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You're welcome, but I don't think there's anything wrong with your memory. If my summary of Java array characteristics is not something you just know, even with an absence of a few months, then...

Java arrays are zero-based. An array that holds 10 elements has indices 0 - 9. The same array has length 10. The error is the '<=' sign. If this is news to you, review Java arrays.

This is the mistake:

for (int i = 0; i<=word.length(); i++){

I know you know better.