Splash Screen in Java Swing

i wrote this code for splash screen but i'm unable to connect to my main code so i humble request you to plzz how can i connect to my main code.

package Com.Demo;

import javax.swing.ImageIcon; import javax.swing.JLabel; import javax.swing.JWindow; import javax.swing.SwingConstants;

class SplashScreen {

public static void main(String[]args) {
JWindow window = new JWindow();
window.getContentPane().add(new JLabel("",new ImageIcon("C:/Users/Ashish/eclipse-workspace/Demo/src/Com/Demo/SplashScreen.gif"),SwingConstants.CENTER));
window.setBounds(500, 250, 450, 300);
window.setVisible(true);
try{
    Thread.sleep(5000);
}
catch(InterruptedException e) {}
window.dispose();
}

}