Passive TextField 1 : TextField « Swing JFC « Java

Passive TextField 1

Passive TextField 1
Core SWING Advanced Programming 
By Kim Topley
ISBN: 0 13 083292 8       
Publisher: Prentice Hall  

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;

import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.KeyStroke;
import javax.swing.UIManager;
import javax.swing.text.Keymap;

public class PassiveTextField1 extends JTextField {

  public static void main(String[] args) {
    JFrame f = new JFrame("Passive Text Field");
    f.getContentPane().setLayout(new BoxLayout(f.getContentPane(), BoxLayout.Y_AXIS));
    final JTextField ptf = new JTextField(32);
    JTextField tf = new JTextField(32);
    JPanel p = new JPanel();
    JButton b = new JButton("OK");

    Keymap map = ptf.getKeymap(); // Gets the shared map
    KeyStroke key = KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0);

    ActionListener l = new ActionListener() {
      public void actionPerformed(ActionEvent evt) {
        System.out.println("Action event from a text field");

    // Make the button the default button
    b.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent evt) {
        System.out.println("Content of text field: <" + ptf.getText()
            + ">");


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