I have set of documents. I want to know the frequency count of each word in each document (i.e) term frequency using java program. thanks in advance. I know how to find the
You can split your documents on spaces and punctuation, go through the resulting array and then count frequency for each word (a Map<String, Integer> would really help you with this).
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If it's more than a one time problem to solve, you should consider using Lucene to index your documents. Then this post would help you answer your question.