9.2 What is Inheritance.java

class Calc
{
	public int add(int n1, int n2)
	{
		return n1+n2;
	}
	public int sub(int n1, int n2)
	{
		return n1-n2;
	}
}


public class AdvCalc extends Calc
{
	public int multi(int n1, int n2)
	{
		return n1*n2;
	}
	public int div(int n1, int n2)
	{
		return n1/n2;
	}
}


public class Demo
{
	public static void main(String a[]) 
	{
//		Calc obj=new Calc();
		AdvCalc obj=new AdvCalc();
		int r1=obj.add(4, 5);
		int r2=obj.sub(7,3);
		int r3=obj.multi(5,3);
		int r4=obj.div(15,4);
		
		System.out.println(r1+" "+r2);
		
	}
}