Enthuware

Suggestion: It might be a good idea to post the content of the method WrapperType.equals(Object obj) to the explanation.
For example, equals() inside the class Interger is:

public boolean equals(Object obj) {
if (obj instanceof Integer) {
return value == ((Integer)obj).intValue();
}
return false;
}

This might make it easier to understand.

Thank you for your suggestion. This has now been added.

-Paul.

Primitive is misspelled. I only say because I like this software and want it to do well.

DusitnR wrote:Primitive is misspelled. I only say because I like this software and want it to do well.

Your feedback is very much appreciated. This has now been fixed.
-Paul.

return value..

what is the type of value to be returned? can you provide some more details?
thank you

The type of return value is determined by the method declaration. If you specify boolean as the return type of the method, you have to return a boolean.

HTH,
Paul.

Doesn't "equals method can be overrided" aplly in this case?

Not sure what you mean. Primitive wrapper classes already have their equals method defined. How will you change them?

Maybe I confuse something here but I find the way the question is written ambiguous.
It is not clear to me if "refer to instances of primitive wrapper classes" means:
a) there is one object of type a, one object of type b, etc.
or
b) all objects of type a, i.e. different objects of that class

I understood it as b) as which means that a.equals(a) would only be true if the same objects are referred to. I could, however, run equals on two different objects of the same class and would yield a false.

I would suggest to re-phrase the question saying "each refer to one particular instance of primitive wrapper classes". In that case it is clear.

There are different primitive wrapper classes - Byte, Short, Integer, etc.
The question quite clearly says that a , b, and c, could refer to instances of any of these classes. For eg. a might be referring to an Integer object, b might refer to a Short object and so on. a b and c are variables. Not objects.

Not sure what you find ambiguous in it.