untitled-folder-1.zip_Untitled 1

import java.io.*; import java.util.*; class Abstract{ float length; float breadth; float height; float base; void getrectangle() { try{ InputStreamReader isr = new InputStreamReader(System.in); BufferedReader br = new BufferedReader(isr); System.out.println("Enter the length and breadth of rectangle "); String str = br.readLine(); length= Integer.parseInt(str); str = br.readLine(); breadth= Integer.parseInt(str); }catch (Exception e) { e.printStackTrace(); } } void gettriangle() { try{ InputStreamReader isr = new InputStreamReader(System.in); BufferedReader br = new BufferedReader(isr); System.out.println("Enter the base and height of rectangle "); String str = br.readLine(); base= Integer.parseInt(str); str = br.readLine(); height= Integer.parseInt(str); }catch (Exception e) { e.printStackTrace(); } } } class Rectangle extends Abstract{ void calculatearea(float len,float bread) { float area=len*bread; System.out.println("Area of rectangle = "+area); } } class Triangle extends Rectangle{ public static void main(String args[]){ Triangle b = new Triangle(); Rectangle c = new Rectangle(); c.getrectangle();c.calculatearea(c.length,c.breadth); b.gettriangle(); b.calculatearea(b.base,b.height); } void calculatearea(float bas,float heigh) { float area=0.5*bas*heigh; System.out.println("Area of rectangle = "+area); } }