Using the Enumeration interface?

Newbie & Debugging Questions
#1

Hi all,

I’m using a custom binary tree data structure to store all my game objects.

I want to be able to use the for-each loop to itterate through my binary tree for things like calling the update and render methods on each of the elements.

I think that i can use the Enumeration interface to do this, but i’m not sure how. All the tutorials that I have found seem to be assuming that i’m using the enumeration interface with a class that already implements all the methods needed, so all I can find is -

You have a collection -> Black-Box MAGIC! -> enumeration now works
:-\

Anyone come across this before or have any hints?

Chears, Matt

#2

There’s no magic I’m afraid, you’ve made a custom collection class so it’s up to you to make it implement the appropriate interfaces. Also, to use with the for-each loop, you’ll be wanting the Iterable and Iterator interfaces, rather than Enumeration. Have a look at the source of the existing Java collections for clues as to how to go about implementing them.