[]args){ char char1[]={’t’,’e’,’s’,’t’}; char char2[]={’t’,’e’,’S’,’t’,’1’}; String s1=new String(char1); String s2=new String(char2,0,4); System.out.println(s1.equals(s2)); } }
A. true
B. false
C. test
D. 编译错误
[单项选择]下面程序执行后,baz的值应是______。
public class Test9
public static void main(String[] args)
int index = 1;
int fox[] = new int [3];
iht bar = fox [index];
int baz = bar + index;
System.out.println(baz);
A. 0 B. 1 C. 2 D. 编译错误
[单项选择]下面的程序执行后,屏幕上显示的应是( )。
public class Exam
public static void main(String[]args)
char char1[]='t','e','s','t';
char char2[]='t','e','s','t','l';
String s1=newString(charl);
String s2=newString(char2,0,4);
System.out.println(s1.equals(s2));
A. true
B. false
C. test
D. 编译错误
[单项选择]下面程序的输出结果是
public class Test
public static void main(String[] args)
int[]array=2,4,6,8,10;
int size=6;
int result=-1:
try
for(int i=0;i<size&&result==-1;i++)
if(array[i]==20)result=i;
catch(ArithmeticException e)
System.out.println("Catch---1");
catch(ArrayIndexOutOfBoundsException e)
System.out.println("Catch---2");
catch(Exception e)
System.out.println("Catch---3");
A. Catch---1 B) Catch一--2 C) Catch---3 D) 以下都不对
[单项选择]
阅读下面程序
public class Test implements Runnable{
public static void main(String[]args){
_______________________________________;
t. start( );
}
public void mR( ){
System. out. println("Hello!");
}
}
在程序下画线处填入正确选项是()
A. Test t=flew Test()
B. Thread t=new Thread();
C. Thread t=new Thread(new Test());
D. Test t=new Thread();
[单项选择]下面程序段的输出结果是
public class Test
public static void main(String args[])
int[] a=new int[11];
int[] p=new int[4];
int k=5;
for(int i=1;i<=10;i++)
a[i]=i;
for(int i=l;i<=3;i++)
p[i]=a[i*i];
for(int i=1;i<=3;i++)
k=k+p[i]*2;
System.out.println(k);
A. 37
B. 31
C. 33
D. 35
[单项选择]下面程序段的输出结果是
public class Test
public static void main(String args[])
int[]a=new int[11];
int[]p=new int[4];
int k=5;
for(int i=1;i<=10;i++)
a[i]=i;
for(int i=1;i<=3;i++)
p[i]=a[i*i]
for(int i=1;i<=3;i++)
k=k+p[i]*2;
System.out.println(k);
A. 37
B. 31
C. 33
D. 35
[单项选择]下面程序段的输出结果是
public class Test
public static void main(String args[])
int a,b;
for(a=1, b=1; a<=100; a++)
if(b>=10)break;
if (b%2==1)
b+=2;
continue;
System.out.println(
A. ;
[单项选择]下面程序段的输出结果为
public class Test
public static void main(String args[])
boolean a,b,c;
a=(3<5);
b=(a==true);
System.out.println("a="+a+"b="+b);
c=(b==false);
System.out.println("b="+b+"c="+c);
A) a=true b=false
b=true c=false
B) a=true b=false
b=true c=true
C) a=true b=true
b=true c=false
D) a=false b=false
b=true c=false
[单项选择]下面程序段的输出结果是
public class Test
public static void main(String args[])
int n=5,sum=0;
while(n>0)
sum+=n;
--n;
System.out.println("sum is"+sum);
A. sum is 14
B. sum is 15
C. sum is 10
D. sum is 5