What is IntelliJ IDEA

This editor is a Java / Kotlin IDE for professional developers by the company JetBrains.

Who is actually JetBrains?

JetBrains is a Czech company focused on developing tools (especially IDE’s) for professional developers and project managers. The most known IDE is PyCharm and IntelliJ IDEA, the considered most powerful Python and Java editors, respectively. Other solutions are DevOps and C++ tools.
JetBrains is the initiator of the Kotlin Programming Language. During their development of IntelliJ IDEA, they noticed some points to make Java better. So they came up with Kotlin, which is able to run on the Java Runtime Enviroment. With this knowledge the IntelliJ IDEA is incredible fast and advanced.

What are the Pros of IntelliJ IDEA

JetBrains says themselfs that every aspect of IntelliJ IDEA is specifically designed to maximize developer productivity. Together, the powerful static code analysis and ergonomic design make development not only productive but also an enjoyable experience.

Deep intelligence

After IntelliJ IDEA has indexed your source code, it offers a blazing fast and intelligent experience by giving relevant suggestions in every context: instant and clever code completion, on-the-fly code analysis, and reliable refactoring tools.

Out-of-the-box experience

Mission-critical tools such as integrated version control systems and a wide variety of supported languages and frameworks are all to hand — no plugin hassle included. This includes Git, Database Tools (SQL), Frameworks (Spring, Java EE) and mobile (Android) and web app (React, Node.js) development.

Smart code completion

While the basic completion suggests names of classes, methods, fields, and keywords within the visibility scope, the smart completion suggests only those types that are expected in the current context.

Framework-specific assistance

While IntelliJ IDEA is an IDE for Java, it also understands and provides intelligent coding assistance for a large variety of other languages such as SQL, JPQL, HTML, JavaScript, etc., even if the language expression is injected into a String literal in your Java code.

Productivity boosters

The IDE predicts your needs and automates the tedious and repetitive development tasks, so you can stay focused on the big picture.

Developer ergonomics

In every design and implementation decision that we make, we keep in mind the risk of interrupting the developer’s flow and do our best to eliminate or minimize it.

The IDE follows your context and brings up the corresponding tools automatically.

Unobtrusive intelligence

The coding assistance in IntelliJ IDEA is not about only the editor: it helps you stay productive when dealing with other aspects as well: e.g. filling a field, searching over a list of elements; accessing a tool window; or toggling a setting, etc.


The good point is that this editor is free for the basic functionality. IntelliJ IDEA is licensed under the Apache 2.0 Opensource Licence. With that you can profit of the language support for Kotlin, Java, Groovy and Scala. You will be able to work on Android projects and have access to version and bundle control like Maven, Gradle, Git and Mercurial. For web and enterprise development however you will need the enterprise version. This will enable the features like Frameworks support and database tools.


IntelliJ IDEA is an alround talent not only for the Kotlin development but aswell for different application fields. The interfaces to different frameworks, languages and tools, are making the coding with this editor fun.

Next Step

Go on to the next page to find out how to download IntelliJ IDEA.