Thread: Creating Objects: A question about the Java Tutorials example program

Hello All,

So I've been trying to learn Java to write a browser based text adventure and to do this I've been going through the standard java tutorials found here:
Objects (The Java™ Tutorials > Learning the Java Language > Classes and Objects)

I put together a program from the three classes they describe on that page in the netbeans compiler as follows:

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package experiment.ground;
/**
 *
 * @author Geoffrey
 */
 
 
public class ExperimentGround {
 
 
 
    public static void main(String[] args) {
 
        // Declare and create a point object
        // and two rectangle objects.
        Point originOne = new Point(23, 94);
        Rectangle rectOne = new 
            Rectangle(originOne, 100, 200);
        Rectangle rectTwo =
            new Rectangle(50, 100);
 
        // display rectOne's width,
        // height, and area
        System.out.println("Width of rectOne: "
                           + rectOne.width);
        System.out.println("Height of rectOne: "
                           + rectOne.height);
        System.out.println("Area of rectOne: "
                           + rectOne.getArea());
 
        // set rectTwo's position
        rectTwo.origin = originOne;
 
        // display rectTwo's position
        System.out.println("X Position of rectTwo: "
                           + rectTwo.origin.x);
        System.out.println("Y Position of rectTwo: "
                           + rectTwo.origin.y);
 
        // move rectTwo and display 
        // its new position
        rectTwo.move(40, 72);
        System.out.println("X Position of rectTwo: "
                           + rectTwo.origin.x);
        System.out.println("Y Position of rectTwo: "
                           + rectTwo.origin.y);
    }
}
 
public class Point {
    public int x = 0;
    public int y = 0;
    // a constructor!
    public Point(int a, int b) {
    x = a;
    y = b;
    }
}
 
public class Rectangle {
    public int width = 0;
    public int height = 0;
    public Point origin;
 
    // four constructors
    public Rectangle() {
    origin = new Point(0, 0);
    }
    public Rectangle(Point p) {
    origin = p;
    }
    public Rectangle(int w, int h) {
    origin = new Point(0, 0);
    width = w;
    height = h;
    }
    public Rectangle(Point p, int w, int h) {
    origin = p;
    width = w;
    height = h;
    }
 
    // a method for moving the rectangle
    public void move(int x, int y) {
    origin.x = x;
    origin.y = y;
    }
 
    // a method for computing the area of the rectangle
    public int getArea() {
    return width * height;
    }
}
}

This program does not accept the declaration of the last two classes and says that they have to be declared in a files (I'm not sure what that means).

I'm working without any guidance here aside from the tutorials. I would really appreciate it if someone would tell me what I'm doing wrong.

Thank you in advance!

I'm guessing the classes need to be separate files in the same package. I'm going to try that out.