JLabel Listener

Question

Is there a Listener available that will be actioned if text is changed within a JLabel?
Thanks,
Harold

Answer 1

Is there a Listener available that will be actioned if text is changed within a JLabel?PropertyChangeListener
here's a simple example - type something into the textfield, then click the button
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.beans.*;
class Testing extends JFrame
  JLabel lbl = new JLabel();
  public Testing()
    setLocation(400,300);
    setDefaultCloseOperation(EXIT_ON_CLOSE);
    JPanel jp = new JPanel(new GridLayout(1,3));
    final JTextField tf = new JTextField();
    JButton btn = new JButton("Set Text -->");
    jp.add(tf);
    jp.add(btn);
    jp.add(lbl);
    getContentPane().add(jp);
    pack();
    btn.addActionListener(new ActionListener(){
      public void actionPerformed(ActionEvent ae){
        lbl.setText(tf.getText());}});
    lbl.addPropertyChangeListener(new PropertyChangeListener(){
      public void propertyChange(PropertyChangeEvent pce){
        if(pce.getPropertyName().equals("text"))
          JOptionPane.showMessageDialog(getContentPane(),"Label changed");
  public static void main(String[] args){new Testing().setVisible(true);}
}