Search Adaface test library by skills or roles
⌘ K

Java & Android Online Test

The Java & Android Test is preferred by recruiters to assess on-the-job skills of candidates before an interview. It reduces technical screening time by 80% by enabling employers to identify qualified candidates.

Customized Based On:

  • Experience/ difficulty level
  • Multiple skills in 1 assessment
  • Job description/ role requirements

Covered Topics:

Data Structures
Reflection API
Functional programming
Streams API
Regular Expressions
Working with Databases
See full list
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.

Human Resources Manager

Singapore Government

reduction in screening time

Sample Java and Android Online Test 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🔧 Skill💪 Difficulty⌛ Time
Custom Exception
What does the following code output?


  • Catch22
  • 42
  • 0
  • RunTime error
JavaEasy2 min
Holding References
What does the following Java code output?


  • 1
  • 2
  • 3
  • 12
  • 13
  • Error
JavaMedium2 min
Intent & Activity
We want to pass a value to next activity in Android. Which of the following options are the right way to do it?


  • A
  • B
  • C
  • D
AndroidEasy2 min
Abstract Interface
Given following interface:
Which of these are correct classes?


  • A C
  • A D
  • A E
  • B C
  • B D
  • B E
  • C D
  • C E
  • A B
  • D E
OOPs Interfaces
JavaMedium2 min
Garbage Collection
After which line is "bs" object, created on Line 4, eligible for garbage collection?


  • After Line 4
  • After Line 5
  • After Line 8
  • After Line 9
  • After Line 11
  • After Line 12
  • When main() completes
Garbage Collection
JavaMedium2 min
Linear Layout
Check the following XML layout file. 
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


  • 1
  • 2
  • 3
  • 4
AndroidEasy2 min
Static Init Blocks
What does the following code output?
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


  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
JavaMedium2 min

How to use the Adaface Java and Android Online Test

Start screening candidates within minutes with the ready-to-go Java & Android Test

1. Choose the most appropriate test for your role

2. Start inviting candidates to complete the assessment

3. Receive real time notifications and shortlist the best candidates

OR Customize the Adaface Java & Android Test according to your job description

1. Get a custom assessment from our library of 500+ skills within 48 hours

2. Start inviting candidates to complete the assesment

3. Receive real time notifications and shortlist the best candidates

Adaface Java & Android Test is trusted by enterprises worldwide

Morgan Stanley
SG Government
Ernst and Young
Optimum Solutions
United Nations
Love Bonito

About the Adaface Java and Android Assessment Test


Data Structures
Reflection API
Functional programming
Streams API
Regular Expressions
Working with Databases
Serialization & De-serialization
Object-oriented programming (OOP)
Classes & Objects
Web application programming
Java 8 Date/Time API
List, Set, Map interfaces
Java Collections Framework
Data Types
Exception Handling
File system Handling
Event-Driven Programming
Java or Kotlin Basics
OOPs in Java or Kotlin
Android UI components (text fields, buttons, form components)
Activities (lifecycle and data sharing)
Views (ListViews, RecyclerView, CardView, Navigation View)
MVC and MVVM architecture
Data binding
Constraint layout
Connecting with REST APIs
Downloading data
Dependency Injection (Dagger and Hilt)
Content Provider
Broadcast Receiver
Location Services
SharedPreferences and SQLite
Material Design basics (FAB, Snackbar, Coordinator layout)
Animations and transitions
AndroidX vs Android Support Library
Gradle Build System
Garbage Collector
Memory Leaks
REST APIs and JSON parsing
Exception handling
Performance optimization
Debugging and testing
Publishing and distribution

Distribution Of Test Scores

The actual score distribution will vary based on your candidate pipeline quality, but you should typically expect ~20% of the candidates to do well on Adaface assessments.

The score distribution for our assessments follow the normal curve. This is a good sign- standardized tests like SAT and GRE follow the normal distribution (bell curve).

Status quo assessments typically have the exact opposite of the bell curve (too many candidates getting close to 0, too many candidates getting close to 100 and too few candidates in the middle). This is typically because they focus on theoretical questions or trick questions, which are very binary in nature- either you know the trick/ theory or you don’t.

How Adaface Is Different

Adaface conversational assessments are reflective of on-the-job skills and see an 86% completion rate as compared to ~50% for traditional assessment platforms.



Theoretical questions/ puzzles

Feels like a test

One-size-fits-all assessments




Questions for on-the-job skills





What is a custom assessment?

Every role is different and requires a custom assessment to identify top candidates efficiently. Adaface subject matter experts understand your job description/ role requirements and pick the most relevant questions from our library of 10000+ questions to create a technical assessment that helps you find the qualified candidates in your candidate pipeline quickly. All custom assessments are set up based on the job description, role requirements, must-have skills, experience level and salary range within a maximum of 48 hours and you will get an email notification once it goes live.

Check out a sample assessment here (no credit card required).

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.

How is Adaface different from other assessment tools?

We believe that status quo tech assessment platforms are not a fair way for companies to evaluate engineers because they focus on trick questions/ puzzles/ niche algorithms. We started Adaface to help companies find great engineers by assessing on-the-job skills required for a role. Read more about why we started Adaface.

Here's what's different with Adaface:

  • High quality non-googleable questions that test for on-the-job skills as opposed to theoretical knowledge.
  • A friendly conversational assessment with a chatbot, instead of sending a "test" to a candidate. This translates to a higher completion rate. Adaface assessments (86% candidate completion rate), as opposed to traditional tests (40-50% candidate completion rate)
  • Customized assessments for 700+ skills at different experience levels.

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

We have the following anti-cheating features in place:

  • Web proctoring
  • Webcam proctoring
  • Plagairism detection
  • Non-googleable questions
  • Secure browser

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?

The platform is completely self-serve, so here's one way to proceed:

  • You can sign up for free to get a feel for how it works.
  • The free trial includes one sample assessment (Java/ JavaScript) that you will find in your dashboard when you sign up. You can use it to review the quality of questions, and the candidate experience of a conversational test on Adaface.
  • To review the quality of questions, you can also review our public questions for 50+ skills here.
  • Once you're convinced that you want to try it out with real assessments and candidates, you can pick a plan according to your requirements.

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.

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

hashtag image heart icon Brandon
Join 1200+ companies in 75+ countries.
Try the most candidate friendly skills assessment tool today.
Have any questions about the Adaface Java & Android Test?
Have any questions about the Adaface Java & Android Test?
Chat with us ✨
Terms Privacy Trust Guide