Search test library by skills or roles
⌘ K

Java & Android Online Test

About the test:

The Java Android online test uses multiple-choice questions to evaluate candidates on their knowledge and skills related to Java and Android fundamentals, user interface design, activity and fragment lifecycle, data storage and retrieval, network communication, threading and concurrency, and integration with third-party libraries and APIs.

Covered skills:

  • Java Basics
  • Java Collections
  • Android Components
  • Java Coding
  • Java OOPs
  • Android Core Framework
  • Android User Interaction Handling

9 reasons why
9 reasons why

Adaface Java & Android Test is the most accurate way to shortlist Java Developers



Reason #1

Tests for on-the-job skills

The Java & Android Online Test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates at the first step of the hiring process.

The test screens for the following skills that hiring managers look for in candidates:

  • Able to write Java code using basic syntax and data types
  • Proficient in object-oriented programming concepts in Java
  • Knowledgeable in Java Collections framework and data structures
  • Familiar with the core framework of Android development
  • Able to design and implement Android components
  • Skilled in handling Android user interactions
  • Capable of efficiently handling exceptions and errors in Java
  • Experienced in utilizing Java coding principles and best practices
Reason #2

No trick questions

no trick questions

Traditional assessment tools use trick questions and puzzles for the screening, which creates a lot of frustration among candidates about having to go through irrelevant screening assessments.

View sample questions

The main reason we started Adaface is that traditional pre-employment assessment platforms are not a fair way for companies to evaluate candidates. At Adaface, our mission is to help companies find great candidates by assessing on-the-job skills required for a role.

Why we started Adaface
Reason #3

Non-googleable questions

We have a very high focus on the quality of questions that test for on-the-job skills. Every question is non-googleable and we have a very high bar for the level of subject matter experts we onboard to create these questions. We have crawlers to check if any of the questions are leaked online. If/ when a question gets leaked, we get an alert. We change the question for you & let you know.

How we design questions

These are just a small sample from our library of 10,000+ questions. The actual questions on this Java & Android Test will be non-googleable.

🧐 Question

Easy

Custom Exception
Exception Handling
Custom Exceptions
Solve
What does the following code output?
 image

Hard

Holding References
Solve
What does the following Java code output?
 image

Medium

Abstract Interface
OOPs
Interfaces
Solve
Given following interface:
 image
Which of these are correct classes?
 image

Medium

Garbage Collection
Garbage Collection
Solve
After which line is "bs" object, created on Line 4, eligible for garbage collection?
 image

Hard

Static Init Blocks
OOPs
Solve
What does the following code output?
 image
1) G A B E D H
2) G B A D E H
3) G B A D E H C F
4) C F G A B E D H
5) C F G B A D E H
6) G C F A B E D H
7) G C F B A D E H

Easy

Intent & Activity
Solve
We want to pass a value to next activity in Android. Which of the following options are the right way to do it?
 image

Easy

Linear Layout
Solve
Check the following XML layout file. 
 image
What will the UI for this layout file look like?
1. An edit text to the right of a text view and a button beneath them
2. An edit text to the right of a text view and a button to the right of the text view
3. A text view, an edit text beneath it and the button beneath the edit text
4. An edit text to the left of a text view and a button beneath it

Easy

Registration Queue
Logic
Queues
Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount.
For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition.
⚠️⚠️⚠️ Note:
- The first line of the input is the length of the array. The second line contains all the elements of the array.
- The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function.
- You need to "print" the final result (not return it) to pass the test cases.

For the example discussed above, the input will be:
5
20 70 -40 30 -10

Your code needs to print the following to the standard output:
20 70 30 -40 -10

Medium

Visitors Count
Strings
Logic
Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. 
Example:

Input:
WWMMWWCCC

Expected Output: 
4W3C2M

Explanation: 
‘W’ has the highest count, then ‘C’, then ‘M’. 
⚠️⚠️⚠️ Note:
- The input is already parsed and passed to a function.
- You need to "print" the final result (not return it) to pass the test cases.
- If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’.
- If any of them have the same count, the output should follow this order - M, W, C.
🧐 Question🔧 Skill

