Java Quiz

JVM is platform independent.

• True

• False

Output of this code is:

        int a = 10, b = 017, c = 0X3A;

        System.out.println (a + "," + b +"," + c);

   

• 10, 15, 58

• 10, 17, 13

• 10, 17, 0

• 10, 017, 0X3A

Output of this code is:

        int x = 10;

        int y = 5;

        System.out.println(++x+(++y));

 

• 15

• 16

• 17

• 18

Output of this code is:

        int x = 7;

        int y = 7;

        int z = x & y;

        System.out.println("z = " + z);

   

• 14

• 0

• 1

• 7

Output of this code is:

class Sample1{

    public static void main(String [] args){

        System.out.println("Inside main method line1");

    }

    static {

        System.out.println("Inside class line1");

    }

}

• Inside main method line1

• Inside class line1

• Inside main method line1

  Inside class line1

• Inside class line1

  Inside main method line1

Output of this code is:

Sample s = new Sample();

System.out.println(s instanceof Sample);

• True

• False

• Compile Error

• Runtime Error

In which of the cases, an object is eligible for Garbage Collection?

(a) Demo d;

(b) Demo d = new Demo();

(c) Demo d = new Demo(); d = null;

• a , c

• b

• b,c

• a,b,c

String is immutable

• False

• True

Which of the following Class is the parent class of any type of exception class?

• Error

• Exception

• Throwable

• RuntimeException

Which of the following is an checked exception

• SQLException

• ArithmeticException

• NumberFormatException

• NullPointerException