JPanel not displaying Image

[Marcus Setchell]

I'm fairly new to Java but have quite a lot of experience in other programming languages. Struggling to get my head around it slightly though, I have managed to create a small maze game (Tile based) and am now refining it to make a more advanced version. But now i have begun this the method of drawing the tiles is no longer working? Scripts below -

This is the main class

public class gamePanel extends JPanel implements ActionListener, Runnable {
	
	private map m;
	private Thread anim;
	private boolean running;
	
	public gamePanel(){
		setFocusable(true);
		m = new map();
		anim = new Thread(this);
		anim.start();
		running = true;
	}
	
	public void run(){
		while(running){
			try { anim.sleep(1000); }catch(Exception e){ System.out.println("Failed to sleep!"); }
			repaint();
		}
	}
	
	public void actionPerformed(ActionEvent e){
		//Manage Keyboard Input
	}
	
	public void paintComponent(Graphics g){
		super.paintComponent(g);
		m.drawMap(g, 6, 6);
	}
}

And this is my map class

public class map {
	
	private Image grass, wall;
	private String tileset;
	private String[] map = new String[38];
	private Scanner m;
	
	public map(){
		loadTiles();
		loadMap();
	}
	
	public void loadMap(){
		openFile();
		readFile();
		closeFile();
	}
	
	public void drawMap(Graphics g, int posX, int posY){
	
		g.drawImage(grass, 30, 30, null);
		
	}
	
	public void openFile(){
		try {
			m = new Scanner(new File("E://Documents//Marcus//java//TBG//map.txt"));
		}catch(Exception e){
			System.out.println("Error Loading Map File!");
		}
	}
	
	public void readFile(){
		int lineCount = 0;
		while(m.hasNext()){
			map[lineCount] = m.next();
			lineCount++;
		}
	}
	
	public void closeFile(){
		m.close();
	}
	
	public void loadTiles(){
		
		String tileset = "outdoors1";
	
		ImageIcon img = new ImageIcon("E://Documents//Marcus//java//game//images//tiles//outdoors1//grass.png");
		grass = img.getImage();
		img = new ImageIcon("E://Documents//Marcus//java//game//images//tiles//"+tileset+"//wall.png");
		wall = img.getImage();
	}
	
}

I have made the drawMap(); function as basic for testing purposes and have also tried it with -

g.setColor(Color.red);
g.fillRect(10, 10, 40, 40);

Which worked a treat.

Thanks in advance - Marcus

[Marcus Setchell]

Ahh i have resolved the problem it was a stupid mistake which i am actually embarrassed to admit but i will to remind people who search for the same thing to not make this mistake.

I had 2 versions of the image in the tiles directory one BMP and the other PNG. This was because i wasn't sure on which file type to use. the grass.bmp wouldn't display i think possibly because of the method im using to load the images the other was called g.png therefore i was trying to load a file that did not exists!

Sorry for the inconvenience.

Marcus