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SuryamadhanSuryamadhan
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lesson 6
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‎Lesson_06/Lesson_06.zip

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‎Lesson_06/Lessons/ExampleOne/runFunction.java

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public class runFunction
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{
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public static void main(String[]args)
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{
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int run = 4;
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// 1 is square
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// 2 is rectangle
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// 3 is triangle
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// 4 is circle
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//variables used for Square object parameters
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double squareSide = 2;
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//variables used for Rectangle object parameters
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double rectLength = 4;
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double rectWidth = 7;
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//variables used for Triangle object parameters
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double sideOne = 5;
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double sideTwo = 3;
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double sideThree = 4;
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//variables used for Circle object parameters
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double radius = 4;
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Square squareObject = new Square(squareSide); //The Square Object
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Rectangle rectObject = new Rectangle(rectLength, rectWidth); //The Rectangle Object
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Triangle triObject = new Triangle(sideOne, sideTwo, sideThree); //The Triangle Object
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Circle circObject = new Circle(radius); //The Circle Object
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if(run == 1)
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{
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System.out.println("The area of the square is " + squareObject.returnArea());
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System.out.println("The perimeter of the square is " + squareObject.returnPerimeter());
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}
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else if(run == 2)
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{
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System.out.println("The area of the rectangle is " + rectObject.returnArea());
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System.out.println("The perimeter of the rectangle is " + rectObject.returnPerimeter());
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}
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else if(run == 3)
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{
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System.out.println("The area of the triangle is " + triObject.returnArea());
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System.out.println("The perimeter of the triangle is " + triObject.returnPerimeter());
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}
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else if(run == 4)
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{
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System.out.println("The area of the circle is " + circObject.returnArea());
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System.out.println("The perimeter of the circle is " + circObject.returnPerimeter());
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}
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else
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{
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System.out.println("The variable 'run', has an inappropriate value.");
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}
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}
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}
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//The Square class
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class Square
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{
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double side;//variable used for calculation purposes
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public Square(double s) //This is what we call the constructor, it acts like parameters (used to import variable from other classes)
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{
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side = s;
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}
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public double returnArea() // This function returns the value of the Area
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{
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return side*side;
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}
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public double returnPerimeter() // This function returns the value of the Perimeter
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{
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return 4*side;
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}
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}
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class Rectangle
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{
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double length, width; //variables used for calculation purposes
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public Rectangle(double x, double y) //Constructor
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{
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length = x;
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width = y;
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}
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public double returnArea() // This function returns the value of the Area
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{
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return length*width;
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}
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public double returnPerimeter() // This function returns the value of the Perimeter
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{
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return 2*(length + width);
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}
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}
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class Triangle
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{
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double sideOne, sideTwo, sideThree; //variables used for calculation purposes
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public Triangle(double s1, double s2, double s3) //Constructor
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{
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sideOne = s1;
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sideTwo = s2;
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sideThree = s3;
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}
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public double returnArea() // This function returns the value of the Area
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{
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double p = returnPerimeter()/2;
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return Math.pow((p) * (p - sideOne) * (p - sideTwo) * (p - sideThree), .5);
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}
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public double returnPerimeter() // This function returns the value of the Perimeter
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{
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return sideTwo + sideOne + sideThree;
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}
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}
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class Circle
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{
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double radius; //variable used for calculation purposes
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public Circle(double r) //Constructor
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{
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radius = r;
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}
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public double returnArea() // This function returns the value of the Area
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{
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return Math.PI * radius * radius;
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}
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public double returnPerimeter() // This function returns the value of the Perimeter
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{
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return Math.PI * radius * 2;
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}
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}

‎Lesson_06/Lessons/ExampleTwo/Circle.java

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public class Circle
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{
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double radius; //variable used for calculation purposes
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public Circle(double r) //Constructor
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{
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radius = r;
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}
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public double returnArea() // This function returns the value of the Area
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{
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return Math.PI * radius * radius;
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}
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public double returnPerimeter() // This function returns the value of the Perimeter
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{
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return Math.PI * radius * 2;
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}
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}

‎Lesson_06/Lessons/ExampleTwo/Rectangle.java

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public class Rectangle
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{
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double length, width; //variables used for calculation purposes
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public Rectangle(double x, double y) //Constructor
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{
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length = x;
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width = y;
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}
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public double returnArea() // This function returns the value of the Area
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{
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return length*width;
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}
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public double returnPerimeter() // This function returns the value of the Perimeter
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{
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return 2*(length + width);
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}
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}

‎Lesson_06/Lessons/ExampleTwo/Square.java

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public class Square
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{
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double side;//variable used for calculation purposes
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public Square(double s) //This is what we call the constructor, it acts like parameters (used to import variable from other classes)
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{
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side = s;
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}
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public double returnArea() // This function returns the value of the Area
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{
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return side*side;
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}
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public double returnPerimeter() // This function returns the value of the Perimeter
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{
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return 4*side;
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}
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}

‎Lesson_06/Lessons/ExampleTwo/Triangle.java

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public class Triangle
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{
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double sideOne, sideTwo, sideThree; //variables used for calculation purposes
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public Triangle(double s1, double s2, double s3) //Constructor
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{
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sideOne = s1;
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sideTwo = s2;
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sideThree = s3;
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}
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public double returnArea() // This function returns the value of the Area
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{
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double p = returnPerimeter()/2;
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return Math.pow((p) * (p - sideOne) * (p - sideTwo) * (p - sideThree), .5);
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}
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public double returnPerimeter() // This function returns the value of the Perimeter
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{
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return sideTwo + sideOne + sideThree;
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}
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}

‎Lesson_06/Lessons/ExampleTwo/runFunction.java

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public class runFunction
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{
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public static void main(String[]args)
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{
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int run = 4;
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// 1 is square
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// 2 is rectangle
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// 3 is triangle
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// 4 is circle
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double squareSide = 2;
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double rectLength = 4;
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double rectWidth = 7;
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double sideOne = 5;
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double sideTwo = 3;
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double sideThree = 4;
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double radius = 4;
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Square squareObject = new Square(squareSide);
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Rectangle rectObject = new Rectangle(rectLength, rectWidth);
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Triangle triObject = new Triangle(sideOne, sideTwo, sideThree);
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Circle circObject = new Circle(radius);
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if(run == 1)
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{
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System.out.println("The area of the square is " + squareObject.returnArea());
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System.out.println("The perimeter of the square is " + squareObject.returnPerimeter());
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}
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else if(run == 2)
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{
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System.out.println("The area of the rectangle is " + rectObject.returnArea());
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System.out.println("The perimeter of the rectangle is " + rectObject.returnPerimeter());
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}
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else if(run == 3)
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{
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System.out.println("The area of the triangle is " + triObject.returnArea());
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System.out.println("The perimeter of the triangle is " + triObject.returnPerimeter());
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}
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else if(run == 4)
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{
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System.out.println("The area of the circle is " + circObject.returnArea());
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System.out.println("The perimeter of the circle is " + circObject.returnPerimeter());
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}
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else
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{
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System.out.println("The variable run, has an inappropriate value.");
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}
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}
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}

‎Lesson_06/Lessons/Lesson.zip

11.1 KB
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