import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
import javax.swing.JWindow;

public class SplashDemo {

	private static final int SHOW_FOR = 3000;

	public SplashDemo() {
	    JFrame frame = new JFrame("Splash-Demo");
		new Splash("img/rot300x200.png", SHOW_FOR, frame);
		frame.setVisible(false);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setSize(500, 400);
		frame.setLocationRelativeTo(null);
	}

    public static void main(String[] args) {
        SwingUtilities.invokeLater(() -> new SplashDemo());
    }
}

class Splash extends JWindow {
	private int min = 0, max = 100;
	private boolean show = true;
	final JProgressBar progressBar = new JProgressBar(min, max);

	public Splash(final String imgPath, final int showFor, final JFrame frame) {

		this.setBackground(Color.WHITE);
		// Mausevent setzt bei Klick die Hilfsvariable show auf false, beendet
		// damit den Splashscreen und öffnet das Hauptfenster, sofern es
		// geladen ist.
		this.addMouseListener(new MouseAdapter() {
			public void mousePressed(MouseEvent e) {
				show = false;
				setVisible(false);
				dispose();
			}
		});

		// Splash-Hauptsteuerung
		final Timer timer = new Timer(showFor);
		Thread wRunner = new Thread() {
			public void run() {
				timer.start();
				// Splash zeigen solange er nicht unterbrochen wird (show=false)
				// oder das Anzeigeintervall abgelaufen ist.
				while (show && timer.counter <= showFor) {
					Splash.this.setVisible(true);
				}
				// Splash beenden
				Splash.this.setVisible(false);
				Splash.this.dispose();
				// Hauptfenster anzeigen
				frame.setVisible(true);
			}
		};

		// Progressbar-Thread
		final Runnable pbRunner = new Runnable() {
			public void run() {
				System.out.println("running progress bar");
				for (int i = min; i <= max; i++) {
					try {
						Thread.sleep(showFor / max);
					} catch (InterruptedException e) {
					}
					progressBar.setValue(i);
				}
			}
		};

		// Splash-GUI
		JPanel contentPane = new JPanel();
		this.setContentPane(contentPane);
		contentPane.setLayout(new BorderLayout());
		ImageIcon icon = new ImageIcon(ClassLoader.getSystemResource(imgPath));
		this.setSize(icon.getIconWidth(), icon.getIconHeight());
		contentPane.add(new JLabel(icon, JLabel.CENTER), BorderLayout.CENTER);
		contentPane.add(progressBar, BorderLayout.SOUTH);
		this.setLocationRelativeTo(null);
		this.setVisible(true);
		new Thread(wRunner).start();
		new Thread(pbRunner).start();
	}
} // class Splash

class Timer extends Thread {
	int counter = 0, showFor;

	public Timer(int showFor) {
		this.showFor = showFor;
	}

	public void run() {
		System.out.println("timer running");
		while (counter <= showFor) {
			try {
				Thread.sleep(1);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
			counter++;
		}
	}
} // class Timer