Question about Jar!

Question

Hi there!
I work on a minesweeper clone (as i mentioned in a previous thread) with Eclipse 3!
I completed most of my work, so i wanted to find out if the game works without Eclipse, but it does not.
When I start it with Eclipse everything works the way I want it (except one thing), but when i put everything in a jar-file (using Eclipse) one problem occurs:
When you hit a button, that is surrounded by (let's say) three mines, I use the setImage() method to put an image on that button, that is a little three. As mentioned, when I use Eclipse and start the game this works perfectly, but when I try it with the jar-File it does not, although the Jar-File does conatin the images.
This is how I load the images:
gameButtons[x][y].setIcon(new ImageIcon("images/" + String.valueOf(count) + .pg"));The other problem (that I mentioned above) is that the restart of the game does not work properly. I have the folloowing:
     public void setDifficulty(Difficulty difficulty){
               lowerPanel.removeAll();
                * Set the number of buttons and the size of the window
                * depending on the difficulty level
               gameButtons = new GameButton[difficulty.width][difficulty.height];
               for (int y = 0; y < difficulty.height; y++){
                    for (int x = 0; x < difficulty.width; x++){
                         gameButtons[x][y] = new GameButton("");
                         gameButtons[x][y].setPreferredSize(buttonSize);
                         gameButtons[x][y].addMouseListener(gameButtonListener);
                         gameButtons[x][y].setActionCommand(x + " " + y);
                         lowerPanel.add(gameButtons[x][y]);               
               lowerPanel.setLayout(new GridLayout(difficulty.height, difficulty.width));
                * Add the mines to the game
               mines  = new Mine[difficulty.numMines];
               count = 0;
               set  = new HashSet();
               while (count < difficulty.numMines){               
                    int x = generateXPos(difficulty.width);
                    int y = generateYPos(difficulty.height);
                    result = x + " " + y;                         
                    inserted = set.add(result);
                    if (!inserted){
                         continue;
                    else{     
                         mines[count] = new Mine(x, y);
                         count++;
               fieldWidth = difficulty.width;
               fieldHeight = difficulty.height;
               numMines = difficulty.numMines;
               Window.difficulty = difficulty;
               diff = difficulty.diff;
               pack();
     }     In detail the problem is that when I restart the game the buttons, that were clicked in the game before do not work any more, they simply do not react to the click.
Any suggestions on one of the problems?

Answer 1

Sounds like you're trying to create an executable jar when you say "then run it."
If so, then you'll need to add a manifest file too. It should contain the name of the "Main" program. It looks something like this:
Manifest-Version: 1.0
Main-Class: mypackage.Main
Put that in a file named manifest or whatever.
The jar command is:
jar cfm jarfile.jar manifest *