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Regex to allow decimals numbers in XX.XX format only  RSS feed

 
Greenhorn
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Please help me with regex to allow decimals numbers in XX.XX format only. The expression should strictly restricting only 2 digits before and after decimal.
 
Saloon Keeper
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Better than a regexp might be a NumberFormat that only allows numbers that have appropriate values.
 
It is sorta covered in the JavaRanch Style Guide.
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