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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 isnโ€™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 doesnโ€™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 214 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.

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My favorite thing about programming is that it's accessible to everyone and I love helping people understand just how easy programming can be. I've helped developers in all different places in life, everywhere from getting their first job, to navigating difficult communication with their managers, to getting a great new โ€ฆ

$100 / month
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I wrote my first code in Commodore 64 Basic when I was 10. Then learned 6510 assembly, and switched to Amiga and AMOS. After that was the proud owner of i486DX2 (blazing fast 66MHz) when I was coding in Borland C++ and Turbo Pascal. At the end of my teen โ€ฆ

$50 / month
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As a self-taught software engineer and former Amazonian, I can relate to how important a mentor is to developing as an engineer. A good mentor has allowed me to progress my career tremendously fast and keep it fun while at it. Whether is was landing the first job, increasing my โ€ฆ

$300 / month
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I am a Software Engineer with great proficiency in Front-end development and Javascript framework. I have over 4 years of hands-on experience building technology products across diverse organizations. I work for the British Broadcasting Corporation (BBC) in the United Kingdom. I have both organised and been a part of mentorship โ€ฆ

$260 / month
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Hi there! ๐Ÿ‘‹ Iโ€™ve been unofficially mentoring developers for many years now. Iโ€™ve learned many things the hard way or the slow way in the last 15 years working as a software engineer. Any week that I can meaningfully help someone else on their programming journey is a good week โ€ฆ

$200 / month
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I love to code, and I love to help people learn how to code. I have been coding professionally for over eight years. I have been teaching people how to code for over five years. Some of my favorite memories are seeing people's faces light up when they finally understand โ€ฆ

$180 / month
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๐Ÿ’ผ 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 โ€ฆ

$100 / month
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I helped hundreds of colleagues to become more efficient programmers. Coding, data structures and algorithms, debugging techniques, infrastructure design and much more. Whether you build your own startup and need occasional advise or want to improve your job performance to get a promotion - I can help you achieve these โ€ฆ

$300 / month
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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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Book a Java mentor
  • "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."