Link JTextField with System.out in Java

import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.text.AbstractDocument;
/*from   w  w w  .j a va  2  s .com*/
public class Main {
  public static void main(String[] args) {
    JFrame f = new JFrame("Text Field Elements");
    JTextField tf = new JTextField(32);
    tf.setText("That's one small step for man...");
    f.getContentPane().add(tf);
    f.pack();
    f.setVisible(true);

    ((AbstractDocument)tf.getDocument()).dump(System.out);
  }
}