如何在字符串和两个点之间找到东西？

Question

I´m trying to get out some value inside a text with regex.

Text example:

COMISION 002...................50.00........15.060000...............753.00 IVA 21 %

I would like to get: 753.00

I´m using this regex:

Pattern pattern = Pattern.compile("(?<=\\.\\.)(.*)(?=IVA 21 %)");

The problem is that this regex is outputting:

.................50.00........15.060000...............753.00

So I assume that the first time the engine finds the two dots (..) sets a limit.

What I want and can´t resolve is something like: "find the words "IVA 21 %", then look back and bring me all of the data till you see two dots together"

I´m new in the regex world so any help is appreciate.

Answer 1

You can use this regex to capture your number:

\\d+(?:\\.\\d+)?(?= IVA 21 %)

ReEx Demo

In your regex negative lookbehind (?<=\\.\\.) will assert first two dots in the input that are right after 002 .

Answer 2

You could use the first group of the following regex.

(\d+.\d+) IVA 21 %

Demo