Java Getters - How To Reuse Them

I am working on this project and I wanted to know if it was possible to re-use a getter, instead of having to create one for each return value (they are all of the type JPanel).

public class GamePanels {
JPanel begin, middle, end;
public void begin(){
begin = new JPanel();
begin.setBackground(Color.MAGENTA);

[Code] ....

And this is a snippet from the class which is using this class:

newButton.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
GamePanels g = new GamePanels();
g.begin();
container.add("Begin", g.getPanel());
cl.show(container, "Begin");
}
});

My question is, instead of creating a huge number of getters and then remembering which getter I need, is there a way to re-use the same one? Like maybe I can add a parameter?