How to check if a String contains another String in a case insensitive manner in Java?

Question

Say I have two strings,

String s1 = \"AbBaCca\";
String s2 = \"bac\";

I want to perform a check returning that s2 is contained

Answer 1

You can use regular expressions, and it works:

boolean found = s1.matches("(?i).*" + s2+ ".*");