About Question enthuware.ocpjp.v7.2.1318 :

[arnoldnitesh]

How an object of Object class is-a Object ?

[admin]

Not sure what you mean.

-Paul.

[arnoldnitesh]

your option says: "every object in java "is-a" Object.

Object class doesn't extend itself, It is a super class itself.An object of Object class does not has "is-a" relationship.

[admin]

An object of a class is always "is-a" that class.

[pavel_c]

What about null (null is not an Object)?

[admin]

Null is not an object, therefore the question of it being "is-a" Object does not arise.

[davidkkkk]

Hi

Is 'is-like-a' really used in the Oracle exams ?

[admin]

No, the exam does not use this term. That is why we have included a note at the end of the explanation:
"Note: The distinction between is-a and is-like-a is not important for the exam. For the purpose of the exam, is-like-a is same as is-a."

HTH,
Paul.