Java SplashScreen & JProgressBar

import java.awt.*;
import javax.swing.*;

public class SplashScreen extends JWindow {

private Frame parent;
private JProgressBar progressBar;
private JLabel splashImage;

public SplashScreen(final Frame f, String fileName){

super(f);
parent = f;

splashImage = new JLabel();
splashImage.setIcon(new ImageIcon(fileName));

progressBar = new JProgressBar();
progressBar.setBorderPainted(true);
progressBar.setStringPainted(true);
progressBar.setMaximum(10);

getContentPane().add(splashImage, BorderLayout.CENTER);
getContentPane().add(progressBar, BorderLayout.SOUTH);
pack();

Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
Dimension labelSize = splashImage.getPreferredSize();
setLocation(screenSize.width/2 -  (labelSize.width/2),
screenSize.height/2 – (labelSize.height/2));
}

public void showSplash(int waitTime){

final int pause = waitTime;

final Runnable closerRunner = new Runnable(){
public void run(){
setVisible(false);
dispose();
parent.setVisible(true);
}
};

Runnable waitRunner = new Runnable(){
public void run(){
try{
for (int i=1; i<=10; i++){
setProgress(i);
Thread.sleep(pause);
}
SwingUtilities.invokeAndWait(closerRunner);
}
catch(Exception e){
e.printStackTrace();
}
}
};

setVisible(true);
Thread splashThread = new Thread(waitRunner, “SplashThread”);
splashThread.start();
}

private void setProgress(int current){

final int progress = current;
final String status = “Loading… ” + current * 10 + ” %”;

SwingUtilities.invokeLater(new Runnable(){
public void run() {
progressBar.setValue(progress);
progressBar.setString(status);
}
});
}

}

*Cara penggunaan (pemanggilan dari class lain) :

SplashScreen splashScreen =
new SplashScreen(this, “YOUR IMAGE FILE HERE”);

splashScreen.showSplash(150);

Mengatur letak JFrame pada dekstop

Berikut ini adalah metode (method) dalam Java yang digunakan untuk mengatur letak JFrame atau kontainer Java ke tengah layar monitor (destop)

// Memindahkan window ke tengah screen monitor
private void setWindowToCenter(){

// Mencari ukuran screen monitor
Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();

// Menghitung ukuran window
int w = getSize().width;
int h = getSize().height;
int x = (screen.width-w)/2;
int y = (screen.height-h)/2;

// Memindahkan window ke tengah screen
setLocation(x, y);
}