Vivekquiz3

class output {

public static void main(String args[])

{

double a, b,c;

a = 4.0/0;

b = 0/3.0;

c=0/0.0;

System.out.println(a);

System.out.println(b);

System.out.println(c);

}

}

• Infinity

• Nan

• 0.0

• All

class increment {

public static void main(String args[])

{

int g = 4;

System.out.print(++g * 8);

}

}

• 40

• 32

• 8

• 4

class output {

public static void main(String args[])

{

try

{

System.out.println("Tata");

}

finally

{

System.out.println("Bye Bye");

}

catch(Exception e)

{

System.out.println("See you");

}

}

}

• Tata

• Bye Bye

• See you

• Error

class output {

public static void main(String args[])

{

String c = "Hello i love java";

boolean var;

var = c.startsWith("hello");

System.out.println(var);

}

}

• True

• 0

• 1

• false

Which of the following is a superclass of every class in Java?

• Abstract class

• Interface

• ArrayList

• Object class

Which of these keywords are used for the block to be examined for exceptions?

• try

• catch

• throw

• throws

interface calculate

{

int VAR = 0;

void cal(int item);

}

class display implements calculate

{

int x;

public void cal(int item)

{

if (item<2)

x = VAR;

else

x = item * item;

}

}

class interfaces

{

 

public static void main(String args[])

{

display[] arr=new display[3];

 

for(int i=0;i<3;i++)

arr[i]=new display();

arr[0].cal(0);

arr[1].cal(1);

arr[2].cal(2);

System.out.print(arr[0].x+" " + arr[1].x + " " + arr[2].x);

}

}

• 0 1 2

• 0 2 4

• 0 1 4

• 0 0 4

class output {

public static void main(String args[])

{

int a=5;

int b=10;

first:

{

second:

{

third:

{

if(a==b>>1)

break second;

}

System.out.println(a);

}

System.out.println(b);

}

}

}

• 5

• 10

• 5 10

• 10 5

Which fuction of pre defined class thread is used to check

weather current thread being checked is still running?

• join()

• isAlive();

• Alive()

• isRunning()

class output {

public static void main(String args[])

{

int x,y,z;

x=0;

y=1;

x=y=z=8;

System.out.println(x);

}

}

• 8

• 0

• 1

• 24