Output of the program [Method overlaoding-i]

Problem statement: Output of the program !!

1. class MethodOverloadExe {
2. public void run(Object o) {
3. System.out.println("object");
4. }
5. public void run(String o) {
6. System.out.println("string");
7. }
8. }
9. public class OverloadingExe {
10. public static void main(String[] args) {
11. MethodOverloadExe m = new MethodOverloadExe();
12. m.run(null);
13. }
14. }

Output:
string