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About the test:

The OOAD (Object-Oriented Analysis and Design) Online Test uses scenario-based MCQs to evaluate candidates on their understanding of the principles, concepts, and techniques involved in designing object-oriented software systems. The test assesses candidates on their knowledge of requirements gathering, use case modeling, class and object modeling, interaction modeling, and state modeling. It evaluates their familiarity with design patterns, anti-patterns, and refactoring techniques, as well as their ability to apply UML (Unified Modeling Language) in modeling and designing software systems.

Covered skills:

  • Object-Oriented Concepts
  • Class Modeling
  • State Modeling
  • Design Patterns
  • Use Case Modeling
  • Interaction Diagrams
  • Object-Oriented Design Principles
  • Architectural Design

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9 reasons why
9 reasons why

Adaface OOAD (Object Oriented Analysis Design) Assessment Test is the most accurate way to shortlist Java Developer (OOAD) Software Engineers



Reason #1

Tests for on-the-job skills

The OOAD (Object Oriented Analysis Design) 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 apply object-oriented analysis and design principles
  • Skilled in use case modeling for system requirements
  • Proficient in creating class diagrams to represent system components
  • Capable of creating interaction diagrams to illustrate system behavior
  • Able to model system states using state diagrams
  • Familiar with object-oriented design principles
  • Knowledgeable in design patterns for effective software design
  • Skilled in architectural design for scalable systems
  • Able to apply object-oriented concepts in software development
  • Experienced in technical aptitude for problem-solving
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
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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 OOAD (Object Oriented Analysis Design) Test will be non-googleable.

🧐 Question

Hard

Graph Traversal and Data Storage
Graph Theory
Algorithm Analysis
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Consider the following pseudo code implementing a specific graph traversal algorithm:
 image
What is the order in which the nodes are processed, and which data structure best represents the graph `G` for efficient traversal?

Medium

Implementing a Browser's Back Button
Stack
Data Handling
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You are tasked with implementing the "Back" button functionality in a web browser. This feature allows users to return to previously visited web pages in the order they were viewed. The browser maintains a history of URLs in a data structure. Considering the nature of web browsing, where users can go back multiple steps and then navigate to a new page (at which point the future history should be cleared), which data structure and algorithm would best implement this functionality?
A: Use a heap, add the current URL when navigating to a new page, and remove the top element when the back button is used.
B: Use a queue, enqueue the current URL when navigating to a new page, and dequeue when the back button is used.
C: Use a single stack, push the current URL when navigating to a new page, and pop when the back button is used.
D: Use an array, add the current URL to the end when navigating to a new page, and remove the last URL when the back button is used.
E: Use a linked list, add the current URL to the head when navigating to a new page, and move backwards when the back button is used.
F: Use two stacks, push the current URL to the first stack when navigating to a new page, and use the second stack to store the pages when the back button is used.

Easy

Linked List Element Removal
Linked Lists
Element Removal
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Consider a singly linked list where each node contains an integer value. Write a function `removeElement` that removes all occurrences of a specific value from the linked list. The function should return the head of the modified linked list.

Pseudo code:
 image
What will be the content of the linked list referred to by `result` after executing the above pseudo code?

Easy

Patient Consultation
Use Case Diagram
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How would you model the following situation with a use case UML diagram?
A doctor does a patient consultation together with the nurse. The nurse always has to write the notes during the consultation.
 image
 image
 image
 image

Medium

Vertical Fork
Activity Diagram
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Review the following activity diagram:
 image
Which of the following action sequences are possible during one execution of the activity diagram?
A: 1 → 2 → 4
B: 1 → 3 → 2 → 4
C: 1 → 2 → 4 → 3
D: 1 → 2 → 3 → 4

Medium

Decryptor
Strings
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What does the following pseudo code print?
 image

Hard

Fibonacci codes
Time Complexity
Pseudo Code
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Here are three pseudocodes for calculating the Nth Fibonacci number. Which of the following statements about these codes are true?
 image
A: Time complexity/efficiency of CODE 1, CODE 2, CODE 3 is the same.
B: CODE 2 is more space-efficient than CODE 3.
C: CODE 3 is more space-efficient than CODE 2.
D: CODE 2 is more time-efficient than CODE 1.
E: CODE 3 is more time-efficient than CODE 1.

