I have run into an interesting side effect in my code. It seems like turning on RenderingHints for my Graphics g1 object also is affecting my Graphics g object.

As it is written, the Graphics g object should not be anti-aliased, only g1 object .... am I not "getting" something here ?

.

public void paint(Graphics g){
     Graphics2D g1 = (Graphics2D) g;
     RenderingHints rh = new RenderingHints(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
     g1.setRenderingHints(rh);
     g.setColor(Color.BLACK);
     g.fillRect(0, 0, WIDTH + 20, HEIGHT + 20);
     manager.draw(g);
     stage.draw(g);
     player.draw(g);
     g.setFont(font);
     g.drawString("\u263a \u263b",20,20);
     g.dispose();
     repaint();
	}

Graphics2D g1 = (Graphics2D) g;

g1 IS g, since you are using a language which uses references for objects rather than copying them.

lol Yeah, you're not getting Java :D Its the same object dude, you're just casting it to another type.

Its common to cast the incoming Graphics object to Graphics2D inside the method to do more interesting stuff with it (drawImage for example).