What Is Java and What’s It For? Here’s the Complete Guide

What Is Java and What’s It For? Here’s the Complete Guide
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del 13/12/2022

Java (Programming Language)

Java is a general-purpose programming language used to develop web pages. It’s one of the most familiar and popular languages, especially for client-server web apps.

Initially called “Oak”, Java was produced by Sun Microsystems in 1992. The name was later changed to Java for copyright reasons, as there was already a programming language called Oak. The basic syntax of Java centres on languages like C++, but other features (allowing the introduction of specific bugs during programming) have since been introduced. For example:

  • Pointer arithmetic;
  • Class multiple inheritance.

Sun Microsystems had initially decided to use the Java programming language to create complex applications for small electronic devices. In 1993, the advent of the Internet gained Java recognition as a programming tool for the World Wide Web. This would mark the start of an evolution in the digital tech field: thanks to the introduction of Java, web pages became interactive at the client level without the need for applications to be run on a remote server. As a result, users could – for example – play games directly on a website and participate in dynamic, interactive chat rooms with no problems.

Java was proclaimed an official programming language on 23 May 1995 at SunWorld.

Today, however, it belongs to and is managed by Oracle, and is a free, object-oriented, class-based and statically-typed language.

Table of Contents

  1. What’s Java and What Is It For?
  2. Who Are Java Developers, What Do They Do and How Much Do They Earn?
  3. Summing Up

What’s Java and What Is It For?

Java’s slogan is “WORA” (“Write Once, Run Anywhere”). Java was designed with the aim of having the least possible number of implementation dependencies, thus allowing developers to “write once, run everywhere”. Java code can operate on different platforms, which means that once you’ve run it on one platform, you don’t need to recompile it on another.

More than just a programming language, Java refers to the whole ecosystem surrounding it, made up of three key components:

  1. Java Virtual Machine (JVM), a virtual platform-independent running environment that can convert Java bytecode into machine language and use it.
  2. Java Runtime Environment (JRE), is a key runtime environment for the running of programs and applications.
  3. Java Development Kit (JDK). This third component is the main element in the Java environment, as it contains JRE as well as the Java compiler, debugger and other classes.

In any case, as previously mentioned, one of the advantages of the Java programming language is the fact that it’s object-oriented. This means the grouping of data and procedures in a single entity recognized as a class, as well as the creation of a “software object” – that is, a container within which we find all the data and methods operating on it.

Java also uses the process of automatic garbage collection to monitor and manage the lifecycle of objects. Basically, Java developers creates objects and the automatic garbage collection process frees up memory when these objects are no longer used or needed.

Java code is simple and safe, and represents a key technology for the careers of back-end, full-stack and web developers.

Nowadays, thanks to the web, we have the opportunity to learn new things every day, anytime and from anywhere. Thinking of becoming a Java developer? Looking for an online course? You’re in the right place!

EPICODE School offers online bootcamp courses that last just three months. Professional experts will teach you all there is to know about the programming language Java, and you’ll have the chance to put yourself to the test right away. Once your three months with Epicode are up, you’ll have the necessary preparation and skills for the world of web programming.

Who Are Java Developers, What Do They Do and How Much Do They Earn?

Today, figures like web developers, front-end, back-end and full-stack developers are greatly in demand on the job market, and knowledge of programming languages like Java is one of the most sought-after skills by companies.

The job of Java developer corresponds to that of back-end and full-stack developer. Java developers specialize in this programming language, which is the second most-used and sought-after by companies worldwide.

Java developers program websites, applications and databases via the Java platform, which lets us design these products and services and keep them updated. Developers also contribute to the creation of software and take part in tests and so-called debugging activities (to correct any app or program malfunctioning).

The yearly income for Java developers varies greatly depending on experience, as well as on the seniority and responsibilities required by each project. Salaries range from approximately € 32,000 per year to almost € 60,000 per year, which in Italy corresponds to a monthly net salary ranging from € 1,700 to € 3,500.

If you want to embark on a career as a developer, just request more info on our courses.

Summing Up

Nowadays, Java programmers are key figures for millions of companies all over the world; in the next few years, this job is set to grow and become more and more in demand.

In this article, we’ve spoken of the importance and success of the programming language Java, as well as why it can be used in several applications. This programming language represents a key skill for a web developer, a profession that is constantly growing and changing.

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