DevSkiller Java Coding Questions have been specially prepared by our expert team of professionals for Java developers- from junior to senior level. All of our Java coding tests are specifically tailored to ensure you find the perfect candidate, using a specific range of Java questions.
DevSkiller Java coding questions are powered by the RealLifeTesting™ methodology which works by replicating real-world scenarios for your applicants to solve. Finding your next Java developer is simple with our unique range of tests.
Programming language: Java
Java frameworks and libraries: Spring Framework, Spring Boot, Hibernate, JPA, GWT, JSF, Vaadin, Play Framework, Groovy, Spock Framework / JUnit, TestNG, Selenium and others
Build tools: Maven, Gradle
iOS | Swift | Conference App Senior - Implement a network service that is used to interact with the server.
Android | Async call from native to Java via JNI - Provide the missing JNI part of the native-Java communication combo that fulfills the certain requirements.
assessing knowledge of Java, Android, iOS
Android | Style Basics - Implement a Style that can be re-used with a number of TextView widgets.
iOS | Swift | Water Power Plant Application - Implement the missing functions in the application for the analysis of data from a hydroelectric power plant.
assessing knowledge of Android, iOS
Android | Reminder app - Implement missing features in the Reminder application using BroadcastReceivers, Services, Intent scheduling using AlarmManager and Notifications API.
iOS | Swift | Students details applicaction - Implement an app maintaining student details in a file and allowing users to query the file in order to retrieve specific data.
assessing knowledge of Java
Java | Find duplicates - Implement findDuplicates method that returns a new list containing duplicates which occured N-times.
assessing knowledge of Kotlin, Android
Android | Kotlin | Async call from native to Java via JNI - Provide the missing JNI part of the native-Java communication combo that fulfills the certain requirements.
assessing knowledge of Java, Spring, JPA
Java | Spring, Hibernate | Legacy RESTful Blog - implement comments for blog posts - Create a simple REST application for serving a blog. Please note, that this project is using the legacy structure.
assessing knowledge of Groovy
Java | Groovy | Operation method - Implement a method to sum up the numbers from a given list of strings in Groovy.
assessing knowledge of Groovy, Java
Java | Groovy | Flight manager app | Seats reservation and flights analysis - Implement missing features of the flights' data management application like seats reservation and flights analysis.
assessing knowledge of Java
Java 11+ | Spring Cloud | Microstore | Microservices with RESTful and asynchronous communication - Implement REST and Asynchronous communication
assessing knowledge of Java, Android
Android | Fragment Created Dynamically - Create a Fragment and attach it dynamically to a parent Activity.
assessing knowledge of Java, Android
Android | Style Basics - Implement a Style that can be re-used with a number of TextView widgets.
assessing knowledge of Java, Android
Android | Manual Background Colour Animation - Implement a smooth colour animation of an Activity's background.
assessing knowledge of Java, Android, XML
Android | XML | Localization - Integrate localization specific translations for two languages.
assessing knowledge of Java, JPA, Spring, Spring - Dependency Injection
Java | Spring Boot, JPA, REST API | Blog app - Add a comments feature to a simple Spring Boot REST blog application.
assessing knowledge of QA, Unit-Testing, Performance
JUnit | ATM Service | Validation of ATM Service - Write a series of JUnit validation tests for ATM.
assessing knowledge of Android
Android | ListView | Todo List - Display a List of items using ListView, implement a Checkbox control, mark items as done/undone and update model data.
assessing knowledge of Android
Android | RecyclerView | Todo List - Display a List of items using RecyclerView, implement a Checkbox control, mark items as done/undone and update model data.
Java | Flights manager | Implement an application that is responsible for managing flights data
JavaScript | React | Contact Form - Optimize the fill-out form for site users
assessing knowledge of Java, Spring, Spring - Dependency Injection
Java | Spring Boot, MongoDB, REST API | Blog app - Add a comments feature to a simple Spring Boot REST blog application.
assessing knowledge of Android
Android | Task executor library - Implement the queue of long-running tasks meeting standards of Android multithreading, Android Service, Android Binder specifics and power management.
assessing knowledge of Android
Android | Notepad app - Complete basic functionalities of a note-taking application using RecyclerView.
assessing knowledge of Android
Android | Reminder app - Implement missing features in the Reminder application using BroadcastReceivers, Services, Intent scheduling using AlarmManager and Notifications API.
assessing knowledge of Android
Android | Movie database app | XML parser to list UI - Display data through RecyclerView, conduct the Spinner control and filter data in RecyclerView based on Selections in the Spinner in processing movie data application.
assessing knowledge of Android
Android | Employees catalogue - Complete features that display specific data and handle the input using RecyclerView.
