Regex Expression for Specific string in Java

Question

I am new to Regex expression so not able to validate the String which can have number 0-9 FGHC,and fghc *#.

I am trying with [0-9FGHCFGHC*#]its working with regex tool but in java its not working.I am using java 1.7

E.g.for this pattern I required it like 2314F*Ghc 12fgH#etc.

public static void main(String[] args){
    String money = "23FGhc*#";
    Pattern p = Pattern.compile("[0-9FGHCfghc*#]",Pattern.CASE_INSENSITIVE);
    Matcher m = p.matcher(money);
    if (m.matches())
        System.out.println("valid:-"+ m);
    else
        System.out.println("unvalid:- "+m);
}

Thank in Advance for your help and it will be more help that you explain the soultion so I can have more knowledge in RegEx

You forgot the Pattern.CASE_INSENSITIVE flag and perhaps a quantifier (+) at the end. — Wiktor Stribiżew
– Wiktor Stribiżew, Commented May 9, 2016 at 9:41
Please show the exact relevant code. There are a bunch of questions like my regex does not work in Java but works at regex101, and the reasons can be different: 1) missed flag, 2) did not execute the Matcher, 3) used matches instead of find (and vice versa). — Wiktor Stribiżew
– Wiktor Stribiżew, Commented May 9, 2016 at 9:44
Ok, you did not use + or * at the end (and at the regex tester, you had /g modifier to enable global match). Do not use regexr.com, use regex101.com. The answer below is correct. — Wiktor Stribiżew
– Wiktor Stribiżew, Commented May 9, 2016 at 9:49
yeah that is true...Thanks for you comment.it'll give me help to understand more — vicky9988
– vicky9988, Commented May 9, 2016 at 9:52

AKS · Accepted Answer · 2016-05-09 09:43:22Z

2

(?i)[0-9fghc*#]+

You need to add a quantifier at the end as well. In this case + to match these characters one or more times.

Use can also add (?i) to make it case insensitive.

answered May 9, 2016 at 9:43

AKS

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