Can you cast an object to one that implements an interface? (JAVA)
- by DDP
Can you cast an object to one that implements an interface? Right now, I'm building a GUI, and I don't want to rewrite the Confirm/Cancel code (A confirmation pop-up) over and over again.
So, what I'm trying to do is write a class that gets passed the class it's used in and tells the class whether or not the user pressed Confirm or Cancel. The class always implements a certain interface.
Code:
class ConfirmFrame extends JFrame implements ActionListener
{
JButton confirm = new JButton("Confirm");
JButton cancel = new JButton("Cancel");
Object o;
public ConfirmFrame(Object o)
{
// Irrelevant code here
add(confirm);
add(cancel);
this.o = (/*What goes here?*/)o;
}
public void actionPerformed( ActionEvent evt)
{
o.actionPerformed(evt);
}
}
I realize that I'm probably over-complicating things, but now that I've run across this, I really want to know if you can cast an object to another object that implements a certain interface.
