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Following problems will arise if you perform conditional filtering on text files in Java alone:
1. The text file is not a database,so it cannot be accessed by SQL. The code needs to be modified if filtering conditions are changed. Besides, if you want a flexible conditional filtering as that in SQL, you have to self-program the dynamic expression parsing and evaluating, resulting in a great amount of programming work.
2. Stepwise loading is required for the big files that…Continue
Added by Lynn Guo on November 23, 2014 at 6:00pm — No Comments