Method Overloading for null argument

Question

I have added three methods with parameters:

public static  void doSomething(Object obj) {
    System.out.println(\"Object called\");
}

public static  void d         


        

Answer 1

null is a valid value for any of the three types; so the compiler cannot decide which function to use. Use something like doSomething((Object)null) or doSomething((Integer)null) instead.