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MCQs

Total Questions : 25 | Page 3 of 3 pages
Question 21. Which is aggregate operation in Java 8
  1.    filter
  2.    map
  3.    forEach
  4.    All
 Discuss Question
Answer: Option A. -> filter




Question 22. Which statement is true regarding an object?
  1.    An object is what classes instantiated are from
  2.    An object is an instance of a class
  3.    An object is a variable
  4.    An object is a reference to an attribute
 Discuss Question
Answer: Option B. -> An object is an instance of a class




Question 23. A functional interface acts as target types for which of the following?
  1.    Lambda expression
  2.    Method reference
  3.    Constructor reference
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above




Question 24. If a variable is declared final, it must include ¦¦¦¦¦¦¦. value.
  1.    integer
  2.    no
  3.    initial
  4.    float
 Discuss Question
Answer: Option C. -> initial




Question 25. What is the return type of lambda expression?
  1.    String
  2.    Object
  3.    void
  4.    Function
 Discuss Question
Answer: Option D. -> Function




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