34.WAP to implement the concept of inheritance in java.

class Base
{
int a,b;
int sum(int x,int y)
{
a=x;
b=y;
return(a+b);
}
}
class Der extends Base
{
int c;
int mul(int g,int h,int i)
{
a=g;
b=h;
c=i;
return(a*b*c);
}
}
class TestBase
{
public static void main(String args[])
{
Base b=new Base();
Der d=new Der();
System.out.println("sum is"+b.sum(2,3));
System.out.println("mul is"+d.mul(2,3,4));
}
}