Member Avatar for toomuchfreetime

Hey

I'm trying to get a splash screen going for my application but having a problem in finding the image once the splash screen is called it returns a null.

I'm trying to use the java standard 6 way where the splash screen is displayed before the jvm is started and is displayed until a swing or awt container is displayed.

if (splash == null) {
            System.out.println("SplashScreen.getSplashScreen() returned null");
            return;
        }

it fails at this point and returns null and continues on with the rest of the program as normal.

full code is as follows

package tree;


import java.awt.*;
import java.awt.event.*;

public class splashScreen extends Frame implements ActionListener {
    static void renderSplashFrame(Graphics2D g, int frame) {
        final String[] comps = {"foo", "bar", "baz"};
        g.setComposite(AlphaComposite.Clear);
        g.fillRect(130,250,280,40);
        g.setPaintMode();
        g.setColor(Color.BLACK);
        g.drawString("Loading "+comps[(frame/5)%3]+"...", 130, 260);
        g.fillRect(130,270,(frame*10)%280,20);
    }
    public splashScreen() {
        super("SplashScreen demo");
        setSize(500, 300);
        setLayout(new BorderLayout());
        Menu m1 = new Menu("File");
        MenuItem mi1 = new MenuItem("Exit");
        m1.add(mi1);
        mi1.addActionListener(this);

        MenuBar mb = new MenuBar();
        setMenuBar(mb);
        mb.add(m1);
        final SplashScreen splash = SplashScreen.getSplashScreen();
        
        if (splash == null) {
            System.out.println("SplashScreen.getSplashScreen() returned null");
            return;
        }
        Graphics2D g = (Graphics2D)splash.createGraphics();
        if (g == null) {
            System.out.println("g is null");
            return;
        }
        for(int i=0; i<100; i++) {
            renderSplashFrame(g, i);
            splash.update();
            try {
                Thread.sleep(200);
            }
            catch(InterruptedException e) {
            }
        }
        splash.close();
        setVisible(true);
        toFront();
    }
    public void actionPerformed(ActionEvent ae) {
        System.exit(0);
    }
    public static void main (String args[]) {
        splashScreen test = new splashScreen();
    }
}

The manifest code is

Manifest-Version: 1.0
Main-Class: tree/splashScreen
SplashScreen-Image: tree/splash.png

not sure if i have this right so this is my file format :

myTree      -project name
   scr
         HelpPanells                          -package
         tree                                     -package
           splashScreen.java
           splash.png
                            tree.exercises               -package
                            tree.exercises.pictures   -package
                            tree.icon                       -package

this is just a basic representation of the project hope it helps you to help me as i'm stumped at this point

Thanks

  • 3 Contributors
  • 2 Replies
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  • 2 Years Discussion Span
  • Latest Post Latest Post by rahul4/69
Member Avatar for rahul4/69

sir the program i have attached with my reply moves the tray left/right depending on the key pressed(left/right).and now i want a ball to come and hit this tray and then bounces back.please suggest me something

Edited by Nick Evan because: Removed tex-tags
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