why don't u add a System.out.println() to your if statement eg:
Student student2 = (Student) person2;
System.out.println("person2 IS a student");
hth
mcalex
On Aug 19, 6:22 am, Abbas Zaini <[email protected]> wrote:
> Hello friends
> given that:
> class Person is the super class of both Student and Teacher classes,
>
> *Person person1 = new Student();
> Person person2 = new Teacher();
> // Do the casting only when the type is verified
> if (person2 instanceof Student) {
> Student student2 = (Student) person2;
>
> }*
>
> we used the instanceof operator to find out if the object "person2" is an
> instance of "Student" class, but it is not, it is a "Teacher" class
> instance, and "Student" and "Teacher" are of the same level ( both are
> direct children of the class "Person" ).
> so considering the information above will the casting be done?? this is what
> i want to be sure of, i mean the lessons says that if we cast the person2
> object directly it will cause a runtime mismatch exception, so we add the
> condition to be sure that person2 is an instance of Student and the
> exception won't occur, but that doesn't change that Student is not a super
> class of Teacher.
> will "person2" be casted to "student2" ?? i don't think so but i need a
> confirmation.
>
> thank you all.
>
> --
> Abbas Zaini
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