Validating input using java.util.Scanner [closed]

Posted by bhavna raghuvanshi on Stack Overflow See other posts from Stack Overflow or by bhavna raghuvanshi
Published on 2010-06-17T06:20:58Z Indexed on 2010/06/17 9:23 UTC
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java

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input-validation

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scanner

I'm taking user input from System.in using a java.util.Scanner. I need to validate the input for things like:

It must be a non-negative number
It must be an alphabetical letter
...etc

What's the best way to do this?

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