clientechat.java

Example mini chat developed in java.

/*
 * ClienteChat.java
 *
 * Created on 25 de abril de 2006, 13:26
 */

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.net.*;
public class ClienteChat extends JFrame 
{
// Version 1.0 Miguel Angel Abi醤 Septiembre 2002
public static void main(String[] args) throws IOException, ConnectException
{
    boolean packFrame = false;
    try 
    {
        UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
        if(args.length <= 0)
        {
            System.out.println("Falta la IP");
            JOptionPane.showMessageDialog(null,"Falta la direccion IP",
            "Informaci髇 para el usuario",
            JOptionPane.WARNING_MESSAGE);
        }
        else
        {
        ClienteChat f=new ClienteChat(args[0]);
        if (packFrame) {
        f.pack();
        }
        else 
        {
            f.validate();
        }
        Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
        Dimension frameSize = f.getSize();
        if (frameSize.height > screenSize.height) 
        {
            frameSize.height = screenSize.height;
        }
        if (frameSize.width > screenSize.width) 
        {
            frameSize.width = screenSize.width;
        }
        f.setLocation((screenSize.width - frameSize.width) / 2,
            (screenSize.height - frameSize.height) / 2);
        f.setVisible(true);
        }
    }
    catch(Exception e) 
    {
        e.printStackTrace();
        JOptionPane.showMessageDialog(null,"Error en el gestor de apariencia y"+
        "estilo",
        "Informaci髇 para el usuario",
        JOptionPane.WARNING_MESSAGE);
        System.exit(0);
    }
    }

    JPanel contentPane;
    JTextField txtMensaje = new JTextField();
    JTextArea txtArea = new JTextArea();
    JButton btnCerrar = new JButton();
    Socket scliente;
    Sesion sesion;
    PrintStream salida;
    BufferedReader entrada;
    JScrollPane scrollPane = new JScrollPane();
    JLabel lblTexto = new JLabel();
    
    public ClienteChat(String ip) {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    txtArea.setEditable(false);
    try {
    iniciar();
  /*  InetAddress direccion = InetAddress.getLocalHost();
          byte direccionIp[] = direccion.getAddress();
          int dirip[] = new int[4];      

          for(int i = 0; i<4; i++)
          {
              if(direccionIp[i] < 0)
              {
                  dirip[i] = 128+ (128+direccionIp[i]);
              }
              else
              {
                  dirip[i] = direccionIp[i];
              }
          }

          String ip = String.valueOf(dirip[0])+"."
                    + String.valueOf(dirip[1])+"."
                    + String.valueOf(dirip[2])+"."
                    + String.valueOf(dirip[3]);*/
    scliente=new Socket(ip, 9000);
    salida=new PrintStream(scliente.getOutputStream());
    entrada= new BufferedReader(new InputStreamReader(scliente.getInputStream()));
    sesion=new Sesion(this);
    sesion.start();
    }
    catch(Exception e) {
    e.printStackTrace();
    JOptionPane.showMessageDialog(null,"Fallo en la conexi髇",
    "Informaci髇 para el usuario",
    JOptionPane.WARNING_MESSAGE);
    System.exit(0);
    }
    }
    private void iniciar() throws Exception {
    contentPane = (JPanel) this.getContentPane();
    txtMensaje.setBounds(new Rectangle(117, 49, 256, 29));
    txtMensaje.addActionListener(new java.awt.event.ActionListener() {
    public void actionPerformed(ActionEvent e) 
    {
    txtMensaje_actionPerformed(e);
    }
    });
    contentPane.setLayout(null);
    this.setSize(new Dimension(400, 400));
    this.setTitle("Chat");
    btnCerrar.setText("Cerrar");
    btnCerrar.setBounds(new Rectangle(150, 323, 76, 29));
    btnCerrar.addActionListener(new java.awt.event.ActionListener() 
    {
        public void actionPerformed(ActionEvent e) 
        {
            btnCerrar_actionPerformed(e);
        }
    });
        scrollPane.setBounds(new Rectangle(9, 106, 370, 205));
        lblTexto.setBackground(Color.red);
        lblTexto.setFont(new java.awt.Font("Dialog", 1, 12));
        lblTexto.setText("Escriba texto:");
        lblTexto.setBounds(new Rectangle(17, 49, 87, 32));
        contentPane.add(txtMensaje, null);
        contentPane.add(btnCerrar, null);
        contentPane.add(lblTexto, null);
        contentPane.add(scrollPane, null);
        scrollPane.getViewport().add(txtArea, null);
    }
    protected void processWindowEvent(WindowEvent e) 
    {
        super.processWindowEvent(e);
        if (e.getID() == WindowEvent.WINDOW_CLOSING) 
        {
             salida.close();System.exit(0);
        }
    }
    void txtMensaje_actionPerformed(ActionEvent e) 
    {
        salida.println(txtMensaje.getText());
        txtMensaje.setText("");
    }
    void btnCerrar_actionPerformed(ActionEvent e) 
    {
        salida.close();
        System.exit(0);
    }
}

/*
      InetAddress direccion = InetAddress.getLocalHost();
      byte direccionIp[] = direccion.getAddress();
      int dirip[] = new int[4];      
      
      for(int i = 0; i<4; i++)
      {
          if(direccionIp[i] < 0)
          {
              dirip[i] = 128+ (128+direccionIp[i]);
          }
          else
          {
              dirip[i] = direccionIp[i];
          }
      }
      
      String ip = String.valueOf(dirip[0])+"."
                + String.valueOf(dirip[1])+"."
                + String.valueOf(dirip[2])+"."
                + String.valueOf(dirip[3]);
           
      Socket scliente= new Socket(ip,9000);
      BufferedReader entrada = new BufferedReader(new InputStreamReader(scliente.getInputStream()));
      PrintWriter salida = new PrintWriter(scliente.getOutputStream(),true);
      BufferedReader entradaConsola = new BufferedReader(new InputStreamReader(System.in));
      new threadCliente(entrada).start();
      while(true)
          salida.println(entradaConsola.readLine());      
  }    
}

class threadCliente extends Thread
{
    BufferedReader entrada;
    public threadCliente(BufferedReader entrada)throws IOException
    {
        this.entrada = entrada;
    }
    
    public void run()
    {
        String linea;
        try
        {
            while((linea=entrada.readLine())!=null)
                System.out.println(linea);            
        }
        catch(IOException e)
        {
            JOptionPane.showMessageDialog(null,"Error en la comunicacion","Informacion para el usuario",JOptionPane.WARNING_MESSAGE);            
        }
        finally
        {
            System.exit(0);
        }
    }*/
//}