Register several listeners for one event.
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSpinner;
public class MultipleListeners {
JLabel statusbar = new JLabel("0");
JSpinner spinner = new JSpinner();
static int count = 0;
class ButtonListener1 implements ActionListener {
public void actionPerformed(ActionEvent e) {
Integer val = (Integer) spinner.getValue();
spinner.setValue(++val);
}
}
class ButtonListener2 implements ActionListener {
public void actionPerformed(ActionEvent e) {
statusbar.setText(Integer.toString(++count));
}
}
public MultipleListeners() {
JPanel panel = new JPanel();
JButton add = new JButton("+");
add.addActionListener(new ButtonListener1());
add.addActionListener(new ButtonListener2());
panel.add(add);
panel.add(spinner);
JFrame f = new JFrame();
f.add(panel);
f.add(statusbar, BorderLayout.SOUTH);
f.setSize(300, 200);
f.setLocationRelativeTo(null);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setVisible(true);
}
public static void main(String[] args) {
new MultipleListeners();
}
}
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