Controlling JCheckBox from other JFrame

Question

I am working on a Swing Application in which I need to uncheck or check the JCheckBox in a JFrame from another JFrame. I have tried multiple ways but was unable to do. Is that possible? My application is offline. Please help me with that. Thanks

Answer 1

This shouldn't be a problem. What have you done?

Common problems include:

• A tendency to subclass unnecessarily. The message seems to have got through for java.lang.Thread, but not GUIs for some reason.
• Poor separation of concerns (go for models straight away).
• Starting with the component and getting the model, rather starting with the model and constructing the component with that.

Here's an example of how you might do it.

import javax.swing.*;

public class Example {
    public static void main(String[] args) { 
        java.awt.EventQueue.invokeLater(Example::go);
    }
    private static void go() {
        ButtonModel model = new JToggleButton.ToggleButtonModel();
        openFrame("Frame A", model);
        openFrame("Frame B", model);
    }
    private static void openFrame(String title, ButtonModel checkModel) {
        JFrame frame = new JFrame(title);
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        JCheckBox checkBox = new JCheckBox("Tick me!");
        checkBox.setModel(checkModel);
        frame.add(checkBox);
        frame.pack();
        frame.setVisible(true);
    }
}