prova cosi
jButton1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent h) {
if (jPanel1.isVisible())
jPanel1.setVisible(false)
else
if (!jPanel1.isVisible())
jPanel1.setVisible(false)
}
});
prova cosi
jButton1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent h) {
if (jPanel1.isVisible())
jPanel1.setVisible(false)
else
if (!jPanel1.isVisible())
jPanel1.setVisible(false)
}
});