CODEWITHSUNDEEP
javaregex
Kapparino
Kapparino

Reputation: 988

value which should match only numbers, dots and commas

I have a regex:

"(\\d+\\.\\,?)+"

And the value:

3.053,500

But my regex pattern does not match it. I want to have a pattern which validates numbers, dots and commas. For exmaple values which are valid:

1
12
1,2
1.2
1,23,456
1,23.456
1.234,567
etc.

Upvotes: 1

Views: 72

Answers (1)

Wiktor Stribiżew
Wiktor Stribiżew

Reputation: 626748

Your (\d+\.\,?)+ regex matches 1 or more repetitions of 1+ digits, a dot, and an opional ,. It means the strings must end with a dot. 3.053,500 does not end with a dot.

You may use

s.matches("\\d+(?:[.,]\\d+)*")

See the regex demo

Note that the ^ and $ anchors are not necessary in Java's .matches() method as the match is anchored to the start/end of the string automatically. At regex101.com, the anchors are meant to match start/end of the line (since the demo is run against a multiline string).

Pattern details

  • \d+ - 1+ digits
  • (?: - start of a non-capturing group:
    • [.,] - a dot or ,
    • \d+ - 1+ digits
  • )* - 0 or more repetitions.

Upvotes: 2

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