ecco il codice :
codice:
import java.applet.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.UnknownHostException;
public class server extends JApplet {
    Socket connessione;
    ServerSocket richiesta;
    JPanel pannello = new JPanel();
    JTextField casella = new JTextField(40);
    JTextArea testo = new JTextArea(20, 30);
    JButton entra = new JButton("ENTRA IN CHAT");
    public server() {
        pannello.add(testo);
        pannello.add(casella);
        pannello.add(entra);
        add(pannello);
        testo.setBackground(Color.BLACK);
        testo.setForeground(Color.BLUE);
        entra.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                try {
                    richiesta = new ServerSocket(8888);
                    connessione = richiesta.accept();
                } catch (IOException e2) {
                    e2.printStackTrace();
                }
            }
        });
        casella.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                String input;
                input = casella.getText();
                testo.setText(input);
                OutputStreamWriter osw;
                PrintWriter invialo;
                BufferedWriter alclient;
                try {
                    osw = new OutputStreamWriter(connessione.getOutputStream());
                    alclient = new BufferedWriter(osw);
                    invialo = new PrintWriter(alclient);
                    invialo.println(input);
                } catch (UnknownHostException e1) {
                    // TODO Auto-generated catch block
			e1.printStackTrace();
                } catch (IOException e1) {
                    // TODO Auto-generated catch block
			e1.printStackTrace();
                }
            }
        });
        int sec = 1;
        ActionListener action = (new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                BufferedReader dalclient;
                InputStreamReader isr;
                try {
                    isr = new InputStreamReader(connessione.getInputStream());
                    dalclient = new BufferedReader(isr);
                    String ricevi;
                    String messaggio = testo.getText();
                    System.out.println("timer attivo");
                    while (dalclient.readLine() != "") {
                        ricevi = dalclient.readLine();
                        testo.setText(messaggio + ricevi);
                    }
                } catch (IOException e1) {
                    // TODO Auto-generated catch block
			e1.printStackTrace();
                }
            }
        });
        javax.swing.Timer t = new javax.swing.Timer(sec, action);
        t.start();
    }
    public static void main(String Args[]) {
        server esegui = new server();
    }
}
il pratica l'errore è in connessione=server.accept();

perche quando clicco sul pulsante entra in chat il programma si blocca non capisco perche
aiutatemi grazie 1000