Program_3

1. What is the purpose of the raiseSalary() method in the Employee class?

• a) To set a new salary directly
  

• b) To increase the salary by a given percentage
  

• c) To print the salary details
  

• d) To decrease the salary

What is the access modifier for the instance variables id, name, and salary?

• a) public
  

• b) private
  

• c) protected
  

• d) default

Which keyword is used to create an object of the Employee class?

• a) this
  

• b) new
  

• c) super
  

• d) create

Which concept of OOP is shown by using private variables and public getter methods?

• a) Inheritance
  

• b) Encapsulation
  

• c) Polymorphism
  

• d) Abstraction

What does the this keyword refer to inside the constructor?

• a) The parent class
  

• b) The current object of the class
  

• c) The static variable
  

• d) The superclass

Which method automatically executes when an object is printed?

• a) print()
  

• b) display()
  

• c) toString()
  

• d) show()

Which part of the program demonstrates data hiding?

• a) Private variables with public getters
  

• b) Printing salary
  

• c) Using toString()
  

• d) Using new keyword

Which of the following best defines method overriding as used here?

• a) Defining two methods with same name in one class
  

• b) Redefining a method from superclass in subclass
  

• c) Calling a static method from another class
  

• d) Changing method parameters

When is the constructor called in the program?

• a) When an object is declared
  

• b) When an object is created using new
  

• c) When a method is called
  

• d) When the program ends

Which keyword is used inside the constructor to refer to instance variables?

• a) this
  

• b) super
  

• c) static
  

• d) final