Problème SWING

import javax.swing.JFrame;
 
public class Test {
 
	public static void main(String[] args) {
 
		MyKeyAdapter adapt = new MyKeyAdapter();
		JFrame fen = new JFrame();
		fen.setTitle("salut");
		fen.setSize(400,200);
		fen.addKeyListener(adapt);
		Table tab = new Table();
		fen.setContentPane(tab);
		fen.setVisible(true);
		fen.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		
 
		int i = 100;
		while (i > 0) {
 
			ThreadA  tA = new ThreadA(adapt.doAction(),tab);
			tA.start();
 
			ThreadB  tB = new ThreadB(adapt.doAction2());
			tB.start();
 
		        try { 
                               Thread.sleep(60); 
                        }
		        catch (InterruptedException ie) { 
                               ie.printStackTrace(); 
                        } 
               } 
       }
}

import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

public class MyKeyAdapter extends KeyAdapter {
	
	private boolean isAPressed = false;
	private boolean isBPressed = false;
	
	public void keyPressed(KeyEvent e) {
		if(e.getKeyCode()== 0x41) {
			isAPressed = true; }
		if(e.getKeyCode()== 0x42) {
			isBPressed = true; } }
	
	public void keyReleased(KeyEvent e) {
		if(e.getKeyCode()== 0x41) {
			isAPressed = false; }
		if(e.getKeyCode()== 0x42) {
			isBPressed = false; } }
	
	public boolean doAction() {
		return isAPressed; }
	
	public boolean doAction2() {
		return isBPressed; } }

class ThreadA extends Thread {
 
	private boolean joueur1;
	Table tab ;
 
	public ThreadA(boolean joueur1,Table tab) {
	          this.joueur1 = joueur1; 
	          this.tab = tab;
        }
 
	public void run() {
		if(joueur1 == true) {
			System.out.println(joueur1 + " Salut.");
			tab.setPosYHRG(tab.getPosYHRG()+10);
			tab.repaint();
		}
	} 
}

class ThreadB extends Thread {
	
	private boolean joueur1;
	
	public ThreadB(boolean joueur1) {
	this.joueur1 = joueur1; }
	
	public void run() {
		if(joueur1 == true)
			System.out.println(joueur1 + " Coucou."); } }

import java.awt.Color;
import java.awt.Graphics;
import javax.swing.JPanel;


public class Table extends JPanel {
	
	private int posXLT = 10;
	private int posYHT = 10;
	
	private int posXLRG = 10;
	private int posYHRG = 10;
	
	private int posXLRD = 10;
	private int posYHRD = 10;
	
	public void paintComponent (Graphics g) {
		
		g.setColor(new Color(240,240,240));
		g.fillRect(posXLT, posYHT, (this.getWidth()-posXLT*2), (this.getHeight()-posYHT*2));
		g.setColor(new Color(0,0,0));
		g.fillRect(posXLRG,posYHRG+10,(this.getHeight()/8/4),(this.getHeight()/8));
		g.fillRect(this.getWidth()-20-(this.getHeight()/8/4),posYHRD+10,(this.getHeight()/8/4),(this.getHeight()/8)); }
	

	public int getPosYHRG() {
		return posYHRG; }

	public void setPosYHRG(int i) {
		posYHRG = i;
	} }