Case insensitive String split() method

Question

When I perform

String test=\"23x34 \";
String[] array=test.split(\"x\"); //splitting using simple letter

I got two items in array as 23 and

Answer 1

You could use a regex as an argument to split, like this:

"32x23".split("[xX]");

Or you could use a StringTokenizer that lets you set its set of delimiters, like this:

StringTokenizer st = new StringTokenizer("32x23","xX");
//                                          ^^    ^^
//                                       string delimiter

This has the advantage that if you want to build the list of delimiters programatically, for example for each lowercase letter in the delimiter list add its uppercase corespondent, you can do this and then pass the result to the StringTokenizer.