Some prolems when trying to create Jar file...

Question

Hi,
1st sorry i post this in the wrong box, i posted it in the Jar box but no body replied and I really need to get this done soon...
I've got a list of *.class and a folder images and Start is the class I want to be the entry point
I tried:
1. jar cfm MyApp.jar Manifest.txt *.class images
In Manifest.txt has a line: Main-Class: Start
the jar file is created, but when I tried to run (both double click and command line) this gives me an error "Failed to load Main-Class manifest attribute from..."
2. jar cmf MyApp.jar Manifest.txt *.class images
this has error while making the jar file, it gives "java.io.FileNotFoundException: MyApp.jar (The system cannot find the file specified)...
3. I tried the 1st method, then unzip the jar file, edit the manifest.mf file by adding a line Main-Class: Start. Then zip it, rename it to MyApp.jar
And a weird thing happens... When I place the jar file IN THE SAME FOLDER with other class files, it runs fine. But when I move it to A DIFFERENT FOLDER with other class files, it runs with dimension 0x0, i.e. only the title bar is displayed...
I've tried those method and none of them work... can some one tell me what I have done wrong?
Thanks...

Answer 1

This is the class used to get the ImageIcon for the JLabel
public class CardGUI extends JPanel {
     private ImageIcon tmp;
     private final int CARDWIDTH = 50; //Card width is 50
     //return the Card GUI
     public ImageIcon getCardGUI (int kind, char suit) {
          //This String is used to locate the file (*.png)
          //of each Card
          //E.g. Card 2 Club will has file "images/cards/2c.png"
          String imgStr = "images/cards/" + kind + suit + ".png";
          tmp = new ImageIcon(imgStr);
          //If the card is not found, return the back of the Card
          if (tmp.getIconWidth()!= CARDWIDTH) {
               tmp = new ImageIcon("images/cards/back.png");
          return tmp;
}Then the JLabel used this to set the image, where humanCard1 is an instance of JLabel, and cardLabel is instance of the above class.
humanCard1.setIcon(cardLabel.getCardGUI(card10.getKind(), card10.getSuit()));
> new ImageIcon("images/mainbackground.jpg")Wrong. Because there are any more no files in a jar archive. Only file is the jar file itself, and nothing else.
What do u mean? When I create the jar file, i include the images folder inside the jar file already?
I've been using the Swing forum and that's how I know the 2 methods above for setting image for JLabel and JPanel... So what should i be searching for in the Swing forum now?