How can I refresh or reload the JFrame?

Question

I am doing project using Java and in that I need to reload whole JFrame after clicking particular button on that JFrame. How to do this?

what do you mean by 'refresh'? Is it 'return all components to the state they were when first put in the frame', 'change the components', something else? — Andrew Thompson, Oct 02 '11 at 17:49
are you add/remove JComponent on Runtime, or change Size, needed to re-layout..., — mKorbel, Oct 02 '11 at 18:08
what exactly you are doing with JFrame. Kindly elobrate it. ? — Hemang Rami, Oct 02 '11 at 18:24
This question is completely unanswerable as written. Can you share the necessary detail? — Hovercraft Full Of Eels, Oct 02 '11 at 19:11
There's an example [here](http://stackoverflow.com/questions/5812002/removeall-not-removing-at-next-validate/5812981#5812981) that may get you started. — trashgod, Oct 02 '11 at 20:05

score 50 · Accepted Answer · edited Jan 04 '14 at 17:14

50

Try

SwingUtilities.updateComponentTreeUI(frame);

If it still doesn't work then after completing the above step try

frame.invalidate();
frame.validate();
frame.repaint();

edited Jan 04 '14 at 17:14

Mike Park

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answered Oct 03 '11 at 02:32

Alim Ul Gias

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-1 for updateComponentTreeUI: that is nearly **always** the wrong thingy to do (it's re-setting the ui-delegates) when the most probable goal is merely reloading the data. – kleopatra Oct 08 '13 at 11:56
2

_reload frame_ isn't a technical term and whatever it's supposed to mean, updateComponentTree is **NOT** the answer. Actually, the question as-is is way too unspecific to be answerable, so voted to close – kleopatra Jan 04 '14 at 17:22
1

Well, so *what* is the answer, then? The updateComponentTreeUI call does the job. – foo Dec 29 '22 at 00:15

score 4 · Answer 2 · answered Oct 31 '15 at 16:17

4

just use frame.setVisible(false); frame.setVisible(true); I've had this problem with JLabels with images, and this solved it

answered Oct 31 '15 at 16:17

trikib

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score 2 · Answer 3 · answered Nov 04 '18 at 06:13

2

Here's a short code that might help.

    <yourJFrameName> main = new <yourJFrameName>();    

    main.setVisible(true);
    this.dispose();

where...

main.setVisible(true);

will run the JFrame again.

this.dispose();

will terminate the running window.

answered Nov 04 '18 at 06:13

The question is about reloading the frame (in situ), not showing the frame. The setVisible does not show the frame *again*, it just shows or hides the frame depending on the parameter. – TT. Nov 04 '18 at 06:59

score -1 · Answer 4 · edited Feb 24 '16 at 12:53

Try this code. I also faced the same problem, but some how I solved it.

public class KitchenUserInterface {

    private JFrame frame;
    private JPanel main_panel, northpanel , southpanel;
    private JLabel label;
    private JButton nextOrder;
    private JList list;

    private static KitchenUserInterface kitchenRunner ;

    public void setList(String[] order){
        kitchenRunner.frame.dispose();
        kitchenRunner.frame.setVisible(false);
        kitchenRunner= new KitchenUserInterface(order);

    }

    public KitchenUserInterface getInstance() {
        if(kitchenRunner == null) {
            synchronized(KitchenUserInterface.class) {
                if(kitchenRunner == null) {
                    kitchenRunner = new KitchenUserInterface();
                }
            }
        }


        return this.kitchenRunner;
    }

    private KitchenUserInterface() {


        frame = new JFrame("Lullaby's Kitchen");
        main_panel = new JPanel();
        main_panel.setLayout(new BorderLayout());
        frame.setContentPane(main_panel);



        northpanel = new JPanel();
        northpanel.setLayout(new FlowLayout());


        label = new JLabel("Kitchen");

        northpanel.add(label);


        main_panel.add(northpanel , BorderLayout.NORTH);


        frame.setSize(500 , 500 );
        frame.setVisible(true);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }

    private KitchenUserInterface (String[] order){
        this();
        list = new JList<String>(order);
        main_panel.add(list , BorderLayout.CENTER);

        southpanel = new JPanel();
         southpanel.setLayout(new FlowLayout());

         nextOrder = new JButton("Next Order Set");
         nextOrder.addActionListener(new OrderUpListener(list));
         southpanel.add(nextOrder);
         main_panel.add(southpanel, BorderLayout.SOUTH);



    }

    public static void main(String[] args) {
        KitchenUserInterface dat = kitchenRunner.getInstance();
        try{

        Thread.sleep(1500);
        System.out.println("Ready");
        dat.setList(OrderArray.getInstance().getOrders());
        }
        catch(Exception event) {
            System.out.println("Error sleep");
            System.out.println(event);
        }


        }

}

score -4 · Answer 5 · edited Aug 22 '14 at 15:50

-4

You should use this code

this.setVisible(false); //this will close frame i.e. NewJFrame

new NewJFrame().setVisible(true); // Now this will open NewJFrame for you again and will also get refreshed

edited Aug 22 '14 at 15:50

Frakcool

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answered Aug 22 '14 at 15:41

Veloxigami

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11

bad question attract bad answers (that's why suggested to close the question - unsuccessfully ;-) *NO* - whatever the real problem in the question, creating a new frame is *NOT* the solution. You wouldn't tear down your house just because it needs some new paint, would you? – kleopatra Aug 23 '14 at 09:26
1

@kleopatra No he won't. – Dec 04 '17 at 10:41

How can I refresh or reload the JFrame?

5 Answers5

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