NullPointerException possibility in Integer.toString(arg) method in java

Question

Is there any possibility that Integer.toString(args) give an NullPointerException like String.valueOf(args).

I know its Silly Question but I want to be clear that is there any possibility that Integer.toString() can give NullPointerException.

Answer 1

Technically yes, due to unboxing. Although I'm not sure if that is what you meant:

public class Test {

    public static void main(String[] args) {
        Integer i = null;
        System.out.println(Integer.toString(i)); // NullPointerException
    }
}

Answer 2

Integer.toString(args) may give an NullPointerException unlike String.valueOf(args).

Integer i = null; 
Integer.toString(i);        // Null pointer exception!! 
String.valueOf(i);          // No exception 
i.toString();               // Again, Null pointer exception!!

See my experiment here : http://rextester.com/YRGGY86170