Build project - paint component in Panel not visible.

When i run my game in netbeans the playground is beeing drawn with a paintcomponent and i can play the game.

When i build the poject and i start the Jar file. My paintComponent is the only thing thats not beeing drawn. Everything else works.

What can this be?

Any code that might help us help you?
Without it we're merely guessing.

Hi Tolls,

I got two panels in one frame and this is the playgroundpanel.
In the IDE it works perfrect, but outside of the IDE (JAR) the paintcomponent is not beeing drawn.

Code:

---


package view;

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;

import controller.PlaygroundController;
import controller.SpelHandler;
import model.*;

class PlaygroundPanel extends JPanel implements KeyListener
{
    private Playground playground;
    private PlaygroundController control;
    private boolean useGrid;
    private Spel spel;
    private Image speler;

    /*
    * @type: constructor
    * @param: spel, itemHeight, itemWidth, rows, columns, useGrid
    */
    public PlaygroundPanel(Spel spel, int itemHeight, int itemWidth, int rows, int columns, boolean useGrid)
    {
        // zet de playground
        this.playground = spel.getPlayground();

        // op een nieuwe controler voor de playground
        this.control = new PlaygroundController(this.playground, itemHeight, itemWidth, rows, columns);
        this.useGrid = useGrid;
        //Defineer spel en frame voor de next playground
        this.spel = spel;
        this.speler = Toolkit.getDefaultToolkit().getImage("src/images/soko.png");

        // voeg keylistener toe aan dit panel
        addKeyListener(this);
    }

    /*
    * @type: override
    * @param: g
    */
    @Override
    public void paintComponent(Graphics g)
    {
        // zet achtergrond kleur en teken panel
        g.setColor(new Color(83, 83, 83));
        g.clearRect(0, 0, this.control.getPanelWidth(), this.control.getPanelHeight());
        g.fillRect(0, 0, this.control.getPanelWidth(), this.control.getPanelHeight());

        g.setColor(new Color(225,225,225));
        g.drawString("Aantal stappen: " + this.playground.speler.getAantalStappen(), 10, 20);

        // teken eindpunten (statisch)
        Image eindpunt = Toolkit.getDefaultToolkit().getImage("src/images/endpoint.png");
        for(Eindpunt item : this.playground.eindpuntenLijst)
            g.drawImage(eindpunt, item.getXIndex()*this.control.getItemWidth(), item.getYIndex()*this.control.getItemHeight(), this);

        // teken muren (statisch)
        Image muur = Toolkit.getDefaultToolkit().getImage("src/images/wall.png");
        for(Muur item : this.playground.murenLijst)
            g.drawImage(muur, item.getXIndex()*this.control.getItemWidth(), item.getYIndex()*this.control.getItemHeight(), this);

        // teken kisten (dynamisch)
        for(Kist item : this.playground.kistenLijst)
        {
            Image kist = Toolkit.getDefaultToolkit().getImage("src/images/chest.png");

            if(item.getOpEindpunt())
                kist = Toolkit.getDefaultToolkit().getImage("src/images/endpoint_chest.png");

            g.drawImage(kist, item.getXIndex()*this.control.getItemWidth(), item.getYIndex()*this.control.getItemHeight(), this);
        }

        // teken speler (dynamisch)
        g.drawImage(this.speler, this.playground.speler.getXIndex()*this.control.getItemWidth(), this.playground.speler.getYIndex()*this.control.getItemHeight(), this);

        // controleer of grid wordt gebruikt
        if(this.useGrid)
        {
            g.setColor(Color.BLACK);

            // teken grid rijen
            for(int i = 0; i <= this.control.getRows(); i++)
                g.drawLine(0, i*this.control.getItemHeight(), this.control.getPanelWidth(), i*this.control.getItemHeight());

            // teken grid kolommen
            for(int i = 0; i <= this.control.getColumns(); i++)
                g.drawLine(i*this.control.getItemWidth(), 0, i*this.control.getItemWidth(), this.control.getPanelHeight());
        }
    }


    /*
    * @type: method
    * @param: key
    */
    public void keyPressed(KeyEvent key)
    {
        // definieer aantal stappen
        int aantalStappenOud = this.playground.speler.getAantalStappen();

        switch(key.getKeyCode())
        {
            // direction 1 (omlaag)
            case KeyEvent.VK_DOWN:
                this.control.replaceVertical(1, 1);
                this.speler = Toolkit.getDefaultToolkit().getImage("src/images/soko_down.png");
                break;

            // direction 2 (omhoog)
            case KeyEvent.VK_UP:
                this.control.replaceVertical(-1, 2);
                this.speler = Toolkit.getDefaultToolkit().getImage("src/images/soko_up.png");
                break;

