Thread: Drawing a square in a window

Hello everyone!

I am trying to get the hold on Jframes and I can so far create a simple window:

package javvv;
 
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
//package javvv;
 
public class Javvv {
/**
     * Create the GUI and show it.  For thread safety,
     * this method should be invoked from the
     * event-dispatching thread.
     */
    private static void createAndShowGUI() {
        //Create and set up the window.
        JFrame frame = new JFrame("FrameDemo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 
        JLabel emptyLabel = new JLabel("");
        emptyLabel.setPreferredSize(new Dimension(640, 480));
        frame.getContentPane().add(emptyLabel, BorderLayout.CENTER);
 
        //Display the window.
        frame.pack();
        frame.setVisible(true);
    }
 
   public static void main(String[] args) {
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
 
 
 
 
 
 
 
 
 
            }
        });
    }
 
 
//Ignore this for now.
 
   public void paint (Graphics g) {
    Graphics2D g2 = (Graphics2D) g;
 
    int x = 0;
    int y = 0;
 
 
 
}
}

And that works fine.
But I want to be able to draw for example a rectangle on it so I tried to create a class for that which takes the inputs of x, y and the sides.

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package Square_class;
 
import javax.swing.JFrame;
 
 
 
public class Square {
    private int x;     
    private int y;     
    private int side1;  
    private int side2; 
 
    /**The variables for the rectangle
     */
    public Square(int x, int y, int side) {
        this.x = x;
        this.y = y;
        this.side1 = side1;
        this.side2 = side2;
    }
    /* Draw the rectangle in the window*/
    public void draw(JFrame frame){
        frame.g2.draw(new Rectangle2D.Double(x, y,
                               side1,
                               side2));
 
    }
 
 
}

NOTE: I took the code for creating a rectangle from a websire.

But I dont know what to do from now on.
I want to be able to just write, after I have called the Square class:

Square(the x-position,the y-position, the side1, the side2)


My code might be a bit messy... But I hope you understand what I need help with.



thank you in advance!