java.awt.TextField - limiting input size?

Does anyone an AWT solution for how I can limit the input size of my java.awt.TextField so the user cannot enter more than 4 characters?

Just off the top of my head:-

Add some sort of Listener which throws an Exception if getText().length() > 4

???

There must be other things you can do.

Originally posted by James Hodgkiss:
Does anyone an AWT solution for how I can limit the input size of my java.awt.TextField so the user cannot enter more than 4 characters?

Take a look at PlainDocument#insertString

Cheers for the replies.

Got it sorted by adding a KeyListener to my TextField and using a conditional e.consume() in my keyTyped(Event e) method.