Testing the Point class

TestPoint class

Note: the following code should be in a file named TestPoint.java.

/*******************************************************************************
Program:         TestPoint

Author:          Rebecca Hasti, hasti@cs.wisc.edu
                 copyright 2000, all rights reserved
Course:          CS 302

Compiler:        Metrowerks CodeWarrior (JDK 1.2)
Platform:        Windows NT 4.0 / 95 / 2000
*******************************************************************************/

/**
 * This program tests the Point class.
 *
 * Bugs:	none known
 **/
class TestPoint {

	public static void main(String args[]) {
		// declare two Point variables
		Point point1, point2;
		
		// create two Point objects
		point1 = new Point(2.5, 10.8);
		point2 = new Point();
		System.out.println("**** Test constructors ****");
		point1.print();					// print out point1
		point2.print();					// print out point2
		
		// test setX and setY
		System.out.println("**** Test mutator methods ****");
		point1.setX(99);
		point1.setY(88);
		point1.print();
		
		// test getX and getY
		System.out.println("**** Test accessor methods ****");
		System.out.println("point1.getX() = " + point1.getX());
		System.out.println("point1.getY() = " + point1.getY());
		
		// illustrate how assignment assignment works
		double xPoint1, yPoint1;
		Point point3;
		
		point3 = point1;			   // assign point1 to point3
		
		xPoint1 = point1.getX();	// assign point1's x and y coordinates
		yPoint1 = point1.getY();	// to xPoint1 and yPoint1, respectively
		point2.setX(xPoint1);		// set point2's x and y coordinates
		point2.setY(yPoint1);
		
		// print out all the points
		System.out.println("**** Illustrate assignment ****");
		System.out.print("point1 = ");
		point1.print();				
		System.out.print("point2 = ");
		point2.print();
		System.out.print("point3 = ");
		point3.print();
		
		point3.setX(33);			// set point3's x coordinate to 33
		
		// print out all the points
		System.out.println("-------------------------------");
		System.out.print("point1 = ");
		point1.print();				
		System.out.print("point2 = ");
		point2.print();
		System.out.print("point3 = ");
		point3.print();
	} // end method main
} // end class TestPoint

Output from TestPoint program

Note: the output will appear in a MSDOS window with a black background, white letters, and the title of the window set to java. This is the console window.

**** Test constructors ****
(2.5, 10.8)
(0.0, 0.0)
**** Test accessor methods ****
(99.0, 88.0)
**** Test mutator methods ****
point1.getX() = 99.0
point1.getY() = 88.0
**** Illustrate assignment ****
point1 = (99.0, 88.0)
point2 = (99.0, 88.0)
point3 = (99.0, 88.0)
-------------------------------
point1 = (33.0, 88.0)
point2 = (99.0, 88.0)
point3 = (33.0, 88.0)