String stored in Heap memory 

In java all class variable are instance variable

Which keyword is used for inheriting a class?

In which extension in Hibernate is used to store database table configuration?

Deduce the output of the following code:

public class Test{

     public static void main(String []args){

         int x=4;

        System.out.println(x++);

     }

}

public class j{

public static void main(String args[]){

StringBuilder sb= new StringBuilder("StringBuilder is mutable");

System.out.println(sb.size());

}

}

What is the output of the following Java code?

public class loop

{

public static void main(String[] args)

{

int a=5, b;

for(b=0; b<=a; b++);

{

System.out.print(b);

}

}

}

What is the output of the following Java code?

import java.util.*;

public class Abekus {

public static void main(String[] args)

{

int[] i = new int[5];

System.out.println(i[2]);

}

}

Why are generics used in programming?