Regex pattern to be used

[rakesh kadulkar]

Hi,

I am accepting a string from the user and I want some set of characters should not be there in the string.

For example in a string I accept from the user I dont want any character other than IVXLCDM to exist.

What regex I have to use.

[Rob Spoor]

Why don't you look at the Javadoc of java.util.regex.Pattern and then tell us what you've come up with yourself.

[rakesh kadulkar]

I have tried [^IXCVDM].

i WANT that any character other than this to be detected but it does not work.

[Rob Spoor]

That regex is good if you use it properly. How do you use it in your code?

[rakesh kadulkar]

Pattern p = Pattern.compile("[^IVXLCMD]");
Matcher m = p.matcher();
m.matches() if it returns true i want to reject the input.

[Mike Simmons]

In the Matcher API, take a look at the difference between matches() and find().