1. Find the output of the following code.

        class output 

        {

            public static void main(String args[])

            { 

               StringBuffer s1 = new StringBuffer("Quiz");

               StringBuffer s2 = s1.reverse();

               System.out.println(s2);

            }

        }

2.  Which variables are created when an object is created with the use of the keyword 'new' and destroyed when the object is destroyed?

3. Which of these is correct about passing an argument by call-by-value process?

4. Which of these is returned by “greater than”, “less than” and “equal to” operators?

5. Which of these is an incorrect array declaration?

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

7. What will be the output of the following Java program?

        class recursion 

        {

            int func (int n) 

            {

                int result;

                result = func (n - 1);

                return result;

            }

        } 

        class Output 

        {

            public static void main(String args[]) 

            {

                recursion obj = new recursion() ;

                System.out.print(obj.func(12));

            }

        }

8. What will be the output of the following Java program?

        class Output 

        {

             public static void main(String args[]) 

            {

                double x = 2.0;  

                double y = 3.0;

                double z = Math.pow( x, y );

                System.out.print(z);

            }

        }

9. Find the output of the following code.

        class array_output 

        {

            public static void main(String args[]) 

            {

                int array_variable [] = new int[10];

    	    for (int i = 0; i < 10; ++i) 

                {

                    array_variable[i] = i;

                    System.out.print(array_variable[i] + " ");

                    i++;

                }

            } 

        }

10. Which constructor creates an empty string buffer with the specified capacity as length.

11. What is the value returned by function compareTo() if the invoking string is less than the string compared?

12. Find the output of the following code.

import java.util.Scanner;

class ThisKeyword {
  private int a = 4;
  private int b = 1;

  void getSum(int a, int b) {
    this.a = a;
    this.b = b;
    System.out.println(this.a + this.b);
  }
}

public class Main {
  public static void main(String args[]) {
    ThisKeyword T = new ThisKeyword();
    T.getSum(3, 5);
  }
}

13. Find the output of the following program.

public class Solution{
       public static void main(String[] args){
               int[]  x = {120, 200, 016};
               for(int i = 0; i < x.length; i++){
                        System.out.print(x[i] + “ “);
               }                   
       }
}

14. What will be the output of the following Java code snippet?

    class abc

    {

        public static void main(String args[])

        {

            if(args.length>0)

            System.out.println(args.length);

        }

    }

15. What will be the output of the following Java program?

        class recursion 

        {
            int func (int n) 
            {
                int result;
                if (n == 1)
                    return 1;
                result = func (n - 1);
                return result;
            }
        } 
        class Output 
        {
            public static void main(String args[]) 
            {
                recursion obj = new recursion() ;
                System.out.print(obj.func(5));
            }
        }