JSON Database with Java
Acquire skills of working with JSON to use this tool as part of your work as a software developer. You will create a functional server that exchanges data with a web browser and handles multiple requests.
Graduate
Java Developer
4.6157 hours54K learnersCertificate
Learn essential development skills, from basic syntax to advanced features. Build a solid foundation to master any framework you need.
Learn to use AI to code faster.
JetBrains AcademySee course content1 week ago last updated
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Study at your own pace
Fit learning around your schedule. Suitable for all levels.
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Short, practical text lessons by seasoned developers.
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Integrated with professional tools by JetBrains.
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What you'll learn
Dive into Java fundamentals: start with basic Java syntax, learn about common OOP concepts and explore standard data structures. Enhance your knowledge of Java with more complex language features such as multithreading or reflection. The course does not focus on learning frameworks, but the knowledge it provides will help you learn any framework you need. While progressing through different projects of Java Developer you will:
- understand Java syntax and write readable and efficient code;
- apply the principles of object-oriented programming widely used in commercial development;
- simplify your application design with functional programming;
- use collections to effectively process data in your application;
- use multicore processing to optimize the speed of your app;
- apply the basic design patterns;
- work with must-haves of backend development – databases and HTTP requests;
- deal with data formats like JSON and XML;
- get familiar with the essential build tools.
Learn by doing
# 1
Apply knowledge into practice
You already know the theory. Now it's time to code like you do at work—in a professional IDE, with real project constraints, solving problems that actually matter. Welcome to software engineering as it should be.
# 2
Navigate complexity with surgical precision
Most developers waste months learning random concepts without seeing how they connect. Our interactive Knowledge Map fixes this. It shows exactly how every programming concept relates to others, helping you build a structured mental model of coding.
# 3
Copy the best. Then improve.
Here's what top engineers do that others don't: they study other people's code obsessively. When you get stuck on Hyperskill, you can explore solutions published by other developers. See their exact code. Understand their approach. Learn their tricks.
# 4
Code review that actually makes you better
We stripped code review down to what actually matters: does your solution work? Have you handled the edge cases? Is there a cleaner way to write this? Hyperskill acts like a competent reviewer who actually tests your code. Not genius-level analysis, not architecture debates — just solid feedback on making your code better.
Elevate your engineering mastery through real-world challenges
Master advanced engineering concepts through ambitious projects. Each project deepens your expertise and transforms you from an experienced engineer into an exceptional one.
Learning Progress Tracker (Java)
Online learning is gaining popularity. A good education platform can manage registrations, track learning progress, send notifications and newsletters to many users worldwide. It is a huge volume of work indeed. In this project, you will build an application that keeps track of the registered users, their learning progress, and metrics. It will also provide detailed information about each user or any category of users and the overall statistics for the entire learning platform.
Learn from the industry experts
JetBrains Academy
JetBrains Academy is a part of JetBrains, a global software company specializing in the creation of intelligent, productivity-enhancing tools for software developers and teams. With years of expertise in software development and education, JetBrains Academy empowers more than a million people worldwide to learn and teach computer science, and help organizations inspire their teams to reach their goals in tech. Professional development tools play a big role in computer science education. This is why JetBrains Academy courses offer integration with JetBrains IDEs. This integration assists learners in getting experience with real development processes to streamline their learning curve at future work.
Your peers think Hyperskill rocks
3 days ago
This course helped me to remember all basic knowleges about Java programming.
2 weeks ago
An excellent course for learning Java, from simple to more complex topics, with projects that will help you improve your skills and complement the theory.
Victoria Begley
2 weeks ago
I feel like I have learnt so much with this course, from the basics of programming to the more advanced. This will help me greatly with my future work.A small criticism is that sometimes I felt like the organisation of the modules could have been a little better.
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Course provided by JetBrains Academy
Anonymous 154248806has successfully completed the courseJava Developer
Issue date November 27, 2025
266 topics completed
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