Display text to a label from another class - JFrame

Question

I have a GUI screen, and it has a label in it. I now want to set the label with a text as i have shown in below (Test). But it\'s not getting updated. I think t

Answer 1

In your mainScreen() you create a new FrameTest that is distinct from the one you create in the main routine, so it's actually changing the text, of the invisible frame. Try this instead:

private FrameTest frame = this;

public  void mainScreen() {
    EventQueue.invokeLater(new Runnable() {
        public void run() {
                frame.setVisible(true);
        }
    });
}

Or simply:

public  void mainScreen() {
    EventQueue.invokeLater(new Runnable() {
        public void run() {
                setVisible(true);
        }
    });
}