Displaying right triangle, rectangle, and square along with their areas and perimeters Program Plan: Filename: Test.java • Define main function. ○ Create the objects for “RightTriangle”, “Rectangle”, and “Square” classes and pass the input value to the respective methods. ○ Call the “drawHere” method with “RightTriangle” object “rt”. ○ Call the “findArea” and “findCircumference” methods with “RightTriangle” object “rt”. ○ Call the “drawHere”, and “drawAt” methods with “Rectangle” object “r”. ○ Call the “findArea” and “findCircumference” methods with “Rectangle” object “r”. ○ Call the “drawHere”, and “drawAt” methods with “Square” object “s”. ○ Call the “findArea” and “findCircumference” methods with “Square” object “s”. ○ Display the all the outputs. Filename: RightTriangle.java • Define the “RightTriangle.java” class extends from “ShapeBase” class that implements “ShapeInterface”. • Declare the required variables. • Define the default constructor, and constructor for the class. • Define the “set” method. ○ Set the value. • Define “drawHere” method. ○ Call the “drawTop” method. • Define the “drawTop” method. ○ Declare the variable “startOfLine” and assign the value of offset plus base divided by 2. ○ Call the “skipSpaces()” method with “startOfLine” value. ○ Display the “” character. ○ Declare the variable “lineCount” and assign the value of base divided by 2 minus 1. ○ Declare the “insideWidth” with value 1. ○ The “for” condition is used to display the “” character in triangle shape. ■ Decrement the “startOfLine” value. ■ Call the “skipSpaces()” method with “startOfLine” value. ■ Display the “” character. ■ Call the “skipSpaces()” method with “insideWidth” value. ■ Display the “” character. ■ Increment the “insideWidth” value by 1. ○ Call the “drawBase” method with an argument. • Define “drawBase” method. ○ Call the “skipSpaces()” method. ○ Display the “*” character in base of the triangle. • Define “skipSpaces()” method. ○ Display the space. • Define the “findArea” method. ○ Return the area of right triangle. • Define the “findCircumference” method. ○ Return perimeter of the right triangle. Filename: Rectangle.java • Define the “Rectangle.java” class extends from “ShapeBase” class that implements “ShapeInterface”. • Include all the methods in the Listing 8.13 in chapter 8. • Define another constructor with two parameters. ○ Set the values. • Define the “findArea” method. ○ Return the area of rectangle. • Define the “findCircumference” method. ○ Return perimeter of the rectangle. Filename: Square.java • Define the “Sqaure.java” class which extends from the “Rectangle” class that implements “ShapeInterface”. • Declare the required variables. • Define the constructor for the class. • Define the accessor and mutator methods. • Define the “findArea” method. ○ Return the area of square. • Define the “findCircumference” method. ○ Return perimeter of the square. Filename: ShapeInterface.java Define the interface “SpaceInterface”. • Declare the “setOffset()” method. • Declare the “getOffset()” method. • Declare the “drawAt()” method. • Declare the “drawHere()” method.

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Chapter 8, Problem 4PP

Program Plan Intro

Displaying right triangle, rectangle, and square along with their areas and perimeters

Program Plan:

Filename: Test.java

• Define main function.

○ Create the objects for “RightTriangle”, “Rectangle”, and “Square” classes and pass the input value to the respective methods.

○ Call the “drawHere” method with “RightTriangle” object “rt”.

○ Call the “findArea” and “findCircumference” methods with “RightTriangle” object “rt”.

○ Call the “drawHere”, and “drawAt” methods with “Rectangle” object “r”.

○ Call the “findArea” and “findCircumference” methods with “Rectangle” object “r”.

○ Call the “drawHere”, and “drawAt” methods with “Square” object “s”.

○ Call the “findArea” and “findCircumference” methods with “Square” object “s”.

○ Display the all the outputs.

Filename: RightTriangle.java

• Define the “RightTriangle.java” class extends from “ShapeBase” class that implements “ShapeInterface”.

• Declare the required variables.

• Define the default constructor, and constructor for the class.

• Define the “set” method.

○ Set the value.

• Define “drawHere” method.

○ Call the “drawTop” method.

• Define the “drawTop” method.

○ Declare the variable “startOfLine” and assign the value of offset plus base divided by 2.

○ Call the “skipSpaces()” method with “startOfLine” value.

○ Display the “” character.

○ Declare the variable “lineCount” and assign the value of base divided by 2 minus 1.

○ Declare the “insideWidth” with value 1.

○ The “for” condition is used to display the “” character in triangle shape.

■ Decrement the “startOfLine” value.

■ Call the “skipSpaces()” method with “startOfLine” value.

■ Display the “” character.

■ Call the “skipSpaces()” method with “insideWidth” value.

■ Display the “” character.

■ Increment the “insideWidth” value by 1.

○ Call the “drawBase” method with an argument.

• Define “drawBase” method.

○ Call the “skipSpaces()” method.

○ Display the “*” character in base of the triangle.

• Define “skipSpaces()” method.

○ Display the space.

• Define the “findArea” method.

○ Return the area of right triangle.

• Define the “findCircumference” method.

○ Return perimeter of the right triangle.

Filename: Rectangle.java

• Define the “Rectangle.java” class extends from “ShapeBase” class that implements “ShapeInterface”.

• Include all the methods in the Listing 8.13 in chapter 8.

• Define another constructor with two parameters.

○ Set the values.

• Define the “findArea” method.

○ Return the area of rectangle.

• Define the “findCircumference” method.

○ Return perimeter of the rectangle.

Filename: Square.java

• Define the “Sqaure.java” class which extends from the “Rectangle” class that implements “ShapeInterface”.

• Declare the required variables.

• Define the constructor for the class.

• Define the accessor and mutator methods.

• Define the “findArea” method.

○ Return the area of square.

• Define the “findCircumference” method.

○ Return perimeter of the square.

Filename: ShapeInterface.java

Define the interface “SpaceInterface”.

• Declare the “setOffset()” method.

• Declare the “getOffset()” method.

• Declare the “drawAt()” method.

• Declare the “drawHere()” method.

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