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Splash screen in netbeans 6.0

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Join Date: Nov 2006

Posts: 29

Reputation: toomuchfreetime is an unknown quantity at this point

Solved Threads: 1

toomuchfreetime toomuchfreetime is offline

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Splash screen in netbeans 6.0

Apr 24th, 2008

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.

 Help with Code Tags 
 java Syntax (Toggle Plain Text) 
if (splash == null) {
            System.out.println("SplashScreen.getSplashScreen() returned null");
            return;
        }
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

 Help with Code Tags 
 java Syntax (Toggle Plain Text) 
 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();
    }
}
 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

 Help with Code Tags 
 java Syntax (Toggle Plain Text) 
Manifest-Version: 1.0
Main-Class: tree/splashScreen
SplashScreen-Image: tree/splash.png
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 :

 Help with Code Tags 
 Java Syntax (Toggle Plain Text) 
myTree      -project name
   scr
         HelpPanells                          -package
         tree                                     -package
           splashScreen.java
           splash.png
                            tree.exercises               -package
                            tree.exercises.pictures   -package
                            tree.icon                       -package
myTree      -project name
   scr
         HelpPanells                          -package
         tree                                     -package
           splashScreen.java
           splash.png
                            tree.exercises               -package
                            tree.exercises.pictures   -package
                            tree.icon                       -package