package javarefence.ninth.introducingclasses.introducingmethods.charter870;
abstract class Figure {
double dim1;
double dim2;
Figure(double a,double b){
dim1=a;
dim2=b;
}
abstract double area();
}
package javarefence.ninth.introducingclasses.introducingmethods.charter870;
public class Rectangle extends Figure {
Rectangle(double a,double b){
super(a,b);
}
//@Override
public double area() {
// TODO Auto-generated method stub
return dim1*dim2;
}
}
package javarefence.ninth.introducingclasses.introducingmethods.charter870;
public class Triangle extends Figure {
Triangle (double a,double b){
super(a,b);
}
public double area(){
return dim1*dim2/2;
}
}
package javarefence.ninth.introducingclasses.introducingmethods.charter870;
public class AbstractArea {
public static void main(String[] args) {
// TODO Auto-generated method stub
// Figure f=new Figure();
Rectangle r= new Rectangle(9,6);
Triangle t= new Triangle(12,16);
Figure figureRefence;
figureRefence=r;
System.out.println(figureRefence.area());
figureRefence=t;
System.out.println(figureRefence.area());
}
}