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Cannot acces Protected Variable

Kasun Wixkramanayake
Ranch Hand

Joined: Feb 09, 2010
Posts: 74

when i try this programme i got some compile error,why i cannot access protectedattribute using ref object variable
Matthew Brown

Joined: Apr 06, 2010
Posts: 4518

Subclasses can access protected members by inheritance. So an instance of the subclass can access it's own protected member from the superclass, but it can't access the same member on a different object. Your example neatly demonstrates exactly what this means - line 27 compiles but line 24 doesn't.
Sathiesh Kumar Vs
Ranch Hand

Joined: Oct 24, 2010
Posts: 31

As Mathew said, you are trying to access the protected variable on the reference of the Super class, which you cannot do.
This is as well same as OtherSubClassA not extending ClassA.

Thanks and Regards,
It is sorta covered in the JavaRanch Style Guide.
subject: Cannot acces Protected Variable