Java, one of the world’s top coding languages, is used to build the back-end components of applications. Although users don’t see or interact with these components, they are essential for the front end to work.
In more technical terms, Java is a class-based, object-oriented programming language. This is a type of programming where the structure and behavior of an object are defined by a class, which is a definition, or blueprint, of all objects of a specific type. In Java, programs are built and organized around collections of objects.
Java is what’s known as a compiled language, meaning that it has to be translated from source code written in the Java Development Kit (JDK) into bytecodes. These bytecodes are then executed in the Java Virtual Machine (JVM), which can be found in most any type of computer, operating system and platform. Java-based programs are platform-independent and can even be run in a browser.
As Java code is being written, the JVM compiler checks the code thoroughly for possible errors. In addition, Java has rather strict rules for declaring variables and types. This makes Java reliable, which in tech terms is known as “robust,” as well as highly secure. Java can also support multi-threading, the capability to run multiple tasks simultaneously, maximizing CPU resources and optimizing performance.
Because it’s so robust and versatile, Java is a strong choice for back-end web development. You can find Java in desktop applications, Android applications, and all types of web applications, including banking and financial, big data, social networks, and legacy software that’s been connected to web interfaces.
If you peek behind the scenes at the back-end, you can find Java on Airbnb, Amazon Web Services, eBay, Uber, Netflix, Spotify, and Minecraft, just to name a few.
If you’re planning to work on desktop applications, Android apps, data analytics, or focus on the server side, it’s ideal to learn Java first. Java can teach you good coding habits from the beginning to help you build a strong foundation in object-oriented programming. Many large companies tend to look for developers with experience in Java, so learning it can boost your job prospects.
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