private void redirectSystemStreams() {
		  OutputStream out = new OutputStream() {
		    @Override
		    public void write(int b) throws IOException {
		      updateTextArea(String.valueOf((char) b));
		    }
		 
		    @Override
		    public void write(byte[] b, int off, int len) throws IOException {
		      updateTextArea(new String(b, off, len));
		    }
		 
		    @Override
		    public void write(byte[] b) throws IOException {
		      write(b, 0, b.length);
		    }
		  };
		 
		  System.setOut(new PrintStream(out, true));
		  System.setErr(new PrintStream(out, true));
		}