Which line will throw compile time error? 8 or 9?

 Which line will throw compile time error? 8 or 9?

1. package com.instanceofjava;
2. class A
3. {
4.     
5. public static void main(String [] args)
6. {
7.  
8.   Integer i = new Integer(null);
9.   String s = new String(null);
10.  
11.  }
12.  
13. }

 

1. Compile time Error at line number 9:The constructor String(String) is ambiguous