Program to demonstrate multiple Inheritence

//Program to demonstrate multiple Inheritence
//Program by Ahlam Ansari

interface Area
{
    final static float pi=3.14F;
    float compute();
}

class Shape
{
       
    public String display()
    {
        return("Calculating the area of CIRCLE....");
       
    }
}

class Circle extends Shape implements Area
{
    float radius;
    Circle(float x)
    {
        radius = x;
    }
    public float compute()
    {
        return (pi*radius*radius);
    }
}

class MultipleLevel
{
    public static void main(String ahlam[])
    {

        Circle c=new Circle(10.0f);
        Area ar=c;
        System.out.println(c.display() + "\n " + ar.compute()+" square.cm");
    }
}


/*
C:\Users\Ahlam\Google Drive\My Lectures\Fall\OOPM\Programs>javac MultipleLevel.java

C:\Users\Ahlam\Google Drive\My Lectures\Fall\OOPM\Programs>java MultipleLevel
Calculating the area of CIRCLE....
314.0 square.cm

C:\Users\Ahlam\Google Drive\My Lectures\Fall\OOPM\Programs>
 */