[pietomb00]

Hi,

This is probably very simple, but I'm just not understanding it. I'm trying to draw a rectangle, but when I come to it nothing shows.

I'm not sure if and how I should call the paint() method. After reading another post I got the impression it should be called whenever the program decides to repaint, so without me doing anything.

public class UserInterface {

	public static void main(String[] args){
		UserInterface GUI = new UserInterface();
		GUI.run(args);
	}
	
	void run(String[] args){
		JFrame window = new JFrame("Main");
		window.setLayout(new BorderLayout());
		window.setVisible(true);
		window.setSize(800, 750);
		window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		JPanel content = new JPanel(new GridLayout(2,2,10,10));
		window.add(content, BorderLayout.NORTH );
		content.repaint();
		
	}
	
	public void paint (Graphics g){
		Graphics2D g2 = (Graphics2D) g;
		g2.draw(new Rectangle2D.Double(10,10,100,500));
		
	}
	
	
}

Thanks

[CasiOo]

The thing is that it is the JFrame having the paint method, but you are placing it in your UserInterface class.
You should make a class that inherits from JFrame and then override the paint method.

The compiler would have warned you if you added the @Override annotion

	@Override
	public void paint(Graphics g){
		Graphics2D g2 = (Graphics2D) g;
		g2.draw(new Rectangle2D.Double(10,10,100,500));
	}

[pietomb00]

Ah yes I see, got it now. Thanks