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

I Have tried this and when there is exactly one pair of overloaded method and one of them has a parameter type Object then the compiler will always select the method with more specific type. But when there is more than one specific type, then the compiler throws an ambiguous method error.

Since this is a compile time event, this can only happen when one intentionally passes null to this method. If this is done intentionally then it is better to overload this method again with no parameter or create another method altogether.