Java Community | Help. Code. Learn.•11mo ago

Swing paint method not getting called

Sometimes when I run my application the paint method does not get called from the JPanel I set as my contentpane of my JFrame

5 Replies

JavaBot•11mo ago

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Noah | NowipiOP•11mo ago

frame = new JFrame(title);
frame.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
frame.addKeyListener(new Keyboard());
frame.setSize(width, height);
frame.setResizable(resizable);
frame.setVisible(true);
frame.setContentPane(view);
view.setVisible(true);
System.out.println("set content pane");

public class View extends JPanel {

    public View(int width, int height) {
        super(true);
        setPreferredSize(new Dimension(width, height));
    }

    @Override
    public void paint(Graphics g) {
        super.paint(g);

        System.out.println("paint");
    }
}

frame = new JFrame(title);
frame.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
frame.addKeyListener(new Keyboard());
frame.setSize(width, height);
frame.setResizable(resizable);
frame.setVisible(true);
frame.setContentPane(view);
view.setVisible(true);
System.out.println("set content pane");

public class View extends JPanel {

    public View(int width, int height) {
        super(true);
        setPreferredSize(new Dimension(width, height));
    }

    @Override
    public void paint(Graphics g) {
        super.paint(g);

        System.out.println("paint");
    }
}

this is simplified code of what and when everything gets executed the console shows sometimes only 'set content pane' not paint the docs say the paint method gets called when you show a component so I tried doing so that's where the view.setVisible(true) comes from

Unknown User•11mo ago

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Noah | NowipiOP•11mo ago

that's still super weird it only hapens like 1 in 10 times and manually repaint calling didn't help but yeah I think that did it

JavaBot•11mo ago

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Swing paint method not getting called