How do I convert from int to String?

Question

I\'m working on a project where all conversions from int to String are done like this:

int i = 5;
String strI = \"\" + i;
         


        

Answer 1

It's not only the optimization¹. I don't like

"" + i

because it does not express what I really want to do ².

I don't want to append an integer to an (empty) string. I want to convert an integer to string:

Integer.toString(i)

Or, not my prefered, but still better than concatenation, get a string representation of an object (integer):

String.valueOf(i)

^{1. For code that is called very often, like in loops, optimization sure is also a point for not using concatenation.}

^{2. this is not valid for use of real concatenation like in System.out.println("Index: " + i); or String id = "ID" + i;}