Question

Im somewhat new in java, been programming for about a year now and im currently working on a project that lets the user choose a map (worldmap for example) and add cities to that map by clicking the map.

When the user clicks on the map he/she inputs a name and the city is drawn on those coordinates, and that work’s fine. My problem is that I also want the name of the city to be drawn above the city, but I can’t get it to work for some reason.
It should be an easy task, but been trying for several hours now and it’s starting to get very annoying so I hope someone else can help me with this simple enquiry.

The code:

public class Rita extends JComponent{
    private boolean klickad=false;
    protected int xx=0;
    private int yy=0;
    public Rita(int x, int y){
        xx=x;
        yy=y;
        setBounds(x, y, 20, 20);
        setPreferredSize(new Dimension(20,20));
        setMaximumSize(new Dimension(20,20));
        setMinimumSize(new Dimension(20,20));
    }

protected void paintComponent(Graphics g){
    super.paintComponent(g);
        drawString(g, xx+5, yy);
        if(klickad==false)
            klickadVal(g, xx, yy);

        else if(klickad==true)
            oKlickadVal(g);
    }
public void drawString(Graphics g, int x, int y){
    setFont(new Font("Courier New", Font.PLAIN, 16));
    g.setColor(Color.BLACK);
    g.drawString("Test test test test test", x, y);
}

public void klickadVal(Graphics g, int x, int y){
    g.setColor(Color.RED);
    g.fillRect(0,0,getWidth(),getHeight());
}

public void oKlickadVal(Graphics g){
    g.setColor(Color.BLUE);
    g.fillRect(0, 0, getWidth(),getHeight());

Thanks in advance
/Jimmy

Answer 1

It’s because of your drawing coordinates should be define relative to the component.
You are setting the bounds of the component to x,y,w,h and drawing your text to the same x and y.
If x > w or y > h, then it won’t be visible.

Change your code to this, using relative coordinates for the drawing commands:

protected void paintComponent(Graphics g){
    super.paintComponent(g);
        drawString(g, 5, 10);
        if(klickad==false)
            klickadVal(g, 0, 0);

        else if(klickad==true)
            oKlickadVal(g);
}

And be aware of that your drawing area is only 20px*20px, because of your bounds width and height.