Groovy Extension String Class

Question

Groovy allows you to do nice things with lines on external pages, for example:

${"hello".capitalize()}

How to add a new custom method to String class? How:

${"hello".custom()}

Answer 1

Use metaClass

 String.metaClass.custom = { //dosomething } 

See http://www.groovyexamples.org/2010/07/19/dynamically-add-properties-to-a-class/