Easy

Custom Exception
Exception Handling
Custom Exceptions

2 mins

Java
Solve

Hard

Holding References

2 mins

Java
Solve

Medium

Abstract Interface
OOPs
Interfaces

2 mins

Java
Solve

Medium

Garbage Collection
Garbage Collection

2 mins

Java
Solve

Hard

Static Init Blocks
OOPs

2 mins

Java
Solve

Easy

Intent & Activity

2 mins

Android
Solve

Easy

Linear Layout

2 mins

Android
Solve

Easy

Registration Queue
Logic
Queues

30 mins

Coding
Solve

Medium

Visitors Count
Strings
Logic

30 mins

Coding
Solve
🧐 Question🔧 Skill💪 Difficulty⌛ Time
Custom Exception
Exception Handling
Custom Exceptions
Java
Easy2 mins
Solve
Holding References
Java
Hard2 mins
Solve
Abstract Interface
OOPs
Interfaces
Java
Medium2 mins
Solve
Garbage Collection
Garbage Collection
Java
Medium2 mins
Solve
Static Init Blocks
OOPs
Java
Hard2 mins
Solve
Intent & Activity
Android
Easy2 mins
Solve
Linear Layout
Android
Easy2 mins
Solve
Registration Queue
Logic
Queues
Coding
Easy30 minsSolve
Visitors Count
Strings
Logic
Coding
Medium30 minsSolve
Reason #4

1200+ customers in 75 countries

customers in 75 countries
Brandon

With Adaface, we were able to optimise our initial screening process by upwards of 75%, freeing up precious time for both hiring managers and our talent acquisition team alike!


Brandon Lee, Head of People, Love, Bonito

Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment Java & Android Test in your hiring process is that it is an elimination tool, not a selection tool. In other words: you want to use the test to eliminate the candidates who do poorly on the test, not to select the candidates who come out at the top. While they are super valuable, pre-employment tests do not paint the entire picture of a candidate’s abilities, knowledge, and motivations. Multiple easy questions are more predictive of a candidate's ability than fewer hard questions. Harder questions are often "trick" based questions, which do not provide any meaningful signal about the candidate's skillset.

Science behind Adaface tests
Reason #6

1 click candidate invites

Email invites: You can send candidates an email invite to the Java & Android Test from your dashboard by entering their email address.

Public link: You can create a public link for each test that you can share with candidates.

API or integrations: You can invite candidates directly from your ATS by using our pre-built integrations with popular ATS systems or building a custom integration with your in-house ATS.

invite candidates
Reason #7

Detailed scorecards & benchmarks

View sample scorecard
Reason #8

High completion rate

Adaface tests are conversational, low-stress, and take just 25-40 mins to complete.

This is why Adaface has the highest test-completion rate (86%), which is more than 2x better than traditional assessments.

test completion rate
Reason #9

Advanced Proctoring


Learn more

About the Java & Android Assessment Test

Why you should use Pre-employment Java & Android Online Test?

The Java & Android Test makes use of scenario-based questions to test for on-the-job skills as opposed to theoretical knowledge, ensuring that candidates who do well on this screening test have the relavant skills. The questions are designed to covered following on-the-job aspects:

  • Java Basics
  • Java OOPs
  • Java Collections
  • Android Core Framework
  • Android Components
  • Android User Interaction Handling
  • Java Coding
  • Handling exceptions and errors in Java
  • Understanding inheritance and polymorphism in Java
  • Working with data structures and algorithms in Java

Once the test is sent to a candidate, the candidate receives a link in email to take the test. For each candidate, you will receive a detailed report with skills breakdown and benchmarks to shortlist the top candidates from your pool.

What topics are covered in the Java & Android Online Test?

  • Java Basics

    Java Basics refers to the fundamental concepts and syntax of the Java programming language. It includes knowledge of data types, variables, control structures, and basic input/output operations. This skill should be measured in the test to ensure candidates have a strong foundation in Java programming, as it forms the basis for more advanced topics.

  • Java OOPs

    Java OOPs (Object-Oriented Programming) involves understanding the principles of encapsulation, inheritance, polymorphism, and abstraction in Java. This skill allows developers to write modular, maintainable, and reusable code. It is important to assess this skill in the test to evaluate a candidate's ability to implement efficient and scalable Java solutions.

  • Java Collections

    Java Collections is a framework that provides implementations of commonly used data structures such as lists, sets, and maps. It is essential for developers to be proficient in this skill to manipulate and store data effectively. Evaluating this skill in the test allows recruiters to gauge a candidate's proficiency in using these data structures for solving real-world problems.

  • Android Core Framework

    The Android Core Framework is a collection of essential classes and libraries that facilitate the development of Android applications. It includes components like Activity, Service, ContentProvider, and Intent. Measuring this skill in the test helps recruiters assess a candidate's understanding of the core building blocks of Android applications.

  • Android Components

    Android Components are the building blocks of an Android application, such as activities, fragments, and views. This skill is important to assess in the test as it demonstrates a candidate's ability to design and structure the user interface and functionality of an Android app.

  • Android User Interaction Handling

    Android User Interaction Handling involves capturing and responding to user actions within an Android application, such as button clicks, gestures, and touch events. It is crucial to assess this skill in the test to ensure candidates can create intuitive and responsive user experiences in their Android apps.

