如何在jbutton中创建方法？

Question

So, i made a button like this parameter nomor in LoadPlanet and LoadRR is parameter to show some data to textbox. my code is like this the button appear correctly, but if i clicked the buttons, all of them show data from the last data which supposed to be data in last button. -> a result from tblplanet.JmlPlanet() is 8, so the parameter was like LoadPlanet(8), so that every button show 8th data.

my question is how to make the parameter in sequence, so the button can show data correctly? Any ideas?

public void createButton() {
    for (i = 0; i < tblplanet.JmlPlanet(); i++) {
        tblplanet.draw(i + 1);
        planet_name = tblplanet.getNama_planet();

        JButton PlanetJButton = new JButton();
        PlanetJButton.setBounds(10, 5 + (i * 35), 95, 26);
        PlanetJButton.setText(planet_name);
        PanelButton.add(PlanetJButton);

        PlanetJButton.addActionListener(
                new ActionListener() {

                    public void actionPerformed(ActionEvent event) {
                        for (int i = 0; i < tblplanet.JmlPlanet(); i++) {
                            nomor =  i;

                            LoadPlanet(nomor);
                            LoadRR(nomor);
                        }
                    }
                });
    }
}

Answer 1

Create a class which implements ActionListener and takes a parameter ( int ) of the planet that it represents

public class PlanetActionListener implements ActionListener {

    private final int planet;

    public PlanetActionListener(int planet) {
        this.planet = planet;
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        LoadPlanet(planet);
        LoadRR(planet);
    }

}

Then simply add the ActionListener to your button

PlanetJButton.addActionListener(new PlanetActionListener(i));

Depending on how you code is structured, you may need to make the PlanetActionListener an inner class so it can access the appropriate methods. See Nested Classes for more details