overriding1.java

class figure{
  double dim1;
  double dim2;
  figure(double a,double b){
     dim1=a;
     dim2=b;
  }
  double area(){
    System.out.println("area for figure is undefined");
     return 0;
   }
 }
class rectangle extends figure{
  rectangle(double a,double b){
   super(a,b);
  }
  double area(){
    System.out.println("inside area for rectangle");
    return dim1*dim2;
    }
 }
class triangle extends figure{
   triangle(double a,double b){
     super(a,b);
  }
  double area(){
   System.out.println("inside area for triangle");
   return dim1*dim2/2;
  }
}
class findareas{
   public static void main(String a[]){
      figure f=new figure(10,10);
      rectangle r=new rectangle(9,5);
      triangle t=new triangle(10,8);
      figure figuref; 
      figuref=r;
      System.out.println("area is "+figuref.area());
      figuref=t;
      System.out.println("area is "+figuref.area());
      figuref=f;
      System.out.println("area is "+figuref.area());
   }
 }