In Java, you can use the SplashScreen class (in awt package) to create a splash screen for your program. Alternatively, you can write your own code to create a splash screen. In this tutorial, i prefer to do the latter. First of all, you will have a class that extends the JFrame class. This class will represent the splash screen. In this tutorial, i name it as SimpleSplashScreen. The splash screen has no border and title. So will use the setUndecorated method to hide border and title. On the splash screen, there is an image that provides introductory information of the program. The JLabel component is used to wrap the image. Then it will be added on the splash screen to show the image. In the SimpleSplashScreen class, you need to add two methods. The first method (wait) allows the user to set the time delay of the splash screen. Another method (showScreen) will be invoked in the program to display the splash screen. Simply, when the time is out, the splash screen disappears and the Welcome window is shown.
This is the complete code of the SplashScreen program.
import java.awt.Container;
import java.awt.Font;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
class SimpleSplashScreen extends JFrame{
int delay=2000; //default delay time 2 seconds
SimpleSplashScreen(String imgfile){
ImageIcon iicon=new ImageIcon(imgfile);
int iwidth=iicon.getIconWidth();
int iheight=iicon.getIconHeight();
setSize(iwidth,iheight);
setLocationRelativeTo(null);
setUndecorated(true);
Container cont=getContentPane();
JLabel lbl=new JLabel();
lbl.setIcon(iicon);
cont.add(lbl);
}
//set time delay
public void wait(int mills){
delay=mills;
}
public void showScreen(){
setVisible(true); //show the screen
try {
Thread.sleep(delay); //delay the screen
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//close the SplashScreen when time out
dispose();
new MaiInterface();
}
}
class MaiInterface extends JFrame{
MaiInterface(){
setSize(400,300);
setTitle("Your main interface here");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Container cont=getContentPane();
JLabel lbl=new JLabel("Welcome");
lbl.setHorizontalAlignment(JLabel.CENTER);
lbl.setFont(new Font("Arial", Font.BOLD,30));
cont.add(lbl);
setVisible(true);
}
}
public class SplashSr {
public static void main(String[] args){
SimpleSplashScreen sss=new SimpleSplashScreen("d:/splashscreen.png");
sss.wait(5000);
sss.showScreen();
}
}
|
|
