Java interview your java should be much strong then J2EE. core java and Advance java is the basic foundation for Interview. Some of the topic about which you should know before going for a java interview...
Prototype Design Pattern:
Ø Prototype pattern refers to creating duplicate object while keeping performance in mind.
Ø This pattern involves implementing a prototype interface which tells...
Class is a template or a blueprint which is used to describe an object.
On other hand Object is a reference of a class which follows all the stuff written inside the class.
How about taking the whole tour in the following video