Thread: Idk what is wrong

Hi folks,

I'm a beginner to programming and for school i had to make an app that would have a ball bouncing horizontal between the frame.
there must be a button at the bottom to switch from direction.

now i've made a litle script, but ofcourse it doesn't work.
could someone help me out?

Frame:

 package Oefening4_4;
 
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
 
import test.AutoBalKnoppenBalk;
 
public class Frame extends JFrame {
 
	public Frame()
	{
		JFrame venster = new JFrame();
		venster.setSize(600,400);
		venster.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		venster.setTitle("Oefening 4.4");
		venster.setLocation(100,100);
		venster.setVisible(true);
 
		 BalPaneel ballenPaneel = new BalPaneel();
		 add( ballenPaneel, BorderLayout.CENTER );
 
		 KnoppenPaneel Knoppen = new KnoppenPaneel( ballenPaneel );
		 add( Knoppen, BorderLayout.SOUTH );
 
	}
 
	public static void main(String[] args) 
	{
		new Frame();
	}
}

BalPaneel:

 package Oefening4_4;
 
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
 
 
public class BalPaneel extends JPanel implements ActionListener {
 
	/**
	 * Delay = delay for the timer
	 * 
	 * veranderRichting = change direction
	 * 
	 * verplaatsX = move horizontal
	 */
 
	public Bal Bal1;
	public final int Delay = 30;
 
	public BalPaneel() {
 
		Bal1 = new Bal(200, 100, Color.orange, 4);
		Timer autoKlik = new Timer(Delay, this);
		autoKlik.start();
	}
 
	public void veranderRichting()
	{
		Bal1.veranderRichting();
    }
 
	public void verplaatsX() {
		Bal1.verplaatsX();
	}
 
	public void paintComponent( Graphics g )
	{
	    super.paintComponent( g );
	    Bal1.teken( g );
	}
 
 
	public void actionPerformed( ActionEvent e )
	{
	    Bal1.verplaatsX();
	    repaint();
	}
}

KnoppenPaneel:

 package Oefening4_4;
 
import java.awt.*;
import java.awt.event.*;
 
import javax.swing.*;
 
/**
 * wissel = button to change from direction
 * @author Rick
 *
 */
 
 
public class KnoppenPaneel extends JPanel implements ActionListener {
 
	private JButton wissel;
	BalPaneel ballenPaneel;
 
	public KnoppenPaneel( BalPaneel ballenPaneel) {
 
		wissel = new JButton("Wissel van richting");
		wissel.addActionListener(this);
		add(wissel);
	}
 
	public void actionPerformed(ActionEvent e) {
		if (e.getSource() == wissel) {
			ballenPaneel.veranderRichting();
		}
		else {
			System.out.println("Dit is knoppenpaneel else");
		}
	}
 
}

Bal:

 package Oefening4_4;
 
import java.awt.Color;
import java.awt.Graphics;
 
public class Bal {
		int x = 200;
		int y = 200;
		int grootte = 150;
		private Color kleur;
		private int snelheid;
 
		public Bal(int x, int verPos, Color kleur, int snelheid) {
			this.x = x;
			this.y = verPos;
			this.grootte = grootte;
			this.kleur = kleur;
			this.snelheid = snelheid;	
		}
 
		public void verplaatsX() {
			x += snelheid;
			if (x <= 0) {
				veranderRichting();
			}else {
				x += snelheid;
			}
		}
 
		 public void veranderRichting()
		  {
		    snelheid = - snelheid;
		    if (x >= 600 - grootte) {
		    	verplaatsX();
		    }else {
		    veranderRichting();	
		    }
		  }
 
 
	  public void teken( Graphics g )
	  {
	    g.setColor( Color.orange );
	    g.fillOval( x, y, grootte, grootte);
 
	    g.setColor( Color.BLACK );
	    g.drawOval( x, y, grootte, grootte );
 
	    g.drawOval( x + grootte / 4, y, grootte / 2, grootte ); 
	  }
}

all i see = the frame. no ball and no button

(it's in dutch with some english explaination)

srry for my bad english

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