Using Java - Creating an Abstract Class Shape IICreate an abstract class "Shape" with the following specifications:an abstract method "area()" of return type doublean abstract method "perimeter()" of return type double.Put your code in a Java source file named "Shape.java."I.Create a class "Rectangle" that extends the Shape class with the following specifications:Attributes:width, lengthConstructor:Implement a parameterized constructor needed initialize the data.toString:Implement a "toString" method that prints out the area and perimeter.Implement methods to compute the area and perimeter.II.Create a class "Circle" that extends the Shape class with the following specifications:Attributes:radiusConstructor:Implement a parameterized constructor to initialize the data.toString:Implement a "toString" method that prints out the area and perimeter.Implement methods to compute the area and perimeter.III.Create a class "Triangle" that extends the Shape class with the following specifications:Attributes:length of side1, length of side2, length of side3, each is a doubleConstructor:Implement a parameterized constructor to initialize the data.toString:Implement a "toString" method that prints out the area and perimeter.Implement methods to compute the area and perimeter.IV.Create a driver class named "ShapeArray" with the following specifications:Instantiate one triangle.Instantiate one circle.Instantiate one square.Store the class instances into an array named "shapeArray."Loop through the array and print out the instance data of each objectusing the object instance's "toString" method.Show a UML diagram of your project. Create an abstract class "Shape" with the following specifications:1. an abstract method "area()" of return type double2. an abstract method "perimeter()" of return type double.Put your code in a Java source file named "Shape.java."I.Create a class "Rectangle" that extends the Shape class with the following specifications:1. Attributes:OII.2. Constructor:Implement a parameterized constructor needed initialize the data.O3. toString:Owidth, lengthImplement methods to compute the area and perimeter.OImplement a "toString" method that prints out the area and perimeter.Create a class "Circle" that extends the Shape class with the following specifications:1. Attributes:o radius2. Constructor:OImplement a parameterized constructor to initialize the data.3.toString:Implement a "toString" method that prints out the area and perimeter.Implement methods to compute the area and perimeter. III.Create a class "Triangle" that extends the Shape class with the following specifications:1. Attributes:length of side 1, length of side2, length of side3, each is a double2. Constructor:Implement a parameterized constructor to initialize the data.OIV.O3.toString:o Implement a "toString" method that prints out the area and perimeter.Implement methods to compute the area and perimeter.Create a driver class named "ShapeArray" with the following specifications:1. Instantiate one triangle.2. Instantiate one circle.3. Instantiate one square.4. Store the class instances into an array named "shapeArray."5. Loop through the array and print out the instance data of each object6. using the object instance's "toString" method.Show a UML diagram of your project.

The JAVA Code is given below with output screenshot along with UML diagram

Using Java - Creating an Abstract Class Shape II Create an abstract class "Shape" with the following specifications: an abstract method "area()" of return type double an abstract method "perimeter()" of return type double. Put your code in a Java source file named "Shape.java." I. Create a class "Rectangle" that extends the Shape class with the following specifications: Attributes: width, length Constructor: Implement a parameterized constructor needed initialize the data. toString: Implement a "toString" method that prints out the area and perimeter. Implement methods to compute the area and perimeter. II. Create a class "Circle" that extends the Shape class with the following specifications: Attributes: radius Constructor: Implement a parameterized constructor to initialize the data. toString: Implement a "toString" method that prints out the area and perimeter. Implement methods to compute the area and perimeter. III. Create a class "Triangle" that extends the Shape class with the following specifications: Attributes: length of side1, length of side2, length of side3, each is a double Constructor: Implement a parameterized constructor to initialize the data. toString: Implement a "toString" method that prints out the area and perimeter. Implement methods to compute the area and perimeter. IV. Create a driver class named "ShapeArray" with the following specifications: Instantiate one triangle. Instantiate one circle. Instantiate one square. Store the class instances into an array named "shapeArray." Loop through the array and print out the instance data of each object using the object instance's "toString" method. Show a UML diagram of your project.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Using Java - Creating an Abstract Class Shape II Create an abstract class "Shape" with the following specifications: an abstract method "area()" of return type double an abstract method "perimeter()" of return type double. Put your code in a Java source file named "Shape.java." I. Create a class "Rectangle" that extends the Shape class with the following specifications: Attributes: width, length Constructor: Implement a parameterized constructor needed initialize the data. toString: Implement a "toString" method that prints out the area and perimeter. Implement methods to compute the area and perimeter. II. Create a class "Circle" that extends the Shape class with the following specifications: Attributes: radius Constructor: Implement a parameterized constructor to initialize the data. toString: Implement a "toString" method that prints out the area and perimeter. Implement methods to compute the area and perimeter. III. Create a class "Triangle" that extends the Shape class with the following specifications: Attributes: length of side1, length of side2, length of side3, each is a double Constructor: Implement a parameterized constructor to initialize the data. toString: Implement a "toString" method that prints out the area and perimeter. Implement methods to compute the area and perimeter. IV. Create a driver class named "ShapeArray" with the following specifications: Instantiate one triangle. Instantiate one circle. Instantiate one square. Store the class instances into an array named "shapeArray." Loop through the array and print out the instance data of each object using the object instance's "toString" method. Show a UML diagram of your project.

Create an abstract class "Shape" with the following specifications:
1. an abstract method "area()" of return type double
2. an abstract method "perimeter()" of return type double.
Put your code in a Java source file named "Shape.java."
I.
Create a class "Rectangle" that extends the Shape class with the following specifications:
1. Attributes:
O
II.
2. Constructor:
Implement a parameterized constructor needed initialize the data.
O
3. toString:
O
width, length
Implement methods to compute the area and perimeter.
O
Implement a "toString" method that prints out the area and perimeter.
Create a class "Circle" that extends the Shape class with the following specifications:
1. Attributes:
o radius
2. Constructor:
O
Implement a parameterized constructor to initialize the data.
3.toString:
Implement a "toString" method that prints out the area and perimeter.
Implement methods to compute the area and perimeter.

III.
Create a class "Triangle" that extends the Shape class with the following specifications:
1. Attributes:
length of side 1, length of side2, length of side3, each is a double
2. Constructor:
Implement a parameterized constructor to initialize the data.
O
IV.
O
3.toString:
o Implement a "toString" method that prints out the area and perimeter.
Implement methods to compute the area and perimeter.
Create a driver class named "ShapeArray" with the following specifications:
1. Instantiate one triangle.
2. Instantiate one circle.
3. Instantiate one square.
4. Store the class instances into an array named "shapeArray."
5. Loop through the array and print out the instance data of each object
6. using the object instance's "toString" method.
Show a UML diagram of your project.

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