A simple program in Scala using Eclipse IDE 

• Step 1: Setup your Eclipse IDE for Scala development
• Step 2: In Eclipse, create a NEW Scala project
  From the File menu, select New -> Scala project and provide the project with a name.
• Step 3: Create a Scala object
  Create a new Scala Object using File -> New -> Scala Object and provide a name for your Scala application - > CLICK Finish to create the file.
• Step 4: Write your program code.

Example:  

• Step 5: Run the Scala program
  Click on the Run button or select Run from the menu to run the Scala application. If necessary, set the Run configuration.   
  Output:

With Scala, you can both develop functional PROGRAMS and Object-Oriented applications! Not so difficult, was it? As a result, the need for Scala specialists is growing worldwide. To gain access to the growing pool of job opportunities for Scala experts, you must first get a good score on the Scala Interview. To help you out, we have compiled a list of 35+ of the most commonly asked Scala interview questions and answers to provide some insight into what Scala interviewers are really interested in. For the freshers and experienced developers, these questions will be a great help in preparing for a software development job. For the pros, it will be a helpful tool for implementing improvements in their everyday coding practices. It should be noted that this list isn't exhaustive; Scala has several nuanced aspects that are better mastered with practice. 

Useful Resources:

Scala Documentation

Spark Interview