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Where is the code reading any tokens from the StringTokenizer? It asks if there is one, but never gets it so there is always one ready to be read.

Have you located a loop that is going forever?


Probably not a problem. Try testing with a short file.

Try debugging the code by adding some println() statements to print out messages as the executes. Be sure to put one inside any loops that could be long running. The print out will show you where...