            // direction 3 (links)
            case KeyEvent.VK_LEFT:
              this.control.replaceHorizontal(-1, 3);
              this.speler = Toolkit.getDefaultToolkit().getImage("src/images/soko_left.png");
              break;

            // direction 4 (rechts)
            case KeyEvent.VK_RIGHT:
                this.control.replaceHorizontal(1, 4);
                this.speler = Toolkit.getDefaultToolkit().getImage("src/images/soko_right.png");
                break;

            // verwijder muren...
            case KeyEvent.VK_Y:
                this.playground.getMurenCoordinaten().clear();
                break;

            // terug naar startpositie
            case KeyEvent.VK_HOME:
                if(this.control.gotoStartPosition(this.playground.speler))
                    repaint();
                break;

            // keer één stap terug
            case KeyEvent.VK_B:
                if(this.control.doUndo(this.playground.speler))
                    repaint();
                break;
        }

        // controleer of het aantal stappen is verhoogt
        if(aantalStappenOud < this.playground.speler.getAantalStappen())
        {
            System.out.println(this.playground.speler.getAantalStappen() + ": y " + this.playground.speler.getYIndex() + ", x" + this.playground.speler.getXIndex());
            repaint();
        }

        // controleer of alle kisten op eindpunten staan
        if(this.control.checkAlleKistenOpEindpunt())
        {
            SpelHandler spelHandler = new SpelHandler();
            spelHandler.gotoNextPlayground(spel);
        }
    }

    /*
    * @type: method
    * @param: key
    */
    public void keyTyped(KeyEvent key){}

    /*
    * @type: method
    * @param: key
    */
    public void keyReleased(KeyEvent key){}
}

---

Thanks for looking at it.

Kind regards,

André

Write some debug code (System.out.println) in the paintComponent() and see whether it's finding the images.

Tolls,

Well than we have the answer already because he does show me the scorestring (drawString).
So it looks like he doesn't show the images.
How can i solve this?

The directory of the images is placed in the src directory and in the IDE he has no problem displaying them.

When i extract the *.jar i have them to in the same dir.

Kind regards,

Jars work differently.
What you really need to do is getResourceAsStream, and use ImageIO rather than Toolkit. Also ensure that the images are in the jar file.

Can you give an example with drawimage and my code.

I've tried this and it gives a nullpointer

Code:

---

  Image image=java.awt.Toolkit.getDefaultToolkit().createImage(this.getClass().getResource("src/images/endpoint.png"));
        for(Eindpunt item : this.playground.eindpuntenLijst)
            g.drawImage(image, item.getXIndex()*this.control.getItemWidth(), item.getYIndex()*this.control.getItemHeight(), this);

---

error:

Uncaught error fetching image:
java.lang.NullPointerException
at sun.awt.image.URLImageSource.getConnection(URLImag eSource.java:99)
at sun.awt.image.URLImageSource.getDecoder(URLImageSo urce.java:113)
at sun.awt.image.InputStreamImageSource.doFetch(Input StreamImageSource.java:240)
at sun.awt.image.ImageFetcher.fetchloop(ImageFetcher. java:172)
at sun.awt.image.ImageFetcher.run(ImageFetcher.java:1 36)
Uncaught error fetching image:
java.lang.NullPointerException
at sun.awt.image.URLImageSource.getConnection(URLImag eSource.java:99)
at sun.awt.image.URLImageSource.getDecoder(URLImageSo urce.java:113)
at sun.awt.image.InputStreamImageSource.doFetch(Input StreamImageSource.java:240)
at sun.awt.image.ImageFetcher.fetchloop(ImageFetcher. java:172)
at sun.awt.image.ImageFetcher.run(ImageFetcher.java:1 36)

Solved the nullpointer. Let's see and its displaying the image.
Lets see how it is outside of NB.

I have changed this:
1. Path

Code:

---


BASEPATH = ".\\src\\images\\";

---

2. getting the image:

Code:

---


        if(eindpunt  == null) {
                eindpunt  = readImage(BASEPATH + "endpoint.png");
        }
        else
        {
            System.out.println("Kan het bestand niet vinden - endpoint.png");
        }

---

3. reading the image

Code:

---

static public Image readImage( String imgLocation ) {
        try {
            BufferedImage image = ImageIO.read(new File(imgLocation));
            return image;
        } catch (IOException ex) {
            throw new RuntimeException(ex.getMessage());
        }
    }

---

The new solution works once again in the IDE but not when i clean in build, outside the IDE.

Any ideas?

Solved:
URL url = getClass().getResource("/images/soko.png");
Image image =Toolkit.getDefaultToolkit().getImage(url);
this.speler = image;

Thanks for thinking with me.