How to check the position of a specific character or substring, within a string - 6.5

Talend Data Integration Studio User Guide

EnrichVersion
6.5
EnrichProdName
Talend Data Integration
task
Design and Development
EnrichPlatform
Talend Studio

The INDEX routine is easy to use along with a tJava component, to check whether a string contains a specified character or substring:

System.out.println(StringHandling.INDEX("hello world!", "hello"));
System.out.println(StringHandling.INDEX("hello world!", "world")); 
System.out.println(StringHandling.INDEX("hello world!", "!")); 
System.out.println(StringHandling.INDEX("hello world", "?"));

The routine returns a whole number which indicates the position of the first character specified, or indeed the first character of the substring specified. Otherwise, - 1 is returned if no occurrences are found.