Question

class background {
    public static void moon(Graphics g) {
        int k2 = 0;
        int k3 = 0;
        for (int k = 0; k <= 550; k+=2) {
            if (k2 == 550) {
                for (k2 = 550; k3 <= 550; k3+=2) {
                    k = 0;
                    g.setColor(Color.blue);
                    g.fillOval(k3,50,50,50);
                    for(long delay = 1; delay<1000000; delay++);    
                    g.setColor(Color.white);
                    g.fillOval(k3,50,50,50);
                    k2 = 0;
                }   
            } else {
                k2+=2;
                k3=0;
                g.setColor(Color.black);
                g.fillOval(k,50,50,50);
                for(long delay = 1; delay<1000000; delay++);    
                g.setColor(Color.white);
                g.fillOval(k,50,50,50); 
            }
        }
    }
}

This is my problem: in the applet it will show the black ball go across, then the blue ball, then the black ball. Then it won’t show anything else. What I want is it to just continue to loop black, blue, black, blue, and just keep going on and on.

Answer 1

It would appear you were just lacking a while loop to keep you going. Something like…

while(true){

stuffyouwanttodo();

}

Would be what you’re looking for.