Question

Assume the following scenario.
i call a method like this

String[] arr = {"1","2","3"};
method(arr);

and the method signature is

public void method(Object o)
{
// how will i get back the String[] arr object now.. 
}

Answer 1

If you are writing

public void method(Object o) {
   String[] arr = (String[]) o;
}

this means the only valid parameter type is String[] and you are better off making this clear with

public void method(String[] arr) {

}