Answered: Write a java set of classes that could…

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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JAVA CODE

Write a java set of classes that could be used to do simple calculations on geometric
objects. The set should include the following classes:

a) Shapes ,containing abstract methods( a methods that is declared without an
implementation) area and perimeter

b) Rectangle, a subclass of Shape, containing a constructor (with parameters for
length and width) along with methods area and perimeter.

c) Triangle, a subclass of Shape, containing a constructor (with parameters for the

three sides of a triangle) along with methods area ( s = (a+b+c)/2, A = sqrt( s(s-a)(s-
b)(s-c) ) ) and perimeter

d) Square, a subclass of Rectangle, containing a constructor (with a parameter for the
length of a side) and methods that invoke the methods of the Rectangle class to
determine the perimeter and area of a square.

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