Hard

Palindrome Test cases
Strings
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Go through the following faulty palindrome detection pseudocode and test cases. For which of the test cases would the code return true?
 image
Testcases
A: a
B: aba
C: aaa
D: aac

Medium

Rewards Activities Order
Database Connection
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A new popular app tracks the activities performed by its users and grants them rewards based on each individual's total activities performed in a year. This data is maintained in a database table (activitesinfo), with the following columns: userid, totalactivities, reward. This year, due to fundraising activity, the company has decided to further reward its users by enhancing the reward as per the following formula: If reward < = 4000, increase it by 2%, If 4000 < reward <= 8000, increase it by 4%, If reward > 8000, increase it by 6%.
The tech team has written three different scripts to calculate increment for each slab, each script is to run as a separate transaction. Here are the three scripts:
Script 1:
For users with reward <= 4000, set reward = reward * 1.02

Script 2:
For users with reward > 4000 and reward <= 8000, set reward = reward * 1.04

Script 3:
For users with reward > 8000, set reward = reward * 1.06
Each script is to be executed separately. Which of the following options will update the rewards as expected:
A: Execute Script 1 followed by Script 2 followed by Script 3
B: Execute Script 2 followed by Script 3; Script 1 running concurrently throughout
C: Execute Script 3 followed by Script 2; Script 1 running concurrently throughout
D: Execute Script 3 followed by Script 2 followed by Script 1
E: Execute Script 2 followed by Script 3 followed by Script 1
🧐 Question🔧 Skill

Hard

Graph Traversal and Data Storage
Graph Theory
Algorithm Analysis

3 mins

Data Structures
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Medium

Implementing a Browser's Back Button
Stack
Data Handling

2 mins

Data Structures
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Easy

Linked List Element Removal
Linked Lists
Element Removal

2 mins

Data Structures
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Easy

Patient Consultation
Use Case Diagram

2 mins

UML
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Medium

Vertical Fork
Activity Diagram

3 mins

UML
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Medium

Decryptor
Strings

2 mins

Technical Aptitude
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Hard

Fibonacci codes
Time Complexity
Pseudo Code

2 mins

Technical Aptitude
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Hard

Palindrome Test cases
Strings

2 mins

Technical Aptitude
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Medium

Rewards Activities Order
Database Connection

3 mins

Technical Aptitude
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🧐 Question🔧 Skill💪 Difficulty⌛ Time
Graph Traversal and Data Storage
Graph Theory
Algorithm Analysis
Data Structures
Hard3 mins
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Implementing a Browser's Back Button
Stack
Data Handling
Data Structures
Medium2 mins
Try practice test
Linked List Element Removal
Linked Lists
Element Removal
Data Structures
Easy2 mins
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Patient Consultation
Use Case Diagram
UML
Easy2 mins
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Vertical Fork
Activity Diagram
UML
Medium3 mins
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Decryptor
Strings
Technical Aptitude
Medium2 mins
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Fibonacci codes
Time Complexity
Pseudo Code
Technical Aptitude
Hard2 mins
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Palindrome Test cases
Strings
Technical Aptitude
Hard2 mins
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Rewards Activities Order
Database Connection
Technical Aptitude
Medium3 mins
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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

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Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment OOAD (Object Oriented Analysis Design) 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 OOAD (Object Oriented Analysis Design) 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

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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.

test completion rate
Reason #9

Advanced Proctoring


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About the OOAD (Object Oriented Analysis Design) Online Test

Why you should use Pre-employment OOAD (Object Oriented Analysis Design) Test?

The OOAD (Object Oriented Analysis Design) 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:

  • Ability to apply Object-Oriented Concepts in software development
  • Strong understanding of Use Case Modeling and its relevance in system analysis
  • Proficiency in Class Modeling and designing robust class structures
  • Expertise in creating Interaction Diagrams to illustrate system behavior
  • Thorough knowledge of State Modeling and its application in system design
  • Practical understanding of Object-Oriented Design Principles for creating scalable solutions
  • Familiarity with common Design Patterns and their implementation in software architecture
  • Ability to perform Architectural Design for complex systems
  • Experience in applying UML (Unified Modeling Language) for system analysis and design
  • Proficient in coding and problem-solving skills with a focus on Object-Oriented Programming

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 OOAD (Object Oriented Analysis Design) Test?

