Re: 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