/*************************************************************************

# File Name: SimpleInheritance.java

# Author:

# Mail:

# Created Time: 2016年11月12日 星期六 18时11分34秒

************************************************************************/

class A{

int i,j;

void showij(){

System.out.println("i and j :"+i+" "+j);

}

}

class B extends A{

int k ;

void showk(){

System.out.println("k : "+k);

}

void sum(){

System.out.println("i+j+k = "+(i+j+k));

}

}

public class SimpleInheritance{

public static void main(String args[]){

A superOb = new A();

B subOb = new B();

superOb.i = 10;

superOb.j = 20;

System.out.println("contents of superOb:");

superOb.showij();

System.out.println();

subOb.i = 7;

subOb.j = 8;

subOb.k = 9;

System.out.println("Contents of subOb:");

subOb.showij();

subOb.showk();

System.out.println();

System.out.println("Sum of i,j and k is ");

subOb.sum();

}

}