How to access a function of an object from another object

Question

Hi all, here's my problem, I have three classes;
1)Class human
2)Class animal
3)Class environment
class environment
  public static void main(String[] args)
    human luffy = new human();
    animal chpper = new animal();
class human
   // here I wanna access a method in chpper,
   // what's the best way to day that?
   // and is it even possible with this structure??
}Thanks
Roronoa Zoro
Edited by: Roronoa.Zoro on Nov 19, 2009 6:55 PM
Edited by: Roronoa.Zoro on Nov 19, 2009 6:55 PM
Edited by: Roronoa.Zoro on Nov 19, 2009 6:56 PM

Answer 1

Alright guyz, I guess I'm super stupid but please stay with me.
Here's the whole problem; I'm writing an application that draws rectangles, so this application is a JPanel that has a layout which has two JPanels, first JPanel contains the JButtons and an ActionPerformed function, and the second JPanel has the canvas that I should draw on.
Here's the whole code;
public class animationAll extends JPanel
     public animationAll()
          this.setLayout(new BorderLayout());
                 this.add(new animationButtons(), BorderLayout.WEST);
                 this.add(new animationCanvas(), BorderLayout.CENTER);
public class animationButtons extends JPanel implements ActionListener
  JButton btnCreate = new JButton("Create");
  public animationButtons()
    JButton btnCreate= new JButton("Create");
    btnCreate.addActionListener(this);
    public void actionPerformed(ActionEvent e)
       if(e.getSource() == btnCreate)
             //here I want to call the draw method in animationCanvas.
} Thank you in advance, and please bare with me on this one
Roronoa Zoro