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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.

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.

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.

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.

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.

Work with one of our 215 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.


Sumit Kapoor is currently working as a Computer Scientist at Adobe where his day-to-day responsibilities are to work as a full-stack developer in oracle cloud. He has over 5 plus years of experience where he has worked on building products from scratch and has seen them scale from 1 user …

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I am a Lead 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 …

$80 / month
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💼 Davide is a Software Engineer @Microsoft and a top-tier mentor for anyone aspiring to break into the big tech industry, scale up their startups, acquire new technical skills, or wish to collaborate on innovative projects. With a rich background as both a Product Manager and Software Engineer, Davide brings …

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10+ years as professional and experienced engineers in FANNG company. (Uber, Netflix, Bazaarvoice, Coinbase...etc) Conducted interviews regularly for e3-e6 engineers including system design, coding, and behavior rounds. Currently, working as a web3 engineering lead. In addition to my engineering background, I also love to teach. I've conducted several open workshops …

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Are you a junior developer eager to accelerate your career in web development? Do you seek expert guidance on learning the most relevant and up-to-date content, building real-world projects, and excelling in job interviews? Together, let's unlock your full potential by overcoming challenges, addressing your queries, and charting a roadmap …

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Here's the magic I bring to the table: I'm not just about numbers and experience. My passion lies in mentoring and coaching – empowering developers like you to soar towards your aspirations, or even craft new goals that will elevate your career. Together, we'll unlock: 🌟 Your distinct role in …

$420 / month
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When I started my career as an intern near my hometown, it was clear that I had a lot of questions about being a professional, how to plan or manage projects, and best practices when developing software at a professional level. Thankfully, I had great mentors who helped me understand …

$200 / month
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👋 Hello, my name is Mladen. I am a software engineer based in Switzerland, with more than ten years of experience in software engineering. I have a passion for finding user-friendly solutions to complex problems and have done it for products in different industries. As a result, I have broad …

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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.

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

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.

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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."