Java tests use RealLifeTesting™ so you can assess each applicant’s knowledge of Java coding in a controlled environment. DevSkiller Java coding questions provide you with a clear understanding of an applicant’s coding ability and problem-solving skills.
Java is a compiled, object-oriented programming language. It is intended to let application developers “write once, run anywhere,” meaning that compiled Java code can run on all platforms that support Java, without the need for recompilation. However Java is not considered the easiest programming language to use for non-programmers, so you will want to hire the right Java developer for the job.
It is important to understand that the Java world evolves quickly so your ideal candidate will need to have up to date, relevant experience. Your Java developer will need to have an understanding of Java language through collections, “streams” and lambda expressions and concurrency through thread pools. They should have knowledge of frameworks including Spring Boot 2, Hibernate and SQL, JUnit, and Spock among others. As well as the language itself, your Java developer will also need to have knowledge of the tools and libraries of the language, such as Maven and Gradle, Git, and Docker – this will pay dividends in time-saving further down the line. Finally, your Java Developer should have hands-on, practical experience of working on actual coding projects, be it commercial or otherwise.
Do you want to test our Java Coding Questions using your own codebase? No problem. The DevSkiller online task wizard is stacked with awesome features that allow you to customize your test invites. Choose the languages you want to test, define the test scope, and duration all while monitoring your applicants’ process in real-time. Remote testing means you can conveniently test your applicants and find the best talent from all corners of the globe.
If you think DevSkiller might be just what your business needs, but you want to be sure, check out the case study below:
Ada Health
Ada Health is a global health company founded by doctors, scientists, and industry pioneers to create new possibilities for personal health. The company previously screened tech skills through an on-site task, followed by a team interview- a procedure that required a great deal of time. For this reason, the biggest objective Ada had was an improved interview experience that would save time.
“DevSkiller helped us to save precious on-site time for applicants that are already likely to be a fit. We’re saving 3 hours per candidate – that was the time we spent with applicants on a technical task before.”
Micha Gerwig– Engineering Manager Ada Health
With our Java online tests, once the candidate has completed the test, the results are automatically evaluated and presented in a clear and concise way. You don’t have to be technically minded to understand them. Each candidate is evaluated based on the solutions they have provided, with each candidate being assessed based on whether their solution would work, the quality of the code, and any errors in the code. In addition, extra features test for plagiarism from previous tests.
DevSkiller’s Java online tests are accessible from anywhere, meaning all the recruiter has to do is provide the test, then it is up to the candidate to come up with the right results. Each test can be made accessible for a limited time. Candidates can complete tests using their favorite IDE and then clone the project to GIT. Candidates can also run unit tests to make sure their solutions are effective. Once completed, test results are automatically evaluated and presented to the recruiter in the form of a report.
DevSkiller provides an extensive library of Java coding tests, meaning you can start testing candidates immediately after setting up your account. The whole process of setting up your Java coding questions can take as little as five minutes.
Feedback received from candidates is that they love the structure of DevSkiller Java coding tests. We find candidates like having a chance to prove their software development skills, rather than simply trying to churn out old algorithms that they haven’t touched since they were students. They also like that DevSkiller tests use normal coding practices and conventional tools like unit testing and cloning to GIT from a personal IDE.
If developer candidates are apprehensive about taking the test, their suspicions usually come from experience taking algorithmic tests- tests that don’t monitor the actual skills a developer uses on an everyday basis. With DevSkiller online tests, we find that candidates can immediately tell the difference and can test their Java coding skills in a way that is challenging but also a fair representation of the type of work they will be doing.
Java coding tests are flexible and you can set the duration to suit your own preferences. You have the option to use the default settings, or to cater the test to your own needs. Furthermore, each individual question within a test, can also be set with time-limits.
