The number of mouse event mousePressed created by double click is odd. Sometimes, mousePressed is reported 3 times on double click.

STEPS: JDK 1.1.6

1. Run attached code on Windows NT/95
2. Double click the button and observe number increasing.
Left box shows mouseClicked, center for mousePressed, right is mouseReleased. All three value shold be same. But mousePressed increasing by 3 when double click on button.

-----
import java.io.*;
import java.awt.*;
import java.awt.event.*;

public class TestApp2A extends Frame implements MouseListener {
TextField click = new TextField("0");
TextField press = new TextField("0");
TextField release = new TextField("0");
Button b = new Button("Double Click!!");

public static void main(String args[]) {
TestApp2A ta2A = new TestApp2A();
}
public TestApp2A() {
addWindowListener(new WindowAdapter() {
public void windowClosing( WindowEvent e ) {
System.exit(0);
}
});

b.addMouseListener(this);

setTitle("test window");
setLayout(new FlowLayout(FlowLayout.LEFT));
setSize(300, 100);
add(click);
add(press);
add(release);
add(b);
setVisible(true);
}

public void mouseClicked(MouseEvent e) {
int i = new Integer(click.getText()).intValue();
i++;
click.setText(new Integer(i).toString());
}

public void mousePressed(MouseEvent e) {
int i = new Integer(press.getText()).intValue();
i++;
press.setText(new Integer(i).toString());
}

public void mouseReleased(MouseEvent e) {
int i = new Integer(release.getText()).intValue();
i++;
release.setText(new Integer(i).toString());
}

public void mouseEntered(MouseEvent e) {
}

public void mouseExited(MouseEvent e) {
}
}

koushi.takahashi@japan 1998-06-16