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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 216 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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Hello ๐Ÿ‘‹ I'm Robert Crocker, and I am passionate about Front-End Development and Data Visualization. With over a decade of experience in front-end development, I have so much knowledge and skills to share. As a mentor, my mission is to support individuals in reaching their full potential and realizing their โ€ฆ

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๐Ÿ‘‹ 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 โ€ฆ

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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 โ€ฆ

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Hi, I'm Ioana, and I'm here to empower your tech career journey, whether you're aiming for Big Tech or any other exciting tech venture. With over a decade of experience as a developer, encompassing both backend and frontend expertise, as well as a deep dive into the world of CS โ€ฆ

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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

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Unfortunately, I am unable to take on any new mentees for career or interview coaching.

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With over 12 years of experience in web development, Jeff is a senior frontend engineer. Jeff is proficient in React, Redux, Material UI, Apollo GraphQL, HTML5, Node.js, Next.js, Remix, React-Query, React-router as well as other technologies and tools that keep him updated and adaptable in the fast-growing frontend community. Jeff โ€ฆ

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Hello, I'm Ben! I've spent the majority of my career as a Software Engineer at Microsoft. I'm passionate about open source, crypto and the future of the web. My day job is spent working on a range of client-side javascript/typescript, mostly related to service workers and react.js. I also have โ€ฆ

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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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