1. What will be the output of the following Java code?

class Char {
public static void main(String args[]) {
char ch1, ch2;
ch1 = 88; // code for X
ch2 = 'Y';
System.out.print("ch1 and ch2: ");
System.out.println(ch1 + " " + ch2);
}
} 

2. Which of these statements are incorrect?

3. How is Date stored in database?

4. What is the function of javap command?

5. Which of the following are not java modifiers?

6. Which of these is necessary condition for automatic type conversion in Java?

7. Find the output of the following code.

        import java.util.*;

        class Collection_iterators 

        {

            public static void main(String args[]) 

            {

                LinkedList list = new LinkedList();

                list.add(new Integer(2));

                list.add(new Integer(8));

                list.add(new Integer(5));

                list.add(new Integer(1));

                Iterator i = list.iterator();

                Collections.reverse(list);

    	    Collections.sort(list);

                while(i.hasNext())

    	        System.out.print(i.next() + " ");

            }

        }

8. What is the default value of String variable?

9. Find the output of the following code.

        class box 

        {

            int width;

            int height;

            int length;

        } 

        class main

        {

            public static void main(String args[]) 

            {        

                 box obj = new box();

                 obj.width = 10;

                 obj.height = 2;

                 obj.length = 10;

                 int y = obj.width * obj.height * obj.length; 

                 System.out.print(y);

            } 

        }

10. Find the output of the following code.

        class bool_operator 

        {

            public static void main(String args[]) 

            {    

                 boolean a = true;

                 boolean b = !true;

                 boolean c = a | b;

     	     boolean d = a & b;

                 boolean e = d ? b : c;

                 System.out.println(d + " " + e);

            } 

        }

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

        class recursion 

        {

            int fact(int n) 

            {

                int result;

                if (n == 1)

                    return 1;

                result = fact(n - 1) * n;

                return result;

            }

        } 

        class Output 

        {

            public static void main(String args[]) 

            {

                recursion obj = new recursion() ;

                System.out.print(obj.fact(5));

            }

        }

12. Find the output of the following code.

        class leftshift_operator 

        {

            public static void main(String args[]) 

            {        

                 byte x = 64;

                 int i;

                 byte y; 

                 i = x << 2;

                 y = (byte) (x << 2);

                 System.out.print(i + " " + y);

            } 

        }

13. Which of these data types is used to store command line arguments?

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

        class static_out 

        {

            static int x;

     	static int y;

            void add(int a, int b)

            {

                x = a + b;

                y = x + b;

            }

        }    

        public class static_use 

        {

            public static void main(String args[])

            {

                static_out obj1 = new static_out();

                static_out obj2 = new static_out();   

                int a = 2;

                obj1.add(a, a + 1);

                obj2.add(5, a);

                System.out.println(obj1.x + " " + obj2.y);     

            }

       }

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