Computer Networking: A Top-Down Approach (7th Edition)
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ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
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How can I create a validation in java? for example: I want that the only possible entries be: a, b or c. If the user input any other character in the string should be invalid. For example, user enter: abc (is valid), user enter: ab (is valid), user enter: abt (invalid). Should I throw an exception?
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