How to store objects from a class inn an array?

Hey, im working on a program where i need to use the objects wich i get from the class "Borrehull" and store them inn an array.

Code Java:

import java.io.Serializable;
 
 
public class Borrehull implements Serializable{
 
	private int x;
    private int y;
    private int d;
 
	 public Borrehull (int xkoord,int ykoord,int dim){
	    x=xkoord;
	    y=ykoord;
	    d=dim;
	  }
 
	  public int getx() {
	    return x;
	  }
 
	  public int getd() {
	    return d;
	  }
 
	  public int gety() {
	    return y;
	  }
}

i am using a mouse actionlistener in the "main" program where i get the x and y koordinates when i click on the frame and the dim can i adjust with some grouped radiobuttons, here is the part og the "main" program where i get the x and y koordinates with getX() and getY():

Code Java:

 
class Tegne extends JPanel {//starts Tegne extends JPanel
 
public Tegne() {//starts Tegne
 
 
	//create a mouselistener
	addMouseListener(new MouseListener(){
 
		public void mouseClicked(MouseEvent arg0) {
			if (arg0.getButton()==1)//mouse left button
			{
 
			y=arg0.getY();
		             x=arg0.getX();
 
			panel();
			repaint();
			}
		}
 
		public void mouseEntered(MouseEvent arg0){} 
		public void mouseExited(MouseEvent arg0){} 
		public void mousePressed(MouseEvent arg0){}	
		public void mouseReleased(MouseEvent arg0){} 	
 
	});
 
}//ends Tegne	
 
	protected void paintComponent(Graphics g){
 
		super.paintComponent(g);			                           
									g.setColor(Color.red);
			if(x>0|y>0 & diameter>0)g.fillOval(x,y ,diameter*2 ,diameter*2);
		}
 
}//ends Tegne extends JPanel

all help will be much appreciated(: