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Answer:

It would be nice to catch exceptions rather than just crash as this program does when something is wrong with the regular expression or the file does not open.


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Here is a list of topics which you may wish to search through.

  1. Pattern objects
  2. Matcher objects
  3. steps in matching
  4. factory methods
  5. backslash gotcha
  6. capture groups
  7. lookingAt()
  8. find()
  9. start() and end()

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