java - 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 34

but when I did

String test="23x34 ";
String[] array=test.split("X"); //splitting using capitalletter

I got one item in array 23x34

So is there any way I can use the split method as case insensitive or whether there is any other method that can help?

Answer 1

split uses, as the documentation suggests, a regexp. a regexp for your example would be :

"[xX]"

Also, the (?i) flag toggles case insensitivty. Therefore, the following is also correct :

"(?i)x"

In this case, x can be any litteral properly escaped.