Saturday 18 March 2017

Today's Java Quiz

This quiz comprises of very basic level of java concept questions. See how much you score out of 10. 

Note : Answers to each question is given at the end.

1. What is base class for Exception?
  • inner class
  • Throwable
  • Error
  • run time exception

2. Which is related to garbage collection in java?
  • Final
  • Finally
  • Finalize
  • Try/Catch

3. String s = new String("Radar");
   How many objects are created in this case?
  • one
  • two
  • three
  • four

4. ArrayList is a
  • interface
  • Object
  • Class
  • none

5. Which of the following is synchronized?
  • Vector
  • ArrayList
  • HashSet

6. for(;;) will result in
  • 1
  • run time exception
  • infinite loop
  • compile time exception

7. A .class file in java consists of
  • plain code
  • class definition
  • group of objects
  • bytecode

8. Which one is a run time polymorphism?
  • method overloading
  • method overriding
  • inheritence
  • encapsulation

9. The wrapping up of data & function into a single unit(class) is called
  • abstraction
  • polymorphism
  • serialization
  • encapsulation

10. IOException is an example of:
  • runtime exception
  • compile time exception
  • error
  • none

Answers: 

1-Throwable    2-Finalize    3-two   4-class   5-vector   6- infinite loop   7-bytecode

8-method overriding   9-encapsulation   10-compile time exception


                                   Click here for more Quiz 

2 comments:

  1. for(;;) is infinite loop and which might triggered to OutOfMemory Exception.

    ReplyDelete

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