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My Intro to Object-Oriented Programming
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Programming Challenge Archive
Programming Assignment # 3
Global Procedural Application Architecture
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Read an edge length for a die. Determine the white percentage of the die if the black dots have a diameter equal to 1 / 5 the edge length of the die.
This version of Programming Assignment # 03 is written using the Global Procedural Application Architecture.
JavaApplication - Programming Assignment # 3 --
Global
// General Information
// ---------------------------------------------------
// File: PercentWhite.java
// Type: java application file
// Date: Wed Oct 18, 2000
// Name: Jeffrey R. Norkoli
// Line: Global Procedural Application Architecture
// Application Description
// ---------------------------------------------------
/*
Read an edge length for a die. Determine the
white percentage of the die if the black dots
have a diameter equal to 1/5 the edge length
of the die.
This version of Programming Assignment #03 is
written using the Global Procedural
Application Architecture.
*/
// Required Packages
// ---------------------------------------------------
import blue.io.*;
import blue.shapes.*;
// Application Class
// ---------------------------------------------------
class PercentWhite
{
// Data local to PercentWhite.
static private final int nrFaces = 6;
static private final int nrDots = 21;
static private double edge;
static private double diameter;
static private Square face;
static private Circle dot;
static private double totalArea;
static private double whiteArea;
static private double blackArea;
static private double percentWhite;
static public void main (String args[])
{
// Main method.
establishDieDimensions();
createFaceAndDot();
computeAreas();
computeWhitePercent();
displayWhitePercent();
}
// Establish the die dimensions.
static private void
establishDieDimensions()
{
IO.print("Please enter the side
length of the die: ");
edge = IO.read_double();
}
// Create the die face and the dots.
static private void createFaceAndDot()
{
face = new Square(edge);
diameter = edge / 5.0;
dot = new Circle(diameter / 2.0);
}
// Compute areas of die face and dots.
static private void computeAreas()
{
totalArea = face.area() * nrFaces;
blackArea = dot.area() * nrDots;
whiteArea = totalArea - blackArea;
}
// Compute the white area percentage
// of the die.
static private void computeWhitePercent()
{
percentWhite = whiteArea
/ totalArea * 100;
}
// Display the results.
static private void displayWhitePercent()
{
IO.println("The die is " +
percentWhite + " percent white.");
}
}
// Demo
// ---------------------------------------------------
/*
$ javac PercentWhite.java
$ java PercentWhite
Please enter the side length of the die: 1.79
The die is 89.00442571243572 percent white.
$ java PercentWhite
Please enter the side length of the die: 5.43
The die is 89.00442571243572 percent white.
$
*/
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