Create a Quadrilateral, Oval, Triangle, Polygon class that are all extended from an abstract Shape class (given below). Then extend the Quadrilateral class to make a Rectangle class and then extend the Rectangle class to make a Square class. Extend the Oval class to make a Circle class. Extend the Polygon to make a Pentagon and Hexagon classes. These shape classes will contain state information for the object to be drawn.

Shapes.java

public abstract class Shapes {

}

Triangle.java

public abstract class Triangle extends Shapes {

}

IsoscelesTriangle.java

public class IsoscelesTriangle extends Triangle {

double side1;

double side2;

public double getSide1() {

return side1;

}

public void setSide1(double side1) {

this.side1 = side1;

}

public double getSide2() {

return side2;

}

public void setSide2(double side2) {

this.side2 = side2;

}

public IsoscelesTriangle(double side1, double side2) {

super();

this.side1 = side1;

this.side2 = side2;

}

public double perimeter()

{

return 2*side1+side2;

}

public double area()

{

return side1*side2/2;

}

}

EquilateralTriangle.java

public class EquilateralTriangle extends Triangle {

double side;

public EquilateralTriangle(double side) {

super();

this.side = side;

}

public double getSide() {

return side;

}

public void setSide(double side) {

this.side = side;

}

public double perimeter()

{

return 3*side;

}

public double area()

{

return 1.73205*side*side/4;

}

}

Quadrilateral.java

public abstract class Quadrilateral extends Shapes {

}

Rectangle.java

public class Rectangle extends Quadrilateral {

double length;

double breadth;

public double getLength() {

return length;

}

public void setLength(double length) {

this.length = length;

}

public double getBreadth() {

return breadth;

}

public void setBreadth(double breadth) {

this.breadth = breadth;

}

public Rectangle(double length, double breadth) {

super();

this.length = length;

this.breadth = breadth;

}

public double perimeter()

{

return 2*(length+breadth);

}

public double area()

{

return length*breadth;

}

}

Square.java

public class Square extends Quadrilateral {

double side;

public Square(double side) {

super();

this.side = side;

}

public double getSide() {

return side;

}

public void setSide(double side) {

this.side = side;

}

public double perimeter()

{

return 4*side;

}

public double area()

{

return side*side;

}

}

Rhombus.java

public class Rhombus extends Quadrilateral {

double length;

double breadth;

public Rhombus(double length, double breadth) {

super();

this.length = length;

this.breadth = breadth;

}

public double getLength() {

return length;

}

public void setLength(double length) {

this.length = length;

}

public double getBreadth() {

return breadth;

}

public void setBreadth(double breadth) {

this.breadth = breadth;

}

public double perimeter()

{

return 2*(length+breadth);

}

public double area()

{

return length*breadth/2;

}

}

Test.java

import java.util.Scanner;

public class Test {

public static void main(String[] args) {

// TODO Auto-generated method stub

Scanner sc=new Scanner(System.in);

System.out.println("Enter your choice");

System.out.println("1. Create IsoscelesTriangle ");

System.out.println("2. Create EquilateralTriangle");

System.out.println("3. Create Rectangle");

System.out.println("4. Create Square");

System.out.println("5. Create Rhombus");

System.out.println("6. Create Circle");

int choice=sc.nextInt();

switch(choice)

{

case 1:

System.out.println("Enter two sides of triangle");

double side1=sc.nextDouble();

double side2=sc.nextDouble();

IsoscelesTriangle isosceles=new IsoscelesTriangle(side1, side2);

System.out.println("Area of the triangle is "+isosceles.area());

System.out.println("Perimeter of the triangle is "+ isosceles.perimeter());

break;

case 2:

System.out.println("Enter side of the triangle");

double side=sc.nextDouble();

EquilateralTriangle equilateralTriangle=new EquilateralTriangle(side);

System.out.println("Area of the triangle is "+equilateralTriangle.area());

System.out.println("Perimeter of the triangle is "+ equilateralTriangle.perimeter());

break;

case 3:

System.out.println("Enter length and breadth");

double length=sc.nextDouble();

double breadth=sc.nextDouble();

Rectangle rectangle =new Rectangle(length, breadth);

System.out.println("Area of rectangle is "+rectangle.area());

System.out.println("Perimeter of the rectangle is "+rectangle.perimeter());

break;

case 4:

System.out.println("Enter side of the square");

double squareside=sc.nextDouble();

Square square=new Square(squareside);

System.out.println("area of the square is "+square.area());

System.out.println("Perimeter of the square is "+square.perimeter());

break;

case 5:

System.out.println("Enter length and breadth of rhombus");

double rlength=sc.nextDouble();

double rbreadth=sc.nextDouble();

Rhombus rhombus=new Rhombus(rlength, rbreadth);

System.out.println("area of the rhombus is "+rhombus.area());

System.out.println("Perimeter of the rhombus is "+rhombus.perimeter());

break;

case 6:

System.out.println("Enter radius of circle");

double radius=sc.nextDouble();

Circle circle=new Circle(radius);

System.out.println("area of the circle is "+circle.area());

System.out.println("Perimeter of the circle is "+circle.perimeter());

break;

}

}

}