Button connecting with a JPanel

Question

I am using Netbeans to create a Java desktop application. I have created two different JPanels. In one I have inserted a button, and in the other just some settings. How can I connect the JButton, in the other JPanel, to change the settings of the other one? What code should I use? (Keep in mind that I am a beginner.)

Answer 1

A very simple programm. It dosen't matter if the button and the label are in the same JPanel or not.

JFrame frame = new JFrame("Test");
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
frame.setBounds(100, 100, 300, 300);

JPanel panel = new JPanel();
panel.setPreferredSize(new Dimension(300, 150));

JLabel label = new JLabel("Test string");

JButton button = new JButton("Push me");
button.addActionListener(new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent arg0) {
        label.setText("change text");
    }
});
panel.add(label);
panel.add(button);

frame.add(panel);

frame.setVisible(true);