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Question ID 3466

Which two forms of abstraction can a programmer use in Java?
 

Option A

A.    enums
 

Option B

B.    interfaces
 

Option C

C.    primitives
 

Option D

D.    abstract classes
 

Option E

E.    concrete classes
 

Correct Answer B,D
Description
Update Date and Time 2016-02-14 13:42:01

Question ID 3467

Given:
 
 
What is the result?
 

Option A

A.    Up Down
 

Option B

B.    Up Up
 

Option C

C.    Up null
 

Option D

D.    Compilation fails
 

Option E

E.    An exception is thrown at runtime

Correct Answer D
Description
Update Date and Time 2016-02-14 13:43:23