We Prwatech the Pioneers of Apache Spark training offering advanced certification course and Installation of Scala Programming Language to those who are keen to explore the technology under the World-class Training Environment.<\/p>\n
What to Use Today<\/h2>\n\n- <\/b>IntelliJ IDEA with the Scala plugin, <\/b><\/strong>the option the official Scala documentation recommends first. Install IntelliJ IDEA, Community Edition is free, then add the Scala plugin from within IntelliJ’s plugin marketplace. This is the most complete, well maintained Scala experience available today, and the one most new learners should reach for.<\/li>\n
- <\/b>VS Code with the Metals extension, <\/b><\/strong>a lighter option built around the Scala compiler’s own language server. This suits people who already live in VS Code for other languages and want Scala support added to the same editor rather than switching tools entirely.<\/li>\n<\/ul>\n
If You Are Following the Classic Scala IDE for Eclipse Setup<\/h2>\n
The steps below still work if your organization or course specifically requires the Eclipse based Scala IDE, and the Scala language concepts they demonstrate remain accurate regardless of which IDE you end up using.<\/p>\n
Step 1: Download Scala IDE<\/h3>\n
Make sure Java 8 is installed on your system before you begin.<\/p>\n
![\"Apache](\"https:\/\/prwatech.in\/blog\/wp-content\/uploads\/2019\/03\/1-9.png\")
<\/strong><\/p>\nNote:- make sure in your system Java 8 be install<\/strong><\/p>\nStep 2: Open the Downloaded File<\/h3>\n
Go to the downloaded file and open Eclipse from it.<\/p>\n
![\"Apache](\"https:\/\/prwatech.in\/blog\/wp-content\/uploads\/2019\/03\/6-18.png\")
<\/p>\n
Step 3: Select a Workspace and Install Eclipse<\/h3>\n
![\"Apache](\"https:\/\/prwatech.in\/blog\/wp-content\/uploads\/2019\/03\/3-9.png\")
<\/strong><\/p>\nStep 4: Create a New Scala Project<\/h3>\n
Once Scala IDE is open, go to the File menu, select New, then Scala Project. Give the project a name and select Finish.<\/p>\n
![\"Apache](\"https:\/\/prwatech.in\/blog\/wp-content\/uploads\/2019\/03\/create-scala-proj.jpg\")
<\/p>\n
![\"Apache](\"https:\/\/prwatech.in\/blog\/wp-content\/uploads\/2019\/03\/proj-name.jpg\")
<\/p>\n
Step 5:\u00a0Create a Scala object<\/h3>\n
Create a new Scala Object using File -> New -> Scala Object :<\/strong><\/p>\n![\"Apache](\"https:\/\/prwatech.in\/blog\/wp-content\/uploads\/2019\/03\/obj-crt.jpg\")
<\/p>\n
Give your Scala application a name, then select Finish to create the file.<\/p>\n
![\"Apache](\"https:\/\/prwatech.in\/blog\/wp-content\/uploads\/2019\/03\/scala-object-1024x481.jpg\")
<\/p>\n
Step 6: Add code that prints Hello Scala<\/h3>\n
Add the following code in HelloWorld.scala
\nobject HelloWorld {<\/p>\n
def main(args: Array[String]): Unit = {<\/p>\n
println(“Hello, world!”)<\/p>\n
}<\/p>\n
}<\/p>\n
![\"Apache](\"https:\/\/prwatech.in\/blog\/wp-content\/uploads\/2019\/03\/helloworld.jpg\")
<\/p>\n
Step 7: Run the Scala program<\/h3>\n
Click on Run button or Run menu to run this as a Scala application<\/p>\n
