Java Objective Questions Answers -Chapter 1

• 1. Which class cannot be subclassed (or extended) in java?
  
  

  1. abstract class
  2. parent class
  3. Final class
  4. None of above

  Answer And Explanation

  Answer: Option C

  Explanation:

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• 2. Can we declare abstract static method

  1. Yes
  2. No

  Answer And Explanation

  Answer: Option B

  Explanation:

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• 3. Can we access private class outside the package
  

  1. Yes
  2. No

  Answer And Explanation

  Answer: Option B

  Explanation:

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• 4. Why we use array as a parameter of main method

  1. it is syntax
  2. Can store multiple values
  3. Both of above
  4. None of above

  Answer And Explanation

  Answer: Option B

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• 5. Suspend thread can be revived by using
  

  1. start() method
  2. Suspend() method
  3. resume() method
  4. yield() method

  Answer And Explanation

  Answer: Option C

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• 6. Runnable is

  1. Class
  2. Method
  3. Variable
  4. Interface

  Answer And Explanation

  Answer: Option D

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• 7. Which collection class associates values witch keys, and orders the keys according to their natural order
  
  

  1. java.util.HashSet
  2. java.util.LinkedList
  3. java.util.TreeMap
  4. java.util.SortedSet

  Answer And Explanation

  Answer: Option C

  Explanation:

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