Scala Environment Setup

Before installing scala you need to install java (1.5 or higher version) on your system.

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Installation on Windows
Step 1: Verify the JDK installation on your machine. Open the shell/terminal and type java -version and javac -version
Step 2: Download Scala 2.11.7 binaries in the system from  http://www.scala-lang.org/download/ and then run the downloaded file

scala installation1

Step 3: Click on next button

scala installation2

Step 4: Select the check box

scala installation3

Step 5: If you want to change the location then select the folder where you want to install it otherwise click on next.

scala installation4

Step 6: Click on install button
scala installation5

Step 7:
scala installation6

Step 8: Click on finish button
scala installation7

Step 9: Set path
To include the scala directory to the path use the following command in windows:-
Right-click on My Computer ->Properties ->Advanced System setting ->Environment Variable ->Select Path->Edit
Then it will open a box in which you add the path where the java is installed by using ; (semicolon).

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For Example:
If it contains ‘C:\Windows\System32′ then change your path by ‘C:\Windows\System32; C:\Program Files\scala\bin’.

 Step 10: Then type scala in command-line mode
scala installation8

Installation on Linux or on Mac
Scala installation on Linux, Ubuntu, Mac OS X or any Unix based system is the same.
Step 1: Verify the JDK installation on your machine. Open the shell/terminal and type java -version and javac –version
Step 2: Download Scala Binaries from http://www.scala-lang.org/download/ and then unzip the scala-2.11.7.tgz file using the following command-

$ tar -xvzf scala-2.11.7.tgz
scala-2.11.7/
scala-2.11.7/man/
scala-2.11.7/man/man1/
scala-2.11.7/man/man1/scala.1
scala-2.11.7/man/man1/scalap.1
scala-2.11.7/man/man1/fsc.1
scala-2.11.7/man/man1/scaladoc.1
scala-2.11.7/man/man1/scalac.1
scala-2.11.7/bin/
scala-2.11.7/bin/scalac
...

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Step 3: After unzip, change the path to point to the directory using cd command. By default directory is download.

$ cd ~/Downloads
[[email protected] Downloads]$

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Step 4: At that time you are in the download folder where the scala binaries are present. Just go to the bin directory.

[[email protected] Downloads]$ cd scala-2.11.7
[[email protected] scala-2.11.7]$cd bin


Step 5: Then enter the scala shell as follows-

[[email protected] bin]$ ./scala
Picked up _JAVA_OPTIONS: -Dawt.useSystemAAFontSettings=on -Dswing.aatext=true -Dswing.defaultlaf=com.sun.java.swing.plaf.gtk.GTKLookAndFeel
Welcome to Scala version 2.11.7 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_20).
Type in expressions to have them evaluated.
Type :help for more information.
scala>

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Set PATH for Scala
Use the following command for setting PATH for Scala.

$ export PATH = $PATH:/Downloads/scala/bin

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