Programming - Abstract Classes - Discussion

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Q.

An abstract class is one which is containing ______________________.                         
A. some defined methods and undefined methods B. only defined methods
C. only undefined methods D. none

Answer: Option A
Explaination:

 


java.lang contains essential classes that represent primitive data types as well as more complex classes, including numerics,strings,objects,compiler,runt time,security and threads.This is the only package that automatically imported.




Discussion

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