I am trying to write a regular expression that will only allow numbers and one decimal place (aka dollars and cents). How would I write such an expression?
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David McCombs
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Joined: Oct 17, 2006
Posts: 212
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Are you looking to do this with the java API or in a more general way?
To write it out on paper it would look something like this:
(0+1+2...+9)*.(0+1+2...+9)(0+1+2...+9), where + is or, * means repeat 0 or more times and the 4 expressions are concatanated.
I don't know if this will be helpful to you, but it does describe what you are looking to do. To convert it into a Java regex, reading the link that Marc supplied should get your problem solved.
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Nav Letha
Greenhorn
Joined: Oct 22, 2006
Posts: 8
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You need to escape"." like "\." else, it will take any single character for decimal.
David McCombs
Ranch Hand
Joined: Oct 17, 2006
Posts: 212
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The regex I posted was not implementation specific.
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