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My Intro to Object-Oriented Programming
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Programming Challenge Archive
Laboratory Challenges
Scripting with Shapes
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This laboratory provided an exercise in creating and using objects. In addition, we got to equate the standard input file with a data file.
Laboratory Challenges --
Scripting with Shapes
// General Information
// -------------------------------------------------+
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// File: ShapesTasksApp.java
// Type: java application file
// Date: Tue Oct 14, 1997
// Name: blue
// Line: Support for "Scripting with Shapes" Lab
// Application Description
// -------------------------------------------------+
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/*
Support for "Scripting with Shapes" Lab
*/
// Required Packages
// -------------------------------------------------+
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import blue.io.*;
import blue.shapes.*;
// Application Class
// -------------------------------------------------+
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class ShapesTasksApp
{
static public void main (String args[])
{
// Read some numbers
double squareSide = IO.read_double();
double height = IO.read_double();
double width = IO.read_double();
double same = IO.read_double();
double diff = IO.read_double();
int degree = IO.read_int();
double polySide = IO.read_double();
// Establish shapes bindings
Square s = new Square(squareSide);
Rectangle r = new Rectangle(height,width);
Triangle t = new Triangle(same,same,diff);
Polygon p = new Polygon(degree,polySide);
// Establish shapes bindings
s.describe();
r.describe();
t.describe();
p.describe();
// Display the number of sides of the polygon
IO.print("The polygon has degree: ");
int ps = p.degree();
IO.println(ps);
// Display the distance between far corners
IO.print("The distance is ");
double diagonal = r.diagonal();
IO.println(diagonal);
// Display the area of a pyramid
IO.print("The surface area is ");
double saPyramid = s.area() + 4 * t.area();+
IO.println(saPyramid);
// Display the area of the scrap
IO.print("The area of the scrap is ");
Circle ic = s.inscribingCircle();
double scrap = s.area() - ic.area();
IO.println(scrap);
// Display the area of a polygon
IO.print("The area of the polygon is ");
Polygon newPoly = new Polygon(2*degree,poly+
Side/2.0);
IO.println(newPoly.area());
}
}
// Demo
// -------------------------------------------------+
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/*
$ javac ShapesTasksApp.java
$ java ShapesTasksApp
|> Square with SIDE=14.0 <|
|> Rectangle with HEIGHT=2.5 WIDTH=7.99 <|
|> Triangle with SIDEA=29.5 SIDEB= 29.5 SIDEC= 14.0 <|
|> Polygon with DEGREE=8 SIDE= 12.6 <|
The polygon has degree: 8
The distance is 8.371983038683249
The surface area is 998.4088733307976
The area of the scrap is 42.06195997410015
The area of the polygon is 798.1404177698992
$
*/
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