Sail E0 Webinar

MCQs

Total Questions : 25 | Page 1 of 3 pages
Question 1. Which of the following does not belong: If a class inherits from some other class, it should
  1.    Make use of the parent class's capabilities
  2.    Over-ride or add the minimum to accomplish the derived class' purpose
  3.    Over-ride all the methods of its parent class
  4.    Make sure the result IS-A-KIND-OF" its base class
 Discuss Question
Answer: Option C. -> Over-ride all the methods of its parent class




Question 2. How many methods are there in a functional interface in Java 8?
  1.    0
  2.    1
  3.    2
  4.    3
 Discuss Question
Answer: Option B. -> 1




Question 3. PermGen space has been replaced with which of these in Java 8
  1.    PermSpace
  2.    PermSpaceGen
  3.    Metaspace
  4.    MetaGenSpace
 Discuss Question
Answer: Option C. -> Metaspace




Question 4. Example of functional interfaces
  1.    java.util.concurrent.Callable
  2.    java.lang.Runnable
  3.    All
  4.    None
 Discuss Question
Answer: Option C. -> All




Question 5. Using which keyword we can access a value of the instance variables and class variables of that class inside the method of that class itself.
  1.    Super
  2.    Final
  3.    This
  4.    Either super or this
 Discuss Question
Answer: Option C. -> This




Question 6. Which of these does Stream map() operates on
  1.    Class
  2.    Interface
  3.    Predicate
  4.    Function
 Discuss Question
Answer: Option D. -> Function




Question 7. Which is aggregate operation in Java 8
  1.    filter
  2.    map
  3.    forEach
  4.    All
 Discuss Question
Answer: Option C. -> forEach




Question 8. Which of the following are not valid lambda expressions?
  1.    () -> {}
  2.    () -> Raoul"
  3.    () -> {return Mario";}
  4.    (Integer i) -> return Alan" + i;
 Discuss Question
Answer: Option C. -> () -> {return Mario";}




Question 9. Functional interfaces can be annotated as
  1.    Function
  2.    FunctionalInterface
  3.    Functional
  4.    Interface
 Discuss Question
Answer: Option B. -> FunctionalInterface




Question 10. Given a class named student, which of the following is a valid constructor declaration for the class?
  1.    Student (student s) { }
  2.    Student student ( ) { }
  3.    Private final student ( ) { }
  4.    Void student ( ) { }
 Discuss Question
Answer: Option A. -> Student (student s) { }




Latest Videos
Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)
Direction Sense Test Part 1 Reasoning (Hindi)
Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE
Cube & Cuboid Part 1 Reasoning (Hindi)
Data Interpretation (DI) Basic Concept Reasoning (Hindi)
Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)
Sail E0 free webinar Webinars
Real Numbers Part 7 Class 10 Maths
Real Numbers Part 1 Class 10 Maths
Polynomials Part 1 Class 10 Maths

Latest Test Papers

Pie Chart - Test Paper 1 Data Interpretation Reasoning & DI
Tabulation - Test Paper 2 Data Interpretation Reasoning & DI
Test Paper 1 Direction Sense Test Reasoning & DI
ICA , RDIC,GFM Free Modal Test Paper - Non - Technical Branch Old Syllabus 2022 - SAIL Junior Officer E0
GFM Combined 1 Free Revision Test SAIL JO E-0