Question

Wondering how to substring the last two characters quickly in Java?

Answer 1

The existing answers will fail if the string is empty or only has one character. Options:

String substring = str.length() > 2 ? str.substring(str.length() - 2) : str;

or

String substring = str.substring(Math.max(str.length() - 2, 0));

That’s assuming that str is non-null, and that if there are fewer than 2 characters, you just want the original string.