Re: Instantiation question

[Mike.Barton@xxxxxxxxxxxx]

>Student show = new Student();
>
>Student is a class that has methods that returns info like studentId.  So
I
>have a method named getStudentId() that returns an int.
>
>In my program I reference the method getStudentId() as show.getStudentId
>after I do the above instantiation.  Why do I have to do this vs. doing
>something like Student.getStudentId?

Aaron
     no problem with any question,

think about this, what if you wanted another instance of the class Student
different to the one called show which would have a different studentId.
How would you then reference that one instead of instance show ?

show is an instance of the class Student which has a member studentId in
it.
To retreive show's studentId, use show.getStudentId().
If you want another instance e.g. show2 which has a different studentId in
it,
use show2.getStudentId().

The exception to the above (there always is one isn't there !) is that if
the
studentId is a static member, then you would use Student.getStudentId()
since static means all instances of the class have the same value so there
is
no need to use the instance name.

Hope this clears the mist !

Mike


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