Java Objective Questions Answers -Chapter 1

• 29. After the compilation of the java source code, which file is created by the JVM
  
  

  1. .class
  2. .java
  3. .cdr
  4. .doc

  Answer And Explanation

  Answer: Option A

  Explanation:

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• 30. pow () is associated with which class

  1. Math class
  2. Input stream class
  3. Object class
  4. None of above

  Answer And Explanation

  Answer: Option A

  Explanation:

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• 31. Constructor has return type

  1. True
  2. False

  Answer And Explanation

  Answer: Option B

  Explanation:

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• 32. x=x+1 is equivalent to

  1. ++x
  2. x++
  3. x=x-1
  4. None of these

  Answer And Explanation

  Answer: Option B

  Explanation:

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• 33. If method have same name as class name and method don’t have any return type then it is known as

  1. Destructors
  2. Object
  3. Variable
  4. Constructor

  Answer And Explanation

  Answer: Option D

  Explanation:

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• 34. Methods that have same name, but different Parameter list and different definition known as

  1. Overriding
  2. Constructor
  3. Overloading
  4. none of these

  Answer And Explanation

  Answer: Option C

  Explanation:

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• 35. Inheritance means

  1. Sub class extends super class
  2. Sub class extends Base class
  3. Sub class create object of super class
  4. All of the above

  Answer And Explanation

  Answer: Option A

  Explanation:

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