Why you should use EJB Online Test?

The EJB (Enterprise Java Beans) 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: Understanding of EJB Architecture Working with Enterprise Beans Implementation of Session Beans Utilizing Message-Driven Beans Implementing Container-Managed Persistence Managing Bean-Managed Persistence Knowledge of EJB Security Working with EJB Transactions Utilizing EJB Timer Service Implementing Interceptors

EJB Online Test

Q: What topics are covered in the EJB Online Test?

EJB Architecture Enterprise Beans Session Beans Message-Driven Beans Container-Managed Persistence Bean-Managed Persistence EJB Security EJB Transactions EJB Timer Service Interceptors

About the test:

The EJB online test uses scenario-based multiple-choice questions to evaluate a candidate's knowledge and skills related to EJB fundamentals, session beans and message-driven beans, container-managed transactions and security, EJB design patterns and best practices, distributed caching and clustering, and integrating EJB with other Java technologies such as Java Persistence API (JPA) and Java Message Service (JMS). The test aims to assess the candidate's proficiency in EJB and their ability to build robust and scalable enterprise applications using Java.

Covered skills:

EJB Architecture
Session Beans
Container-Managed Persistence
EJB Security
EJB Timer Service

Enterprise Beans
Message-Driven Beans
Bean-Managed Persistence
EJB Transactions
Interceptors

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9 reasons why

Adaface EJB Test is the most accurate way to shortlist Java Developers

Reason #1

Tests for on-the-job skills

The EJB 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:

Understanding the architecture of Enterprise Java Beans
Implementing and managing session beans
Creating and utilizing message-driven beans
Understanding container-managed persistence in EJB
Implementing bean-managed persistence in EJB
Managing security in EJB applications
Working with EJB transactions
Utilizing the EJB timer service
Implementing interceptors in EJB
Designing and implementing EJB applications

Reason #2

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.

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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

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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 EJB (Enterprise Java Beans) Test will be non-googleable.

🧐 Question
Easy Custom Exception Exception Handling Custom Exceptions	Solve
What does the following code output?
Hard Holding References	Solve
What does the following Java code output?
Medium Abstract Interface OOPs Interfaces	Solve
Given following interface: Which of these are correct classes?
Medium Garbage Collection Garbage Collection	Solve
After which line is "bs" object, created on Line 4, eligible for garbage collection?
Hard Static Init Blocks OOPs	Solve
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

	🧐 Question	🔧 Skill
	Easy Custom Exception Exception Handling Custom Exceptions	2 mins Java	Solve
What does the following code output?
	Hard Holding References	2 mins Java	Solve
What does the following Java code output?
	Medium Abstract Interface OOPs Interfaces	2 mins Java	Solve
Given following interface: Which of these are correct classes?
	Medium Garbage Collection Garbage Collection	2 mins Java	Solve
After which line is "bs" object, created on Line 4, eligible for garbage collection?
	Hard Static Init Blocks OOPs	2 mins Java	Solve
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

	🧐 Question	🔧 Skill	💪 Difficulty	⌛ Time
	Custom Exception Exception Handling Custom Exceptions	Java	Easy	2 mins	Solve
What does the following code output?
	Holding References	Java	Hard	2 mins	Solve
What does the following Java code output?
	Abstract Interface OOPs Interfaces	Java	Medium	2 mins	Solve
Given following interface: Which of these are correct classes?
	Garbage Collection Garbage Collection	Java	Medium	2 mins	Solve
After which line is "bs" object, created on Line 4, eligible for garbage collection?
	Static Init Blocks OOPs	Java	Hard	2 mins	Solve
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

Reason #4

1200+ customers in 75 countries

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

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Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment EJB (Enterprise Java Beans) 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 EJB (Enterprise Java Beans) 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.

Reason #7

Detailed scorecards & benchmarks

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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.

Reason #9

Advanced Proctoring

Learn more

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About the EJB Assessment Test

Why you should use Pre-employment EJB Online Test?

The EJB (Enterprise Java Beans) 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:

Understanding of EJB Architecture
Working with Enterprise Beans
Implementation of Session Beans
Utilizing Message-Driven Beans
Implementing Container-Managed Persistence
Managing Bean-Managed Persistence
Knowledge of EJB Security
Working with EJB Transactions
Utilizing EJB Timer Service
Implementing Interceptors

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 EJB Online Test?