  • Object-Oriented Concepts:

    Object-oriented concepts refer to the fundamental principles of object-oriented programming, such as encapsulation, inheritance, and polymorphism. Evaluating a candidate's understanding of these concepts is crucial as they form the basis of OOAD and are essential for designing scalable, maintainable, and robust software systems.

  • Use Case Modeling:

    Use case modeling is a technique used to identify and define the functional requirements of a system from the perspective of its users. It helps in understanding how users interact with the system and allows for the identification of different scenarios, ensuring comprehensive coverage of system functionality.

  • Class Modeling:

    Class modeling involves the identification and definition of classes, their attributes, and relationships in a software system. This skill is important to measure as it assesses the candidate's ability to design an effective class structure that accurately represents the system's entities and their interdependencies.

  • Interaction Diagrams:

    Interaction diagrams, such as sequence diagrams and collaboration diagrams, are used to visualize the dynamic behavior of a software system. Measuring this skill helps assess the candidate's proficiency in representing and analyzing the interactions between objects during runtime.

  • State Modeling:

    State modeling involves the identification and representation of different states that an object can transition through during its lifetime. Assessing this skill helps gauge the candidate's understanding of modeling state-based systems and their ability to design and manage complex state transitions.

  • Object-Oriented Design Principles:

    Object-oriented design principles, such as SOLID principles, help guide the design and development of software systems. Evaluating this skill is essential to determine the candidate's knowledge of these principles and their ability to apply them effectively in designing scalable and maintainable software systems.

  • Design Patterns:

    Design patterns are proven solutions to recurring design problems in software development. Measurement of this skill helps assess the candidate's familiarity with common design patterns and their ability to leverage them to solve design challenges and improve code modularity and reusability.

  • Architectural Design:

    Architectural design involves the high-level structuring and organization of a software system. Evaluating this skill is vital to determine the candidate's ability to design scalable, robust, and maintainable architectures that align with the system's requirements and business goals.

  • 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 OOAD (Object Oriented Analysis Design) Test to be based on.

    Object-Oriented Concepts
    Use Case Modeling
    Class Modeling
    Interaction Diagrams
    State Modeling
    Object-Oriented Design Principles
    Design Patterns
    Architectural Design
    Abstraction
    Encapsulation
    Inheritance
    Polymorphism
    Association
    Aggregation
    Composition
    Dependency
    Generalization
    Realization
    Use Case Diagrams
    Activity Diagrams
    Sequence Diagrams
    Communication Diagrams
    Collaboration Diagrams
    State Diagrams
    Behavioral Modeling
    Entity-Relationship Diagrams
    CRC Cards
    Coupling
    Cohesion
    Single Responsibility Principle
    Open-Closed Principle
    Liskov Substitution Principle
    Interface Segregation Principle
    Dependency Inversion Principle
    Factory Pattern
    Singleton Pattern
    Builder Pattern
    Adapter Pattern
    Decorator Pattern
    Observer Pattern
    Command Pattern
    Strategy Pattern
    Template Method Pattern
    Prototype Pattern
    Composite Pattern
    Facade Pattern
    Proxy Pattern
    MVC architecture
    Layered architecture
    Microservices architecture
    Client-Server architecture
    RESTful architecture
    Event-Driven architecture
    Service-Oriented architecture
    Model-View-Controller Pattern
    Domain-Driven Design
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What roles can I use the OOAD (Object Oriented Analysis Design) Test for?

  • Java Developer (OOAD) Software Engineer
  • Systems Analyst
  • Software Architect

How is the OOAD (Object Oriented Analysis Design) 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

  • Strong grasp of data structures and their efficient usage in software development
  • Solid understanding of technical aptitude and ability to solve complex technical problems
  • Experience in applying OOAD principles to design scalable and maintainable software
  • Proficiency in using UML diagrams to communicate effectively with stakeholders
  • Expertise in applying Design Patterns to improve code reusability and maintainability
  • Demonstrated ability to create efficient and intuitive user interfaces using OOAD
  • Understanding of architectural design principles and ability to design modular systems
  • Proficient in analyzing system requirements and creating effective use case models
  • Experience in designing class diagrams that accurately represent system structure
  • Ability to create comprehensive interaction diagrams to depict system behavior
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

OOAD (Object Oriented Analysis Design) 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.

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No trick questions.
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