for( int y = 0; y <= getHeight(); y += 5 ){
Point start = new Point (0,y);
Point end = new Point( y, 0);
g.drawLine(start.x, start.y, end.x, end.y);
}
class StripePanel extends JPanel {
... diverse Konstruktoren weiterleiten
@Override
public void paintComponent(Graphics g) {
for (int i = 0; i < getHeight(); i++) {
g.setForeground((i % 2 == 0) ? Color.RED : Color.GREEN);
g.drawLine(0,i,getWidth()-1,i);
}
}
}