Question

I have defined a class called Stone to add graphical stones to a JPanel:

public class Stone {

    private int x, y;
    private Color color;

    private static final int radius = 18;

    Stone(Color color) {
        this.color = color;
    }

    public Stone(int x, int y, Color color) {
        this(color);
        this.x = x;
        this.y = y;
    }

    void draw(Graphics g) {
        g.setColor(color);

        g.fillOval(x - radius, y - radius, 2 * radius, 2 * radius);
    }

    void setX(int x) {
        this.x = x;
    }

    void setY(int y) {
        this.y = y;
    }
}

I want to draw them on a JPanel. Do I have to do this within the paint method of JPanel or is it possible to use the add method of JPanel?

Answer 1

A quick answer is that you should extend a JComponent (because you want to add it to JPanel) and override the paintComponent method (because you want some custom painting of your object).