Parse a value using string

Question

I am reading a file using BufferedReader and I am trying to parse out a string using regex. The string that I would like to parse looks like this,

<test>123</test>

And, there should be text before and end of this string. And, I just want to parse the value of this string (Ex. I want to grab "123" in this case from the read string).

Regex I have is very simple, looks like

<test>?

I guess this is wrong, since it doesn't work. :)

Can somebody show me how to parse a such value from the string using the regex?

Thanks.

I added the java tag since I think that's the only language with BufferedReader. — nickb
– nickb, Commented Jul 17, 2012 at 22:07
Does it matter what is before and after "123", or can it be enough that there is text before and end? — user557597
– user557597, Commented Jul 17, 2012 at 22:52

Joseph Silber · Accepted Answer · 2012-07-24 01:47:27Z

3

You haven't specified a language, but this should work:

/<test>([^<]+)<\/test>/

The string you are looking for will be in the first captured group.

edited Jul 24, 2012 at 1:47

answered Jul 17, 2012 at 22:01

Joseph Silber

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Alberto De Caro · Accepted Answer · 2012-07-18 06:42:07Z

1

It is not clear what technology you are using. Anyway, a pattern matching the test node is:

<test>(\d*)</test>     //only digits, empty string is mathced

<test>([a-zA-Z0-9\s]*)</test>     //a more general character class

Demo

edited Jul 18, 2012 at 6:42

answered Jul 17, 2012 at 22:03

Alberto De Caro

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1 Comment

Tony Over a year ago

Ah okay. thanks everyone. Sorry that I wasnt clear. I am using Java and the expression works. thanks everyone.

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