EJB Architecture
EJB Architecture is a server-side component architecture for the Java Enterprise Edition (JEE) platform. It provides a framework for developing and deploying scalable, distributed, and secure enterprise applications. This skill is measured in the test to evaluate the candidate's understanding of the EJB architecture, which is crucial for developing robust and efficient enterprise applications.
Enterprise Beans
Enterprise Beans are the components of the EJB architecture that implement the business logic of an enterprise application. They encapsulate the application's data and behavior, and provide services to clients. This skill is measured in the test to assess the candidate's ability to design and implement enterprise beans effectively.
Session Beans
Session Beans are a type of Enterprise Beans that represent the business logic of a specific client. They perform operations on behalf of the client and are not shared among multiple clients. This skill is measured in the test to evaluate the candidate's proficiency in developing and managing session beans, which are essential for implementing the core functionality of enterprise applications.
Message-Driven Beans
Message-Driven Beans are a type of Enterprise Beans that enable asynchronous communication in the EJB architecture. They listen for messages from a messaging system and perform actions based on the received messages. This skill is measured in the test to assess the candidate's understanding of message-driven beans and their ability to implement asynchronous messaging in enterprise applications.
Container-Managed Persistence
Container-Managed Persistence is a mechanism provided by the EJB container to manage the persistent storage of entity beans. It automatically handles database operations such as storing, retrieving, and updating data. This skill is measured in the test to evaluate the candidate's knowledge of container-managed persistence and their ability to design and implement entity beans with persistent storage.
Bean-Managed Persistence
Bean-Managed Persistence is an alternative to container-managed persistence where the EJB developer manually handles the database operations within the entity bean code. This skill is measured in the test to assess the candidate's understanding of bean-managed persistence and their ability to implement custom persistence logic in entity beans.
EJB Security
EJB Security deals with securing the access to EJB components based on roles and permissions. It ensures that only authorized users can invoke specific methods on enterprise beans. This skill is measured in the test to evaluate the candidate's knowledge of EJB security mechanisms and their ability to implement secure access control in enterprise applications.
EJB Transactions
EJB Transactions provide a reliable and consistent way to manage data integrity in enterprise applications. They ensure that a group of database operations either all succeed or all fail together. This skill is measured in the test to assess the candidate's understanding of EJB transactions and their ability to implement transactional behavior in enterprise beans.
EJB Timer Service
EJB Timer Service allows the scheduling of time-based events within enterprise beans. It enables the execution of tasks at specific intervals or at a certain point in time. This skill is measured in the test to evaluate the candidate's proficiency in using the EJB Timer Service for implementing scheduled tasks and time-based operations in enterprise applications.
Interceptors
Interceptors are components in the EJB architecture that intercept method invocations and perform additional actions before and after the execution of the intercepted method. They provide a crosscutting functionality that can be applied to multiple EJB components. This skill is measured in the test to assess the candidate's understanding of interceptors and their ability to apply interceptors to enhance the behavior of enterprise beans.
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 EJB (Enterprise Java Beans) Test to be based on.
EJB Architecture
EJB components
EJB life cycle
Stateful session beans
Stateless session beans
Singleton session beans
Message-Driven Beans
JMS
Activation Configurations
Container-Managed Persistence
Entity Beans
Bean-Managed Persistence
Primary Keys
Relationships
EJB Security
Authentication & Authorization
Roles & Permissions
Programmatic Security
Transactions
Local vs Global transactions
Container-Managed Transactions
Bean-Managed Transactions
Transaction Attributes
Isolation Levels
EJB Timer Service
Timers
Calendar-based timers
Interval-based timers
Interceptors
Interceptor classes
Interceptor methods
Interception lifecycle
EJB Design Patterns
Singleton Pattern
Factory Pattern
Facade Pattern
Proxy Pattern
Service Locator Pattern
Transfer Object Pattern
Data Access Object Pattern
Business Delegate Pattern
Composite Entity Pattern
Transfer Object Assembler Pattern
Service Activator Pattern
Application Service Pattern
Business Object Pattern
Entity Abstraction Pattern
Asynchronous Services Pattern
DAO Factory Pattern
Value List Handler Pattern
Business Interface Pattern
Transfer Object Pattern
Cache Pattern
Session Facade Pattern
Presentation Tier Design Pattern
Service Stub Pattern
Stereotype Annotation Design Pattern
Dependency Injection Pattern
Thread Local Pattern
Function Delegation Pattern

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What roles can I use the EJB Online Test for?

Java Developer
Application Developer - EJB

How is the EJB 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

Advanced EJB Architecture concepts
Optimizing Enterprise Beans performance
Implementing Advanced Session Bean features
Designing and implementing advanced Message-Driven Beans
Advanced concepts in Container-Managed Persistence
Advanced techniques in Bean-Managed Persistence
Managing EJB Security and authorization
Advanced EJB transaction management
Utilizing advanced EJB Timer Service features
Implementing interceptors for advanced use cases

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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

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EJB 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.