#Intellij idea scala install#

IntelliJ also creates the project folder which has two important files namely: If you are not familiar with SBT, no need to worry, I will go over it later. The build.sbt file is a very important file as it is used by SBT (Scala Build Tool) to essentially package your application. As such, the files and folders within the target directory is automatically managed by IntelliJ and you should not place any of your application files here. The src/target folder is where IntelliJ will keep the compiled versions of your Scala application files. The src/test folder has a similar folder hierarchy as src/main namely: As an example, if you were writing an Akka application, you would add your nf file under src/main/resources. Under this folder, you can add any configuration files which would be visible in your Scala application's classpath. Scala has built-in support to interoperate with Java classes and as such you should place your Java classes under the src/main/java folder. It is a placeholder where you can store and expose globally scoped objects and functions such as implicit conversion. The singleton pattern is such a commonly used pattern that Scala has built-in support for it.Ī package object will also be a new term if you have never done any Scala. However, a trait provides higher semantics than an interface which we will discuss later.Īn object in Scala is a singleton! This means there will be only one instance of this object within your application/JVM. NET in that it is a contract for your method or function signatures. You can think of it as having similar behaviour to an interface in Java and or. NET in that it is a placeholder for your methods or functions.Ī trait is most certainly going to be a new term if you have never done any Scala. I will go over these terms in more details in upcoming tutorials, but let's have a quick explanation for each one:Ī class is conceptually similar to any other classes if you have done Java or.

What are classes, traits, objects and package objects?.For now, you should see the HelloWorld object which we created in Scala Hello World in IntelliJ tutorial. This is the location where you will create your Scala files such as classes, traits, objects and package objects. In the Project panel of IntelliJ, you will see the src/main/scala folder.

#Intellij idea scala install#

If you do not have IntelliJ installed, you can follow the instructions from Install IntelliJ tutorial.Open IntelliJ IDE and on the welcome screen you should see the allaboutscala project which we created in Scala Hello World in IntelliJ tutorial. In this tutorial, we will go over the main components that make up a Scala project.