import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.Timer;
public class Main {
public static void main(String[] args) {
int TIME_VISIBLE = 3000;
JFrame frame1 = new JFrame();
frame1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame1.setSize(100, 100);
frame1.setLocation(100, 100);
JButton button = new JButton("My Button");
frame1.getContentPane().add(button);
button.addActionListener(e -> {
JOptionPane pane = new JOptionPane("Message",
JOptionPane.INFORMATION_MESSAGE);
JDialog dialog = pane.createDialog(null, "Title");
dialog.setModal(false);
dialog.setVisible(true);
new Timer(TIME_VISIBLE, new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
dialog.setVisible(false);
}
}).start();