Create an abstract class "Shape" having two data members, constructors and abstract method disparea (). Derive a class "Rectangle" and "Traingle" from "Shape" class which include appropriate constructors and implement disparea () methods. Create objects of "Rectangle" and "Triangle" classes and call the disparea () methods. NOTE: keep every class definition in separate file named same as a class name within package.same

 package p11;

import java.util.*;

abstract class Shape 

{

 int length,width, radius;

 Scanner s = new Scanner(System.in);

 abstract void disparea();

}

class Rectangle extends Shape 

{

 void disparea()

 {

  System.out.println("Enter length and width of rectangle: ");

  length = s.nextInt();

  width = s.nextInt();

  int a = length * width;

    

     System.out.println("The area of Rectangle is: " + a);

 }

}

class Triangle extends Shape {

 void disparea()

 {

  System.out.println("Enter Base And Height of triangle: ");

  length = s.nextInt();

  width = s.nextInt();

     int b= (( length * width ) / 2) ;

  System.out.println("The area of Triangle is: " + b);

 }

}

public class P11 {

 public static void main(String[] args) 

 {

  Rectangle rec = new Rectangle();

  rec.disparea();

  Triangle tri = new Triangle();

  tri.disparea();

 }

}