Kalen Gibbons » regular expression http://www.kalengibbons.com/blog The Dead Tree Blog Mon, 24 Oct 2011 20:43:10 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 Simple string replacement with RegExp and Apex http://www.kalengibbons.com/blog/index.php/2008/10/simple-string-replacement-with-regexp-and-apex/ http://www.kalengibbons.com/blog/index.php/2008/10/simple-string-replacement-with-regexp-and-apex/#comments Thu, 09 Oct 2008 05:56:09 +0000 Kalen Gibbons http://www.kalengibbons.com/blog2/?p=45 Sometimes it’s hard to figure out even simple thing in a proprietary language like Apex. So here is a simple solution to a common problem.

How do I replace string elements using Regular Expressions in Apex?

//create expression as Pattern
Pattern dollarPattern = Pattern.compile(‘[,$]‘);

//replace all occurrences in a string
dollarPattern.matcher(‘$1,250.25′).replaceAll(”);

You need to use Apex’s Pattern class to create the regular expression. Then you can replace all matches in the string using the replaceAll() method.

This example takes a dollar formatted string ($1,250.25) and removes the dollar sign and comma to turn it into a number. The result would be 1250.25, perfect for database insertion or what have you.

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