Right Click on that &\u00a0Run As \u2192Scala Application<\/strong><\/p>\n![\"Apache](\"https:\/\/prwatech.in\/blog\/wp-content\/uploads\/2019\/03\/run.jpg\")
<\/p>\n
NOTE:\u00a0Set the Run configuration if needed.<\/p>\n
OUTPUT :<\/span><\/strong><\/h3>\n![\"Apache](\"https:\/\/prwatech.in\/blog\/wp-content\/uploads\/2019\/03\/out.jpg\")
<\/p>\n
Example Programs in Scala IDE<\/h2>\n
The four programs below show additional Scala examples run the same way, written, saved, then executed as a Scala Application from inside the IDE.<\/p>\n
Program 1<\/h3>\n
![\"Apache](\"https:\/\/prwatech.in\/blog\/wp-content\/uploads\/2019\/03\/1-23.png\")
<\/strong><\/p>\n![\"Apache](\"https:\/\/prwatech.in\/blog\/wp-content\/uploads\/2019\/03\/2-22.png\")
<\/strong><\/p>\nProgram 2<\/h3>\n
![\"Apache](\"https:\/\/prwatech.in\/blog\/wp-content\/uploads\/2019\/03\/3-23.png\")
<\/strong><\/p>\nProgram 3<\/strong><\/p>\n![\"Apache](\"https:\/\/prwatech.in\/blog\/wp-content\/uploads\/2019\/03\/4-18.png\")
<\/strong><\/p>\nProgram 4<\/strong><\/p>\n![\"Apache](\"https:\/\/prwatech.in\/blog\/wp-content\/uploads\/2019\/03\/5-18.png\")
<\/strong><\/p>\nCommon Mistakes to Avoid<\/h2>\n
If You Are Following the Classic Scala IDE for Eclipse Setup<\/h2>\n
The steps below still work if your organization or course specifically requires the Eclipse based Scala IDE, and the Scala language concepts they demonstrate remain accurate regardless of which IDE you end up using.<\/p>\n
Step 1: Download Scala IDE<\/h3>\n
Make sure Java 8 is installed on your system before you begin.<\/p>\n
Note:- make sure in your system Java 8 be install<\/strong><\/p>\n Go to the downloaded file and open Eclipse from it.<\/p>\n Once Scala IDE is open, go to the File menu, select New, then Scala Project. Give the project a name and select Finish.<\/p>\n Create a new Scala Object using File -> New -> Scala Object :<\/strong><\/p>\n Give your Scala application a name, then select Finish to create the file.<\/p>\n Add the following code in HelloWorld.scala def main(args: Array[String]): Unit = {<\/p>\n println(“Hello, world!”)<\/p>\n }<\/p>\n }<\/p>\n Click on Run button or Run menu to run this as a Scala application<\/p>\n Right Click on that &\u00a0Run As \u2192Scala Application<\/strong><\/p>\n NOTE:\u00a0Set the Run configuration if needed.<\/p>\n The four programs below show additional Scala examples run the same way, written, saved, then executed as a Scala Application from inside the IDE.<\/p>\n Program 3<\/strong><\/p>\n Program 4<\/strong><\/p>\n<\/strong><\/p>\nStep 2: Open the Downloaded File<\/h3>\n
<\/p>\nStep 3: Select a Workspace and Install Eclipse<\/h3>\n
<\/strong><\/p>\nStep 4: Create a New Scala Project<\/h3>\n
<\/p>\n<\/p>\nStep 5:\u00a0Create a Scala object<\/h3>\n
<\/p>\n<\/p>\nStep 6: Add code that prints Hello Scala<\/h3>\n
\nobject HelloWorld {<\/p>\n<\/p>\nStep 7: Run the Scala program<\/h3>\n
<\/p>\nOUTPUT :<\/span><\/strong><\/h3>\n
<\/p>\nExample Programs in Scala IDE<\/h2>\n
Program 1<\/h3>\n
<\/strong><\/p>\n<\/strong><\/p>\nProgram 2<\/h3>\n
<\/strong><\/p>\n<\/strong><\/p>\n<\/strong><\/p>\nCommon Mistakes to Avoid<\/h2>\n