Pourquoi devriez-vous utiliser ce test Java en ligne

Le test en ligne Java aide les recruteurs et les gestionnaires d'embauche à identifier les candidats qualifiés à partir d'un pool de curriculum vitae et à prendre des décisions d'embauche objectives. Il réduit les frais généraux administratifs de l'interview de trop de candidats et économise du temps d'ingénierie coûteux en filtrant les candidats non qualifiés. Les écrans de test Java Adaface pour les compétences typiques recherchent dans un développeur Java: Expérience avec la syntaxe de base et les fonctions de Java Expérience avec les concepts de base Java tels que les chaînes, les oups, les classes et les collections Capable de gérer efficacement les exceptions et les erreurs Travailler avec les bases de données relationnelles et JDBC Capacité à détecter et à corriger les erreurs de programmation courantes au moment de la compilation et du temps d'exécution Expérience de codage Java pratique

Java Online Test

About the test:

The Java test uses scenario-based and code-tracing questions to evaluate candidates' knowledge of core Java concepts such as OOPs, Classes, Exceptions, Collections and advanced topics such as concurrent programming with threads and handling relational databases. The test uses simple Java Coding questions to assess a candidate's ability to code in Java.

Covered skills:

Foundations of the Java syntax and semantics
Object-Oriented Programming
Java data structures (Strings; Arrays; Objects)
Exception handling
Functional programming with Lambdas & Streams API
SOLID principles

Basics of Web application programming
Working with Databases
Collections framework
Multi-threading
Core interface and implementations (List; Set; Map)

See all covered skills

Preview this test

View sample scorecard

9 reasons why

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

Reason #1

Tests for on-the-job skills

Le test en ligne Java aide les recruteurs et les gestionnaires d'embauche à identifier les candidats qualifiés à partir d'un pool de curriculum vitae et à prendre des décisions d'embauche objectives. Il réduit les frais généraux administratifs de l'interview de trop de candidats et économise du temps d'ingénierie coûteux en filtrant les candidats non qualifiés.

Les écrans de test Java Adaface pour les compétences typiques recherchent dans un développeur Java:

Expérience avec la syntaxe de base et les fonctions de Java
Expérience avec les concepts de base Java tels que les chaînes, les oups, les classes et les collections
Capable de gérer efficacement les exceptions et les erreurs
Travailler avec les bases de données relationnelles et JDBC
Capacité à détecter et à corriger les erreurs de programmation courantes au moment de la compilation et du temps d'exécution
Expérience de codage Java pratique

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.

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.

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

🧐 Question
Easy Custom Exception Exceptions	Solve
What does the following code output?
Medium 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?
Medium 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
Easy Registration Queue Logic	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 Longest Road logic hashmaps	Solve
A startup company E-Motors is building driverless automated cars. The car contains a sensor that checks the road quality for the next N meters to decide the optimal speed at which the cars should move. We are given recorded data by the sensor in the form of an array, where each element of the array is the rating given to 1 meter of the road in sequence. The rating given by the sensor is from 1 to 100, where 100 represents the road with the best condition, and any rating above 60 is optimal. Find the longest stretch of road in meters that is categorized as optimal by the sensor. The input is an array of "strings" which needs to be converted from string to integer/number inside the function.
Medium Visitors Count Strings	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 Exceptions	2 mins Java	Solve
What does the following code output?
	Medium 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?
	Medium 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
	Easy Registration Queue Logic	30 mins Coding	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 Longest Road logic hashmaps	25 mins Coding	Solve
A startup company E-Motors is building driverless automated cars. The car contains a sensor that checks the road quality for the next N meters to decide the optimal speed at which the cars should move. We are given recorded data by the sensor in the form of an array, where each element of the array is the rating given to 1 meter of the road in sequence. The rating given by the sensor is from 1 to 100, where 100 represents the road with the best condition, and any rating above 60 is optimal. Find the longest stretch of road in meters that is categorized as optimal by the sensor. The input is an array of "strings" which needs to be converted from string to integer/number inside the function.
	Medium Visitors Count Strings	30 mins Coding	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	💪 Difficulty	⌛ Time
	Custom Exception Exceptions	Java	Easy	2 mins	Solve
What does the following code output?
	Holding References	Java	Medium	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	Medium	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
	Registration Queue Logic	Coding	Easy	30 mins	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
	Longest Road logic hashmaps	Coding	Medium	25 mins	Solve
A startup company E-Motors is building driverless automated cars. The car contains a sensor that checks the road quality for the next N meters to decide the optimal speed at which the cars should move. We are given recorded data by the sensor in the form of an array, where each element of the array is the rating given to 1 meter of the road in sequence. The rating given by the sensor is from 1 to 100, where 100 represents the road with the best condition, and any rating above 60 is optimal. Find the longest stretch of road in meters that is categorized as optimal by the sensor. The input is an array of "strings" which needs to be converted from string to integer/number inside the function.
	Visitors Count Strings	Coding	Medium	30 mins	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.

