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How To Install Scala 2.11.4 on Ubuntu: Step-by-Step Guide

Ubuntu 13

In this comprehensive guide, we’ll walk you through the process of installing Scala 2.11.4 on Ubuntu. Scala is a modern multi-paradigm programming language designed to express common programming patterns in a concise, elegant, and type-safe way.

Prerequisites

Before starting, ensure that you have a functioning Ubuntu system and have superuser (sudo) privileges.

Installation Methods

There are several methods to install Scala on Ubuntu. We will cover three of them:

  1. Using the .deb installation file
  2. Using GDebi
  3. Manual installation

Let’s dive into each method.

Method 1: Using the .deb Installation File

This method involves downloading the Debian (.deb) package from the official Scala website and installing it using the dpkg command.

Step 1: Download the .deb File

Visit the Scala download page and locate the version you want (in this case, Scala 2.11.4). Scroll down to the bottom of the version’s page and download the scala-2.11.4.deb file.

Step 2: Install the .deb File

Open a terminal and navigate to the directory where the .deb file is located. Run the following command to install Scala:

sudo dpkg -i scala-2.11.4.deb

The -i parameter stands for ‘install’. This command will install the package.

Method 2: Using GDebi

If you’re not comfortable with the command line, you can use GDebi, a simple tool to install .deb files. It has a graphical user interface and also handles dependencies.

Step 1: Install GDebi

You can install GDebi using the Ubuntu Software Center or by running the following command in a terminal:

sudo apt-get install gdebi

Step 2: Install Scala with GDebi

After downloading the scala-2.11.4.deb file as mentioned in Method 1, open your file browser, locate the .deb file, and double-click on it to open GDebi. Click “Install Package” to install Scala.

Method 3: Manual Installation

This method involves downloading the Scala tarball, extracting it, and manually adding it to your PATH environment variable.

Step 1: Download the Scala Tarball

Download the scala-2.11.4.tgz file from the Scala download page.

Step 2: Extract the Tarball

Open a terminal and navigate to the directory where the .tgz file is located. Extract the contents of the archive using the following command:

sudo tar xvfz scala-2.11.4.tgz

The x stands for ‘extract’, v for ‘verbose’ (showing the progress), f for ‘file’ (use archive file), and z for ‘gzip’ (filter the archive through gzip).

Step 3: Move the Extracted Directory

Move the extracted directory to a desired location, such as /opt/scala, with the following command:

sudo mv scala-2.11.4 /opt/scala

Step 4: Add Scala to Your PATH

Add Scala to your PATH environment variable by editing the .bashrc file in your home directory. Run the following commands in the terminal:

echo 'export SCALA_HOME="/opt/scala"' >> ~/.bashrc
echo 'export PATH="$PATH:$SCALA_HOME/bin"' >> ~/.bashrc

This will add the necessary lines to your .bashrc file.

Step 5: Reload Your Shell

Reload the shell for the changes to take effect by running:

exec $SHELL

Conclusion

After completing any of the above methods, you can start the Scala interpreter by opening a terminal and typing scala. This guide should have provided you with detailed instructions on how to install Scala 2.11.4 on Ubuntu. Happy coding!

What is Scala?

Scala is a modern multi-paradigm programming language designed to express common programming patterns in a concise, elegant, and type-safe way. It combines object-oriented and functional programming concepts.

What are the prerequisites for installing Scala on Ubuntu?

Before installing Scala on Ubuntu, you need to have a functioning Ubuntu system and have superuser (sudo) privileges.

How can I install Scala using the .deb installation file?

To install Scala using the .deb installation file, you need to download the Debian (.deb) package from the official Scala website and then use the dpkg command to install it. Detailed instructions can be found in the guide above.

How can I install Scala using GDebi?

If you prefer a graphical user interface, you can use GDebi to install Scala. First, you need to install GDebi using the Ubuntu Software Center or by running the sudo apt-get install gdebi command in a terminal. Then, you can open the .deb file with GDebi and click "Install Package" to install Scala.

How can I manually install Scala?

Manual installation of Scala involves downloading the Scala tarball, extracting it, and adding it to your PATH environment variable. Detailed instructions can be found in the guide above.

How do I start the Scala interpreter after installing Scala?

After completing any of the installation methods mentioned above, you can start the Scala interpreter by opening a terminal and typing scala. This will launch the Scala REPL (Read-Eval-Print Loop), where you can write and execute Scala code.

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