How to parse float values from string using REGEX in java

Question

I want to parse float values from

CallCost:Rs.13.04 Duration:00:00:02 Bal:Rs.14.67 2016 mein Promotion

From above string i need 13.04 and 14.67. I used following regex

  Pattern p = Pattern.compile("\\d*\\.\\d+");
  Matcher m = p.matcher(s);
  while (m.find()) {
  System.out.println(">> " + m.group());
            }

But using this i am getting ".13", ".04", ".14", ".67" Thanks in advance

Possible duplicate of Parse string with regex

Iamat8
– Iamat8

2015-12-15 13:27:12 +00:00
Commented Dec 15, 2015 at 13:27 — Iamat8
– Iamat8, Commented Dec 15, 2015 at 13:27

Avinash Raj · Accepted Answer · 2015-12-15 13:30:31Z

7

Use \\d+ instead of \\d*

 Pattern p = Pattern.compile("\\d+\\.\\d+");

Why?

Because if you use \\d*\\.\\d+, this should match from the dot exists next to Rs, since you made the integer part to repeat zero or more times., So it don't care about the integer part.

DEMO

edited Dec 15, 2015 at 13:30

answered Dec 15, 2015 at 13:27

Avinash Raj

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5 Comments

Mena Over a year ago

See also, the differences between Java regex quantifiers, as documented in the API.

vishal sharma Over a year ago

It works fine but can i split this string on behalf of float values ex. CallCost:Rs.13.04 Duration:00:00:02 Bal:Rs.14.67 2016 mein Promotion into["CallCost:Rs.13.04 ","Duration:00:00:02 Bal:Rs.14.67"]

vishal sharma Over a year ago

Yes my next action is this

vishal sharma Over a year ago

thanks bro...its working perfect..Can you please suggest me any website or tutorials to get regex correspond to requirements.

IntelliJ Amiya Over a year ago

Nice Answer . Happy coding

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