Implement all the classes using Java programming language from the given UML Class diagram.

Note: This problem requires you to submit just two classes: Circle.java, Circle.java, Rectangle.java, Square.java.

Do NOT include "public static void main()" method inside all of these classes.

Write a superclass called Shape (as shown in the class diagram), which contains:

Two instance variables color (String) and filled (boolean).

Two constructors: a no-arg (no-argument) constructor that initializes the color to "green" and filled to true, and a constructor that initializes the color and filled to the given values.

Getter and setter for all the instance variables. By convention, the getter for a boolean variable xxx is called isXXX() (instead of getXxx() for all the other types).

A toString() method that returns "A Shape with color of xxx and filled/Not filled".

Write a test program to test all the methods defined in Shape.

Write two subclasses of Shape called Circle and Rectangle, as shown in the class diagram.

The Circle class contains:

An instance variable radius (double).

Three constructors as shown. The no-arg constructor initializes the radius to 1.0.

Getter and setter for the instance variable radius.

Methods getArea() and getPerimeter().

Override the toString() method inherited, to return "A Circle with radius=xxx, which is a subclass of yyy", where yyy is the output of the toString() method from the superclass.

The Rectangle class contains:

Two instance variables width (double) and length (double).

Three constructors as shown. The no-arg constructor initializes the width and length to 1.0.

Getter and setter for all the instance variables.

Methods getArea() and getPerimeter().

Override the toString() method inherited, to return "A Rectangle with width=xxx and length=zzz, which is a subclass of yyy", where yyy is the output of the toString() method from the superclass.

Write a class called Square, as a subclass of Rectangle. Convince yourself that Square can be modeled as a subclass of Rectangle. Square has no instance variable, but inherits the instance variables width and length from its superclass Rectangle.

Provide the appropriate constructors (as shown in the class diagram). Hint:public Square(double side) { super(side, side); // Call superclass Rectangle(double, double) }

Override the toString() method to return "A Square with side=xxx, which is a subclass of yyy", where yyy is the output of the toString() method from the superclass.

Do you need to override the getArea() and getPerimeter()? Try them out.

Override the setLength() and setWidth() to change both the width and length, so as to maintain the square geometry.
Transcribed Image Text:Shape -color:String = "red" -filled:boolean = true +Shape() +Shape(color:String,filled:boolean) +setColor(color:String):void +isfilled():boolean +setFilled(filled:boolean):void +tostring():String.- "Shape[color=?, filled=?]" extends 4 Circle Rectangle -radius:double = 1.0 +Circle() +Circle(radius:double) +Circle(radius: double, color:String, filled:boolean) +getRadius ():double +setRadius (radius:double):void +getArea(): double +getPerimeter():double +tostring():String.. -width:double = 1.0 -length:double 1.0 +Rectangle() +Rectangle(width:double, length:double) +Rectangle(width:double, length:double, color:String, filled:boolean) +getWidth():double +setwidth(width: double):void +getLength():double +setlength(legnth:double):void +getArea():double +getPerimeter(): double +tostring():String "Circle[Shape[color=?, filled=?],radius=?]" "Rectangle[Shape[color=?, filled-?],width=?,length=?]" Square +Square() +Square(side:double) +Square(side:double, color:String, filled:boolean) +getSide():double +setSide(side:double):void +setwidth(side:double):void setLength(side:double):void +tostring():String The length and width shall be set to the same value. "Square[Rectangle[Shape[color=?, filled=?],width=?,length=?]]"

Question

Implement all the classes using Java programming language from the given UML Class diagram.

Note: This problem requires you to submit just two classes: Circle.java, Circle.java, Rectangle.java, Square.java.

Do NOT include "public static void main()" method inside all of these classes.

Write a superclass called Shape (as shown in the class diagram), which contains:

Two instance variables color (String) and filled (boolean).

Two constructors: a no-arg (no-argument) constructor that initializes the color to "green" and filled to true, and a constructor that initializes the color and filled to the given values.

Getter and setter for all the instance variables. By convention, the getter for a boolean variable xxx is called isXXX() (instead of getXxx() for all the other types).

A toString() method that returns "A Shape with color of xxx and filled/Not filled".

Write a test program to test all the methods defined in Shape.

Write two subclasses of Shape called Circle and Rectangle, as shown in the class diagram.

The Circle class contains:

An instance variable radius (double).

Three constructors as shown. The no-arg constructor initializes the radius to 1.0.

Getter and setter for the instance variable radius.

Methods getArea() and getPerimeter().

Override the toString() method inherited, to return "A Circle with radius=xxx, which is a subclass of yyy", where yyy is the output of the toString() method from the superclass.

The Rectangle class contains:

Two instance variables width (double) and length (double).

Three constructors as shown. The no-arg constructor initializes the width and length to 1.0.

Getter and setter for all the instance variables.

Methods getArea() and getPerimeter().

Override the toString() method inherited, to return "A Rectangle with width=xxx and length=zzz, which is a subclass of yyy", where yyy is the output of the toString() method from the superclass.

Write a class called Square, as a subclass of Rectangle. Convince yourself that Square can be modeled as a subclass of Rectangle. Square has no instance variable, but inherits the instance variables width and length from its superclass Rectangle.

Provide the appropriate constructors (as shown in the class diagram). Hint:public Square(double side) { super(side, side); // Call superclass Rectangle(double, double) }

Override the toString() method to return "A Square with side=xxx, which is a subclass of yyy", where yyy is the output of the toString() method from the superclass.

Do you need to override the getArea() and getPerimeter()? Try them out.

Override the setLength() and setWidth() to change both the width and length, so as to maintain the square geometry.

Shape
-color:String = "red"
-filled:boolean = true
+Shape()
+Shape(color:String,filled:boolean)
+setColor(color:String):void
+isfilled():boolean
+setFilled(filled:boolean):void
+tostring():String.-
"Shape[color=?, filled=?]"
extends 4
Circle
Rectangle
-radius:double = 1.0
+Circle()
+Circle(radius:double)
+Circle(radius: double,
color:String, filled:boolean)
+getRadius ():double
+setRadius (radius:double):void
+getArea(): double
+getPerimeter():double
+tostring():String..
-width:double = 1.0
-length:double 1.0
+Rectangle()
+Rectangle(width:double,
length:double)
+Rectangle(width:double,
length:double, color:String,
filled:boolean)
+getWidth():double
+setwidth(width: double):void
+getLength():double
+setlength(legnth:double):void
+getArea():double
+getPerimeter(): double
+tostring():String
"Circle[Shape[color=?,
filled=?],radius=?]"
"Rectangle[Shape[color=?,
filled-?],width=?,length=?]"
Square
+Square()
+Square(side:double)
+Square(side:double,
color:String, filled:boolean)
+getSide():double
+setSide(side:double):void
+setwidth(side:double):void
setLength(side:double):void
+tostring():String
The length and width shall be
set to the same value.
"Square[Rectangle[Shape[color=?,
filled=?],width=?,length=?]]"

Accepted Answer

public class Shape {  //declaring instance variables private String color; private boolean filled;…