How to trim a java stringbuilder?

Question

I have a StringBuilder object that needs to be trimmed (i.e. all whitespace chars /u0020 and below removed from either end).

I can\'t seem to find a method in string

Answer 1

You get two strings, but I'd expect the data to be only allocated once. Since Strings in Java are immutable, I'd expect the trim implementation to give you an object that shares the same character data, but with different start- and end indices. At least that's what the substr method does. So, anything you try to optimise this most certainly will have the opposite effect, since you add overhead that is not needed.

Just step through the trim() method with your debugger.