regex for '(number)'

Question

I need to replace all the 's around numbers, to nothing.. for example:

'1' to 1 

'100' to 100

which is the optimal way to do this? is there a regex to do this so I can use it in the replace() function of the String class?

Can you clarify that all these numbers are integers? Are there any doubles like '10.5' or '10.3333'? — Jeutnarg
– Jeutnarg, Commented Aug 4, 2016 at 19:36

anubhava · Accepted Answer · 2016-08-04 19:28:13Z

4

You can use replaceAll method with regex support:

str = str.replaceAll("'(\\d+)'", "$1");

(\\d+) will match and group digits surrounded by single quotes on either side and then we use $1 in replacement which is the back-reference to captured value in regex.

answered Aug 4, 2016 at 19:28

anubhava

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depperm · Accepted Answer · 2016-08-04 19:29:13Z

-1

If it's in a String and you want the integer why don't you just parse it.

int a = Integer.parseInt("100");

answered Aug 4, 2016 at 19:29

depperm

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