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Welcome to Tracks

Treehouse Tracks are guided curriculums that cover all relevant Courses and Workshops necessary to master a subject. Treehouse’s learning library includes dozens of Tracks on a variety of topics including web design, programming, and more. With Compass, you’ll also be able to test out of subjects you already know, and create a custom curriculum for your learning goals.

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17 hours Track

Intermediate Java

Java made its debut in 1995 and is now the most popular language in the world. It is commonly used for everything from smartphones, tablets, watches, servers, information security, artificial intelligence, games, and even robots! Because of its maturity and popularity, learning Java is a great way to land a software development job in just about any market.

This 17-hour Track will guide you through the more intermediate parts of the language and help you gain the experience and confidence you need to explore any direction your programming adventures may lead.

As a prerequisite for this Track, we recommend our Beginning Java Track.

We'll begin with a quick workshop on regular expressions in Java, to learn to use them for searching, replacing and validating that text meets certain formats. Then we'll dive right into a course on local development environments and how to set yours up.

Next, we'll touch on Java lambdas, which can be used any place a Single Abstract Method was used, before embarking on a Unit Testing course. We'll cover the essentials, including defining a unit, composition vs. inheritance, test fixtures, test suites, and the jUnit test runner. Then, a workshop on dependency management with Gradle.

The next 4 hours of the Track are dedicated to functional programming. You'll master imperative vs. declarative syntax, lambdas & method references, streams, functional programming concepts, and higher order functions and closures.

In the following course, Java Annotations, we'll first explore the basic use of annotations to give the compiler instructions. Then, we'll use more advanced techniques to create our own annotation and look for it using reflection.

Next, you'll complete a workshop on Maven, and then a workshop on debugging. Finally, you'll work on a project to build a Pomodoro timer using JavaFX.

This Track will take you to the next level in the wonderful world of Java programming. Let's go!

  • An entry-level salary for the technologies covered in this track is about $70,000 / yr on average.

  • Some companies that use these technologies regularly include: eBay, PayPal, Amazon, Google, Twitter,, Square, and Facebook