public void target(int rings)
{
for(int i = 0; i < rings; i++)
{
if(i%2 == 0)
{
plane.setForegroundColor(Color.RED);
}
else
{
plane.setForegroundColor(Color.WHITE);
}
int diameter = (int)(WIDTH*.9*(rings-i)/rings);
plane.fillCircle(WIDTH/2-diameter/2,HEIGHT/2-diameter/2, diameter);
}
}