Question

I am currently having a minor issue with a Java Jframe and a button not updating.

I am trying to disable the Print Button until the printing of the new JFrame it opens is done and that JFrame is closed…

The button will only disable if and when a new window occurs, but will not until then, which can take a little bit of time….

I set the button to disable by doing this: PrintBttn.setEnabled(false);

I have tried calling mainPanel.revalidate(); mainPanel.repaint(); PrintBttn.revalidate(); PrintBttn.repaint as well as a mixture of the above as they recommended in other forums…

I am kind of lost at the moment on this and to why it is not disabling the button until a new window appears since the first thing i do is Disable it as shown above, and then go through and create the new window….

Thanks,
Erik

Answer 1

Most likely, it’s a question of releasing the EDT to allow it to repaint the disabled button.

Generally, it will look something like this:

PrintBttn.setEnabled(false);
SwingUtilities.invokeLater(new Runnable() {
    public void run() {
        // Code to display the second JFrame goes here
    }
};