Redirecting System.in , System.out to JTextArea

Hello,

  I need to know how to redirect System.in and System.out to a
JTextArea. The following is my initial attempt to write it's code. I
know it's missing alot (maybe major) stuff.

--begin--
import javax.swing.*;
import java.awt.*;
import java.io.*;
import java.awt.event.*;

class ConsolePanel extends JPanel implements KeyListener{

    private JTextArea consoleTextArea;
    private ByteArrayInputStream inStream;
    private ByteArrayOutputStream outStream;
    //private byte[] bufferByteArray;

    public ConsolePanel()
    {
        super();

        outStream = new ByteArrayOutputStream();

         Runnable r = new Runnable() {
         public void run() {
             try {
                 while(outStream.size()!= 0)
                 {
                  consoleTextArea.setText(outStream.toString());
                 }
             } catch (Exception ie) {
                 ie.printStackTrace();
             }
         }
        };
        new Thread(r).start();

        consoleTextArea = new JTextArea();
        setLayout(new GridLayout(1,1));

        this.setBorder(BorderFactory.createLineBorder(Color.gray));
        add(consoleTextArea);

    }

    public ByteArrayOutputStream getOutputStream()
    {
        return outStream;
    }

    public ByteArrayInputStream getInputStream()
    {

        return inStream;
    }

    public void keyTyped(KeyEvent e) {}

    public void keyReleased(KeyEvent e) {}

   public void keyPressed(KeyEvent e) {
   String line = "";

    int key = e.getKeyCode();
    if (key != KeyEvent.VK_ENTER) {
    line += ""+ e.getKeyChar();
      }
      else
      {
       try
      {
      inStream = new ByteArrayInputStream(line.getBytes());
         //inStream.read(line.getBytes());
         }catch(Exception exc)
         {
         exc.printStackTrace();
        }

      }
     }

}

--end---

What i am trying to do is to connect an InputStream and and an
OutputStream to the textArea. After that is done , ill get the in/out
stream from another class by the methods "getOutputStream()" and
"getInputStream()" and do System.setIn() and System.setOut from the
class that got a hold of the stream objects by the previously
mentioned methods.

What am i doing wrong ? (I know im doing alot wrong , but im kinda new
to I/O).

Thanx in advance for ur help

Ahmed Ashmawy