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How to learn Java

Got a big interview coming up? A long-held dream to learn about Java? Our mentors can help you prepare and learn more about Java and get you towards your goal quicker

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Read the best books to build Java understanding.

A well-written and thorough book can be an amazing path to build deeper understanding of Java and also act as a handbook as you discover the internet's vast resources.

These are our and our experts top picks to get started building career-relevant skills.

Head First Java

Head First Java

Learning a complex new language is no easy task especially when it s an object-oriented computer programming language like Java. You might think the problem is your brain. It seems to have a mind of its own, a mind that doesn't always want to take in the dry, technical stuff you're forced to study.

Clean Code

Clean Code

Even bad code can function. But if code isn’t clean, it can bring a development organization to its knees. Every year, countless hours and significant resources are lost because of poorly written code. But it doesn’t have to be that way.

Effective Java

Effective Java

Java has changed dramatically since the previous edition of Effective Java was published shortly after the release of Java 6. This Jolt award-winning classic has now been thoroughly updated to take full advantage of the latest language and library features. The support in modern Java for multiple paradigms increases the need for specific best-practices advice, and this book delivers.

Test Driven: TDD for Java Developers

Test Driven: TDD for Java Developers

In test driven development, you first write an executable test of what your application code must do. Only then do you write the code itself and, with the test spurring you on, you improve your design.

Java Performance

Java Performance

Coding and testing are often considered separate areas of expertise. In this comprehensive guide, author and Java expert Scott Oaks takes the approach that anyone who works with Java should be equally adept at understanding how code behaves in the JVM, as well as the tunings likely to help its performance.

Work with one of our 6 Java mentors available

Self-teaching is a great tool, but working with an experienced mentor can accelerate your learnings by 10x.

Our mentors are hand-picked Java experts who will help you learn Java and guide you towards your goals.


Amrit Sarkar is working in the tech space for the last 7+ years in developer and managerial roles, currently as Engineer at Apple. Amrit has contributed more than 50+ patches in ASF projects. He has trained more than 500 peers in Search space in Lucene, Solr, Docker and Kubernetes in …

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I am an android developer. I have worked as a software developer since 2005 and later focused extensively on mobile applications since 2015. Along the way, I also had the opportunity to lead and train other developers. A computer geek enjoys mobile apps, learning new things daily, reading books about …

$80 / month
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As a highly skilled and analytical developer, I harness imagination, technology and various methods to solve problems. With more than a decade of experience as a software developer, I have an incredible knack for finding practical and elegant, user-centered solutions that drive business priorities. I subscribe to agile, pair programming(where …

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I'm a self-taught Developer with experience at large B2C companies like Deliveroo and Memrise. I have a track record of helping people get their first jobs in Tech as well as upskilling Developers to get significant pay increases. I'm very proud of the work I've done with my mentees, check …

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❇️ "I learned a lot from you and you set up the standard for how to write better code" ❇️ "Yours was one of the few 1:1 syncs where I always found we ran out of time and had more to talk about, outside of just pure engineering. Thanks for …

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β©€ ⴰ⡎⡒ⴰ Who are you? β©₯ ~𐦊𐦊𐦊𐦊𐦊𐦊𐦊~ Software Engineer and architect with web3 experience, open source software and decentralized stacks. Having a widespread background of cross domains hands on technical experience and skills sets. Web application development, performance analysis and optimisations, system design and architecture, with a strong handle of …

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As a seasoned software architect boasting 15+ years of expertise in Java, Spring, Spring Boot, SOA, and Microservices, I bring a wealth of knowledge to guide you through the exciting journey of mastering Spring Boot, and Microservices development. Whether you're a novice eager to dive into Java development or a …

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Hello! I'm Ivan Zakharchanka, a seasoned Senior Software Engineer with nearly two decades of immersive experience in the ever-evolving realm of full-stack web development. My journey has been characterized by a relentless pursuit of crafting exceptional software solutions that not only meet functional requirements but also enhance user experiences, making …

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Courses to deepen your Java skills.

These days, courses are no longer a sequence of videos. They are usually accompanied by projects and a learning community, keeping you accountable and on the path.

Our experts recommend these courses, from free selections to paid programs.

CodeGym

CodeGym

There are tons of good books on the Internet, but you won't become a programmer by reading books. To learn Java and become a programmer, you need to write a lot of code.

CodeGym is an online Java programming course consisting of 80% practice and 20% of the essential Java theory. This is what you need to become a real Java developer.

Java Programming A-Z

Java Programming A-Z

Everything you need to know about Java programming to make you first steps as a software engineer.

Java Fundamentals

Java Fundamentals

This course provides complete coverage of the Java programming language and serves as a strong foundation for all Java-based development environments including client-based, server-side, and Android.

Oracle Java Certification

Oracle Java Certification

This course will help you learn the steps to becoming an Oracle Certified Associate (OCA) and get a higher paying job!

Take the Oracle Java Associate Programmer exam confidently knowing you can pass it

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  • "Naz is an amazing person and a wonderful mentor. She is supportive and knowledgeable with extensive practical experience. Having been a manager at Netflix, she also knows a ton about working with teams at scale. Highly recommended."

  • "Brandon has been supporting me with a software engineering job hunt and has provided amazing value with his industry knowledge, tips unique to my situation and support as I prepared for my interviews and applications."

  • "Sandrina helped me improve as an engineer. Looking back, I took a huge step, beyond my expectations."