RegEx to remove non-digit and non-decimal point from string

Question

String str = "$1,234.56"
str.replaceAll("[^//d]", "");

Desired Output:

1234.56

Bit lost on how to say keep the decimal point (.).

You are using the wrong kind of slash. You should just add a `.` into the character class: `[^\\d.]` — Sweeper, Dec 20 '19 at 06:06
Thank you, this was also correct. Preferred the answer with the `+`. — k_rollo, Dec 20 '19 at 06:57

anubhava · Accepted Answer · 2019-12-20T06:06:11.843

2

You may use:

str = str.replaceAll("[^\\d.]+", "");

[^\\d.] is negated character class that will match any character except digit or dot.

Added + to make this bit more efficient.

edited Dec 20 '19 at 06:06

answered Dec 20 '19 at 06:04

anubhava

Thanks, rank doesn't really matter much in this :) – anubhava Dec 20 '19 at 06:08

1 Answers1