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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 213 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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I am a full stack web developer who is passionate about JavaScript. I have effective communication skills that help me break down difficult concepts for others to understand. Both our time is valuable and I will work hard to make sure we use each other's time effectively.

$180 / month
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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 โ€ฆ

$80 / month
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Ready to grow in your career? I can mentor you to achieve it! I usually help developers to understand what their boss expects from them, set goals, create a career plan, get promoted, perform well, be the employee all the companies are looking for and deliver results/projects. I had my โ€ฆ

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Rest Apart - I can help you build a Software Developer career with no experience/background. I am a software developer with a passion for building products. At the moment, Apart from my full-time job, I spend most of the time building an org. for providing opportunities to scholars product is โ€ฆ

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Hi! I'm Addy, I'm a software engineer @Booking.com and an interview engineer @Karat. I'm an ex software engineer @Amazon and @Microsoft. I have conducted 1350+ interviews for different companies, and I have been interviewed by 500+ companies in the last 10 years. I have passed the technical interviews as a โ€ฆ

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Hello everyone! I'm Rick. Over the past 10 years, I have worked at FAANG companies and fast-paced startups. I love mentoring and helping those who are still early in their careers and looking for guidance, whether it be getting to know the industry, interview preparation, high-level career direction, or learning โ€ฆ

$180 / month
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Hi, I'm Ramรณn. I like to create solutions that solve real-world problems for individuals and businesses. I love helping other creators solve problems effectively and efficiently. I am a full-stack software engineer currently working at flick. I design and implement scalable code in TypeScript, and I deploy to resilient infrastructure โ€ฆ

$230 / month
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๐Ÿ‘‹ Welcome! I'm Andy, a self-taught developer with a unique background in paediatric nursing and recruitment. In 6 months, I successfully transitioned to tech and have worked at an AI company and now HealthTech (so yes it is possible ๐Ÿ˜Š) For your journey I want to help you as much โ€ฆ

$180 / 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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  • "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."