Which of the following keywords are used to define a lower bounded wildcard?

Which Java package contains all the event handling interfaces?

public class operators {

public static void main(String[] args)

{

int a = 20, b = 10, c = 0;

a = b++ + c;

System.out.println(a);

}

}

Which of the following is not true?

What are the uses of the final keyword in Java?

Predict the output of the following Java program:

class Abekusparent {}

class Abekuschild extends Abekusparent {

public static void main(String args[]) {

Abekusparent a = new Abekuschild();

System.out.println(a instanceof Abekuschild);

}

}

Find the output of the following Java code:

class Abekus {
public static void main(String[] args)
{ char ch[][] = { { 'a', 'b', 'g' }, { 'c', 'd', 'e', 'f' } }; for (int i = 0; i < 2; i++) { for (int j = 0; j < ch[i].length; j++) System.out.print(ch[i][j] + " "); } } }

Predict the output of the following Java code:

public class Abekus {
public static void main(String[] args) throws InterruptedException
{
String S = new String("Abekus");
S = null;
System.gc();
Thread.sleep(500);
System.out.println("Main()");
}
protected void finalize() {
System.out.println("Finalize()");
}
}

import java.util.*;

    class result 

    {

        public static void main(String args[]) 

        {

            HashMap obj = new HashMap();

            obj.put("A", new Integer(1));

            obj.put("A", new Integer(3));

            obj.put("B", new Integer(2));

            obj.put("B", new Integer(4));

            obj.put("C", new Integer(8));

            obj.put("C", new Integer(8));

            obj.put("D", new Integer(7));

            obj.put("D", new Integer(9));

            obj.put("E", new Integer(4));

            obj.put("E", new Integer(5));

            obj.put("F", new Integer(6));   

   obj.put("F", new Integer(6));

            System.out.print(obj.toString());

        }

    }