What is the better approach to convert primitive data type into String

Question

I can convert an integer into string using

String s = \"\" + 4; // correct, but poor style
or
String u = Integer.toString(4); // this is good

I

Answer 1

I would also use String.valueOf() method, which, in effect, uses the primitive type's Wrapper object and calls the toString() method for you:

Example, in the String class:

public static String valueOf(int i) {
        return Integer.toString(i, 10);
    }