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

Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment Java Online 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.

Reason #6

1 click candidate invites

Email invites: You can send candidates an email invite to the Java Online 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 & comparative results

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

Preview this test

View sample scorecard

Comment le test est-il personnalisé pour les développeurs Java seniors?

Pour les candidats intermédiaires / expérimentés, nous personnalisons les questions d'évaluation pour inclure des sujets avancés et augmenter le niveau de difficulté des questions. Cela comprend l'ajout de questions sur des sujets comme

Utilisation de classes abstraites, de l'encapsulation, du polymorphisme et des interfaces efficacement
Comparaison de l'efficacité de deux programmes en termes de ressources utilisées
meilleures pratiques d'utilisation de collections en Java
API de réflexion
Programmation fonctionnelle à l'aide de Lambdas et Streams API
Connaissance approfondie de la gestion des exceptions et de la collecte des ordures en Java
Techniques de programmation concurrentes efficaces
Programmation motivée par des événements et programmation d'applications Web

La question du codage pour les candidats expérimentés sera d'un niveau de difficulté plus élevé pour évaluer une utilisation plus pratique des collections Java.

What roles can I use the Java Online Test for?

Java Developer
Java Programmer
Backend Developer
Senior Java Eningeer

What topics are covered in the Java Online Test?

Tableaux

Objets

Cordes

Structures de données

API de réflexion

Programmation fonctionnelle

Lambdas

API Streams

Expressions régulières

JDBC

Travailler avec des bases de données

Sérialisation et désérialisation

Programmation orientée objet (POO)

Classes et objets

Programmation des applications Web

Annotations

Optionnels

Modules

API Java 8 Date / Heure

Liste, définissez, les interfaces cartographiques

SOLIDE

Framework des collections Java

Recherche

Tri

Variables

Types de données

Jsp

Servlets

Génériques

Multi-threading

Gestion des exceptions

Gestion du système de fichiers

Héritage

Polymorphisme

Débogage

Matrices

Programmation axée sur l'événement

Preview this test

View sample scorecard

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

View Full Case Study

Java Online Test FAQs

Quel type de questions le test en ligne Java inclura-t-il?

Le test aura des questions MCQ et des questions de codage. La question du codage est conçue pour évaluer l'expérience pratique de la programmation Java. Les questions du MCQ sont basées sur un scénario pour évaluer les compétences en cours d'emploi, par opposition aux concepts théoriques.

Comment puis-je tester plusieurs compétences liées à Java dans un seul test de pré-emploi?

Nos évaluations personnalisées vous permettent de tester plusieurs compétences en un seul test. Par exemple, supposons que vous recherchiez un développeur Java avec une connaissance du printemps et du SQL. Dans ce cas, nous personnalisons une évaluation pour évaluer les trois compétences du test.

Quelles compétences sont nécessaires pour un rôle Java?

Selon le rôle et l'industrie, un développeur Java pourrait nécessiter ces compétences:

Compréhension des concepts de programmation orientés objet
Comprendre quand utiliser des modèles de conception tels que Singleton, Factory, Fly-Weight, Builder, Object Pool, Iterator, Strategy, Visitor, Composite. Cette compétence est particulièrement importante pour les développeurs Java seniors qui devront travailler sur l'architecture des applications pour concevoir des solutions à long terme
Compréhension du processus de chargement des classes et du fonctionnement des chargeurs de classe
Compréhension approfondie du monde nuancé de la performance, qu'il s'agisse de frais généraux de mémoire, de complexité de calcul ou de vitesse
Connaissance du moment où la mémoire est allouée, de quel contexte et comment il affecte la fragmentation du tas
Familiarité avec les différents algorithmes de collecte des ordures et comment utiliser les profilers
Expérience avec JSP / servlets, des frameworks Web comme Struts / Spring, et des services d'architecture / Web orientés vers le service - SOAP / REST
Capacité à appliquer les modèles et les fonctionnalités linguistiques les plus modernes aux systèmes existants
Expérience dans l'utilisation des technologies dans l'écosystème Java: Struts, Spring, Maven, Gradle, Ant, Junit, Spock et Hibernate, entre autres
Connaissance des subtilités des requêtes SQL
Capacité à apprendre les nouvelles technologies et la volonté de sortir de la zone de confort pour explorer et acquérir de nouvelles compétences

Puis-je combiner plusieurs compétences en une seule évaluation personnalisée?

