Trouble with Iterators and Hashtables (Java)

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http://www.unix.com – Okay so I am currently workng on an assignment where I have basically got to create a word ladder, eg. Click, Clock, Flock, Flick, so its a list of words with only 1 letter difference, and the same letters cant be reused. Now I can do 2 methods of doing this, the first (which I need help need help with right now) is generate, which the user inputs a word along with the number of steps, and then the program generates a word ladder for that word with the number of steps given. Now there is another method but since Im not working on that right now, I am focusing on the generate and I need help w (HowTos)