Problème JAVA

Bonjour,

[Code]
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import java.net.*;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.*;

public class Client extends Panel implements Runnable {
Panel PC,PA;
JPanel XX;
private TextField TF;
private TextArea TA;
private List Liste1;
private JList Liste2;
private JScrollPane jScrollPane1;
private Socket s;
DataInputStream din;
DataOutputStream dout;

public Client(String Host,int port) {
//setLayout(null);
//setBounds(10,10,400,400);

this.setLayout(null);
this.setBounds(10,10,1300,600);

PC = new Panel();
PC.setBounds(30, 30, 400, 400);
PC.setBackground(Color.GREEN);
PC.setVisible(true);

XX = new JPanel();
XX.setBounds(510, 30, 500, 400);
XX.setBackground(Color.BLACK);
XX.setVisible(true);

TextField TF = new TextField(50);
TF.setBounds(40, 40, 200, 15);
TF.setBackground(Color.blue);
TF.setSize(50,10);
PC.add(TF);

TextArea TA = new TextArea();
TA.setBounds(40,60,200,80);
TA.setBackground(Color.blue);
PC.add(TA);

JList Liste2 = new JList();
JScrollPane jScrollPane1 = new JScrollPane(Liste2);
jScrollPane1.setBounds(10,10,100,100);
jScrollPane1.setBackground(Color.red);

Liste2.setBounds(15,15,20,20);
Liste2.setBackground(Color.red);
Liste2.setSize(80,40);
//XX.add(jScrollPane1);
//XX.add(Liste2);
//Liste2.setVisible(true);

//List liste1 = new List();
//Liste1.setBounds(100,100,20,20);
//Liste1.setSize(80,40);
//PC.add(Liste1);


this.add(PC);
this.add(XX);
setVisible(true);

/Code