Block mouse and key events in an application : GlassPane « Swing « Java Tutorial

1. Java Tutorial
2. Swing
3. GlassPane

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.GridLayout;
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.JProgressBar;

public class Main extends JFrame {
  JPanel glass = new JPanel(new GridLayout(0, 1));
  JLabel padding = new JLabel();
  JProgressBar waiter = new JProgressBar(0, 100);


  public Main() {
    setSize(300, 300);
    setDefaultCloseOperation(EXIT_ON_CLOSE);

    JPanel controlPane = new JPanel(new GridLayout(2, 1));
    controlPane.setOpaque(false);
    controlPane.add(new JLabel("Please wait..."));
    controlPane.add(waiter);
    glass.setOpaque(false);
    glass.add(padding);
    glass.add(new JLabel());
    glass.add(controlPane);
    glass.add(new JLabel());
    glass.add(new JLabel());
    glass.setSize(new Dimension(300,300));

    setGlassPane(glass);


    JButton startB = new JButton("Start!");

    startB.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent A) {
        glass.setVisible(true);
        padding.requestFocus();
      }
    });
    Container contentPane = getContentPane();
    contentPane.add(startB, BorderLayout.SOUTH);
  }
  public static void main(String[] args) {
    Main ge = new Main();
    ge.setVisible(true);
  }
}