Hello World Program Example in Scala with Eclipse IDE

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In this Apache Spark Scala tutorial, you will learn how to create,

• "Hello World" Scala application with Eclipse Scala IDE.

• Scala application, project, package, objects, run configuration, and debug the application.

The motive is to get you guys familiar with Scala IDE.

I assume that you have already installed Eclipse Scala IDE, if not please refer to my previous post for installation (Windows | Mac users). Next, open Eclipse Scala IDE.

Scala Hello World Example

1. Create a new Scala project "hellooWorld"

• Go to File → New → Project and enter hellooWorld in the project name field and click finish.

2. Create a new Scala Package "hellooWorld"

• Right-click on the hellooWorld project in the Package Explorer panel → New → Package and enter the name hellooWorld and finish.

3. Create a Scala object "hello":

• Expand the hellooWorld project tree and right-click on the hellooWorld package → New → Scala Object → enter hello in the Object name field and press finish.

4. Write the program to print the Hello World message.

package hellooWorld 
object hello {
  def main (args: Array[String]) {
    println("Hello World")
  }
}

5. Create a Run configuration for the Scala application:

• Right-click on hello.scala in package explorer → Run As → Scala Application. Select the first matching item, the HellooWorld class, and click OK.

• You can also define the configuration manually and run it. Just mention the project and class name.

• That's it. You can see the output Hello World in the output console.

That's all guys! If you face any problem while running the program please mention it in the comments section below. Thank you.

Next: Spark Shell

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​1. Apache Spark and Scala Installation

1.1 Spark installation on Windows​

1.2 Spark installation on Mac

2. Getting Familiar with Scala IDE

2.1 Hello World with Scala IDE​

3. Spark data structure basics

3.1 Spark RDD Transformations and Actions example

4. Spark Shell

4.1 Starting Spark shell with SparkContext example​

5. Reading data files in Spark

5.1 SparkContext Parallelize and read textFile method

5.2 Loading JSON file using Spark Scala

5.3 Loading TEXT file using Spark Scala

5.4 How to convert RDD to dataframe?

6. Writing data files in Spark

​6.1 How to write single CSV file in Spark

7. Spark streaming

7.1 Word count example Scala

7.2 Analyzing Twitter texts

8. Sample Big Data Architecture with Apache Spark

9. What's Artificial Intelligence, Machine Learning, Deep Learning, Predictive Analytics, Data Science?

10. Spark Interview Questions and Answers