Oui absolument. Les évaluations personnalisées sont configurées en fonction de votre description de poste et comprendront des questions sur toutes les compétences indispensables que vous spécifiez.

Avez-vous en place des fonctionnalités anti-chétion ou de proctorisation?

Nous avons les fonctionnalités anti-modification suivantes en place:

Questions non googléables
IP Proctoring
Proctoring Web
Proctoring webcam
Détection du plagiat
navigateur sécurisé

En savoir plus sur les fonctionnalités de Proctoring.

Comment interpréter les résultats des tests?

La principale chose à garder à l'esprit est qu'une évaluation est un outil d'élimination, pas un outil de sélection. Une évaluation des compétences est optimisée pour vous aider à éliminer les candidats qui ne sont pas techniquement qualifiés pour le rôle, il n'est pas optimisé pour vous aider à trouver le meilleur candidat pour le rôle. Ainsi, la façon idéale d'utiliser une évaluation consiste à décider d'un score de seuil (généralement 55%, nous vous aidons à bencher) et à inviter tous les candidats qui marquent au-dessus du seuil pour les prochains cycles d'entrevue.

Pour quel niveau d'expérience puis-je utiliser ce test?

Chaque évaluation ADAFACE est personnalisée à votre description de poste / Persona de candidats idéaux (nos experts en la matière choisiront les bonnes questions pour votre évaluation de notre bibliothèque de 10000+ questions). Cette évaluation peut être personnalisée pour tout niveau d'expérience.

Chaque candidat reçoit-il les mêmes questions?

Oui, cela vous permet de comparer les candidats. Les options pour les questions du MCQ et l'ordre des questions sont randomisées. Nous avons Anti-Cheating / Proctoring en place. Dans notre plan d'entreprise, nous avons également la possibilité de créer plusieurs versions de la même évaluation avec des questions de niveaux de difficulté similaires.

Je suis candidat. Puis-je essayer un test de pratique?

Non. Malheureusement, nous ne soutenons pas les tests de pratique pour le moment. Cependant, vous pouvez utiliser nos exemples de questions pour la pratique.

Quel est le coût de l'utilisation de ce test?

Vous pouvez consulter nos plans de prix.

Puis-je obtenir un essai gratuit?

Oui, vous pouvez vous inscrire gratuitement et prévisualiser ce test.

Je viens de déménager dans un plan payant. Comment puis-je demander une évaluation personnalisée?

Voici un guide rapide sur Comment demander une évaluation personnalisée sur Adaface.

Preview this test

View sample scorecard

Related Tests

Join 1200+ companies in 75+ countries.

Try the most candidate friendly skills assessment tool today.

GET STARTED FOR FREE

Ready to use the Adaface Java Online Test?

Chat with us

Preview this test

Java Online Test

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

Tests for on-the-job skills

No trick questions

Non-googleable questions

1200+ customers in 75 countries

Designed for elimination, not selection

1 click candidate invites

Detailed scorecards & comparative results

High completion rate

Advanced Proctoring

Comment le test est-il personnalisé pour les développeurs Java seniors?

What roles can I use the Java Online Test for?

What topics are covered in the Java Online Test?

Java Online Test FAQs

Quel type de questions le test en ligne Java inclura-t-il?

Comment puis-je tester plusieurs compétences liées à Java dans un seul test de pré-emploi?

Quelles compétences sont nécessaires pour un rôle Java?

Puis-je combiner plusieurs compétences en une seule évaluation personnalisée?

Avez-vous en place des fonctionnalités anti-chétion ou de proctorisation?

Comment interpréter les résultats des tests?

Pour quel niveau d'expérience puis-je utiliser ce test?

Chaque candidat reçoit-il les mêmes questions?

Je suis candidat. Puis-je essayer un test de pratique?

Quel est le coût de l'utilisation de ce test?

Puis-je obtenir un essai gratuit?

Je viens de déménager dans un plan payant. Comment puis-je demander une évaluation personnalisée?

Related Tests

Java & Spring Test

Java, Spring & Hibernate Test

Java, Spring & SQL Test

Java & Android Test

Java & SQL Test