if I only could find where I read that for J2SE (>=1.2?) you always have a Graphics2D instance. I swear I have read it once.
It's true, I never think twice before casting a Graphics to Graphics2D. This works in all places where you can get such an instance (e.g. Image.getGraphics(), certain printing related classes).The argument for is Sun's (and IBM's) doing unfortunately. Since 1.2(?) JComponent.paint() gets passed a Graphics2D object in the majority of cases[1] and people are writing production code such as the following example habitually.
public void paint(Graphics g) { Graphics2D g2 = (Graphics2D) g; g2.draw(new Rectangle()); }
Worse is that publications teaching usage of Swing encourage this usage.
cu Robert
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