  • Java Coding

    Java Coding is the ability to write clean, efficient, and readable code using the Java programming language. This skill encompasses writing algorithms, implementing data structures, and applying best practices in Java development. Evaluating this skill in the test allows recruiters to gauge a candidate's coding skills and their ability to solve programming challenges effectively.

  • Full list of covered topics

    The actual topics of the questions in the final test will depend on your job description and requirements. However, here's a list of topics you can expect the questions for Java & Android Test to be based on.

    Variables
    Operators
    Conditional statements
    Loops
    Methods
    Inheritance
    Polymorphism
    Abstraction
    Encapsulation
    ArrayList
    HashMap
    LinkedList
    Stack
    Queue
    Thread
    AsyncTask
    Activity
    Fragment
    Service
    Broadcast receiver
    Intent
    Layouts
    Views
    Event handling
    UI widgets
    Exception handling
    File I/O
    Networking
    SQLite database
    Shared preferences
    RecyclerView
    Adapter
    ViewHolder
    Firebase
    JSON parsing
    Permissions
    Dialogs
    Toast
    Testing
    Debugging
    Logging
    Lambda expressions
    Generics
    Multithreading
    Design patterns
    Synchronization
    Serialization
    Lambda expressions
    Exception handling
    Recursion
    Sorting
    Searching
    Data structures
    Algorithm analysis
    Memory management
    Coding best practices
    Code refactoring

What roles can I use the Java & Android Online Test for?

  • Java Developer
  • Android Developer
  • Senior Android Developer
  • Mobile App Developer

How is the Java & Android Online Test customized for senior candidates?

For intermediate/ experienced candidates, we customize the assessment questions to include advanced topics and increase the difficulty level of the questions. This might include adding questions on topics like

  • Implementing MVC architecture in Android
  • Utilizing Intents and Intent Filters in Android
  • Designing and implementing custom views in Android
  • Using Android XML layouts and resources effectively
  • Handling user input and touch events in Android
  • Implementing multithreading and background tasks in Java
  • Working with databases and SQLite in Android
  • Creating and managing Fragments in Android
  • Testing and debugging Android applications
  • Building responsive and efficient user interfaces in Android
  • Optimizing code and performance in Java and Android

The coding question for experienced candidates will be of a higher difficulty level to evaluate more hands-on experience.

Singapore government logo

The hiring managers felt that through the technical questions that they asked during the panel interviews, they were able to tell which candidates had better scores, and differentiated with those who did not score as well. They are highly satisfied with the quality of candidates shortlisted with the Adaface screening.


85%
reduction in screening time

Java & Android Hiring Test FAQs

Can I combine multiple skills into one custom assessment?

Yes, absolutely. Custom assessments are set up based on your job description, and will include questions on all must-have skills you specify. Here's a quick guide on how you can request a custom test.

Do you have any anti-cheating or proctoring features in place?

We have the following anti-cheating features in place:

  • Non-googleable questions
  • IP proctoring
  • Screen proctoring
  • Web proctoring
  • Webcam proctoring
  • Plagiarism detection
  • Secure browser
  • Copy paste protection

Read more about the proctoring features.

How do I interpret test scores?

The primary thing to keep in mind is that an assessment is an elimination tool, not a selection tool. A skills assessment is optimized to help you eliminate candidates who are not technically qualified for the role, it is not optimized to help you find the best candidate for the role. So the ideal way to use an assessment is to decide a threshold score (typically 55%, we help you benchmark) and invite all candidates who score above the threshold for the next rounds of interview.

What experience level can I use this test for?

Each Adaface assessment is customized to your job description/ ideal candidate persona (our subject matter experts will pick the right questions for your assessment from our library of 10000+ questions). This assessment can be customized for any experience level.

Does every candidate get the same questions?

Yes, it makes it much easier for you to compare candidates. Options for MCQ questions and the order of questions are randomized. We have anti-cheating/ proctoring features in place. In our enterprise plan, we also have the option to create multiple versions of the same assessment with questions of similar difficulty levels.

I'm a candidate. Can I try a practice test?

No. Unfortunately, we do not support practice tests at the moment. However, you can use our sample questions for practice.

What is the cost of using this test?

You can check out our pricing plans.

Can I get a free trial?

Yes, you can sign up for free and preview this test.

I just moved to a paid plan. How can I request a custom assessment?

Here is a quick guide on how to request a custom assessment on Adaface.

customers across world
Join 1200+ companies in 75+ countries.
Try the most candidate friendly skills assessment tool today.
g2 badges
Ready to use the Adaface Java & Android Test?
Ready to use the Adaface Java & Android Test?
ada
Ada
● Online
Previous
Score: NA
Next
✖️