SJ9923J7

7. WAP to implement interface in java

interface Area
{
final static float pi=3.14F;
float compute(float x,float y);
}
class Rectangle implements Area
{
public float compute(float x,float y)
{
return (xy);
}
}
class Circle implements Area
{
public float compute(float x,float y)
{
return(pix*x);
}
}
class Test
{
public static void main(String args[])
{
Rectangle rect=new Rectangle();
Circle cir=new Circle();
Area area;area=rect;
System.out.println("Area of Rectangle="+area.compute(10,20));
area=cir;
System.out.println("Area of Cirlce="+area.compute(10,10));
}
}