Enums - Exercises - ForceWise - Salesforce Study Lessons, Practice Exams and more

Question 1 of 10

1. Question

You are designing an application to convert digital device states from ON to OFF and vice-versa.

Use the given enum to write a function that toggles the device state:

public enum DeviceState {ON, OFF}

public DeviceState toggleState(DeviceState currentState) {
if (currentState == ) return DeviceState.OFF;
if (currentState == ) return DeviceState.ON;
}

Question 2 of 10

2. Question

You are working on a project where you need to identify the status of customer support tickets. An Enum named TicketStatus has been defined as:

public Enum TicketStatus { OPEN, IN_PROGRESS, RESOLVED, CLOSED }

Fill in the blank to correctly declare a variable named currentStatus and initialize it with the value IN_PROGRESS:

currentStatus = TicketStatus. ;

Question 3 of 10

3. Question

For an application that determines types of beverages, an enum Beverage has been defined.

Based on the given code, complete the command to declare a variable that will store a user’s preferred beverage:

public enum Beverage {
COFFEE, TEA, SODA, WATER
}

// Fill in the blank:
usersDrink = Beverage.TEA;

Question 4 of 10

4. Question

You’re working on an application that tracks weather patterns. The application has defined an enum called Season.

Given this, complete the command to declare a variable that will store a particular season:

public enum Season {
SPRING, SUMMER, FALL, WINTER
}

// Fill in the blank below:
currentSeason = Season.FALL;

Question 5 of 10

5. Question

In an application that determines student grades, you have an enum called Grade.

Complete the following method to return a boolean indicating if a student has passed based on their grade:

public enum Grade {
A, B, C, D, F
}

public Boolean hasPassed( studentGrade) {
return studentGrade != Grade.F;
}

Question 6 of 10

6. Question

You’re developing an application to track employee departments.

Complete the method to determine if an employee belongs to the ‘Finance’ department based on the provided enum:

public enum Department {
HR, IT, SALES, FINANCE
}

public Boolean isInFinance( empDepartment) {
return empDepartment == Department.FINANCE;
}

Question 7 of 10

7. Question

You’re writing a program to manage different genres of books in a library. An enum named BookGenre is established.

Fill in the blank to declare a variable that will store the main genre of a newly added book:

public enum BookGenre {
FICTION, NONFICTION, MYSTERY, BIOGRAPHY
}

// Complete the following line:
mainGenre = BookGenre.MYSTERY;

Question 8 of 10

8. Question

Consider an application that manages different modes of transport. You want to determine if a provided mode of transport is environmentally friendly.

Fill in the blank:

public enum TransportMode {
CAR, BUS, BICYCLE, TRAIN
}

public Boolean isEcoFriendly( chosenMode) {
return chosenMode == TransportMode.BICYCLE;
}

Question 9 of 10

9. Question

You’ve been given a task to declare an Enum named PaymentStatus to represent the different statuses a payment can have in a system, such as ‘Pending’, ‘Completed’, and ‘Failed’. Declare this Enum and then create a variable named currentStatus and assign it the value Completed.

Fill in the blanks below:

public {
, ,
}

= PaymentStatus. ;

Question 10 of 10

10. Question

Consider an Enum named UserRole with the values ‘Admin’, ‘User’, and ‘Guest’. Write a method named getDefaultRole which should return the default role User from the UserRole Enum.