Calling method to add JFrame components

Question

I'm trying to build a GUI. I have a JFrame and want to add components to it from their individual classes to keep everything seperate.
Can someone give me some guidance with the call?
Frame.add(method from other class)
I'm not sure how to do this. I've tried several different options and attempts, but I can't get the syntax right. I can do it from within the JFrame class, but can't figure out the external call. All the examples and tuts I find show calls within the same class, but not from other classes. Right now that's my weak point with this.
Any guidance...
Thanks in advance

Answer 1

public class MyComponent{
    public JButton createLabel(String caption){
         return new JButton(caption);
    public JPanel createPanel(){
        JPanel p = new JPanel();
        p.add(new JScrollPane(new JTextArea()));
        return p;
public class Demo{
    public Demo(){
        MyCompoent c = new MyComponet();
        JFrame frame = new JFrame();
        // note: if you're using 1.4.2 or older...you have to do
        //  frame.getContentPane().add(component, position);
        // JFrame by default uses a BorderLayout, to change layout..use setLayout() method
        frame.add(c.createPanel(), "Center");
        frame.add(c.createButton("Exit"), "South");
        frame.pack();
        frame.setVisible(true);
}