I'm not talking about what interface a class must implement. I was asking about the definitions for two classes that were mentioned in the compiler's error messages:
The first class is not defined...
Type: Posts; User: Norm
I'm not talking about what interface a class must implement. I was asking about the definitions for two classes that were mentioned in the compiler's error messages:
The first class is not defined...
Is that a definition for one of the classes referred to by the error messages? If not, why post the code and ask that question?
It looks like you don't know how to write the definition for a...
Where is the class: LinkedStack defined?
Where does the class: LinkedQueue have a "generic" definition?
Where are the two classes referenced in the error messages defined?
I don't see their definitions in the Java SE packages.