JAVA split with regex doesn't work

Question

I have the following String 46MTS007 and i have to split numbers from letters so in result i should get an array like {"46", "MTS", "007"}

String s = "46MTS007";
String[] spl = s.split("\\d+|\\D+");

But spl remains empty, what's wrong with the regex? I've tested in regex101 and it's working like expected (with global flag)

Answer 1

If you want to use split you can use this lookaround based regex:

(?<=\d)(?=\D)|(?<=\D)(?=\d)

RegEx Demo

Which means split the places where next position is digit and previous is non-digit OR when position is non-digit and previous position is a digit.

In Java:

String s = "46MTS007";
String[] spl = s.split("(?<=\\d)(?=\\D)|(?<=\\D)(?=\\d)");