How To Install libfreemarker-java on Ubuntu
Posted on April 1, 2023 (Last modified on May 20, 2023 )
3 minutes • 494 words
Introduction
In this tutorial we learn how to install libfreemarker-java on Ubuntu.
What is libfreemarker-java
libfreemarker-java is:
FreeMarker is a “template engine”; a generic tool to generate text output (anything from HTML to autogenerated source code) based on templates. It’s a Java package, a class library for Java programmers. It’s not an application for end-users in itself, but something that programmers can embed into their products.
FreeMarker is designed to be practical for the generation of HTML Web pages, particularly by servlet-based applications following the MVC (Model View Controller) pattern. The idea behind using the MVC pattern for dynamic Web pages is that you separate the designers (HTML authors) from the programmers. Everybody works on what they are good at. Designers can change the appearance of a page without programmers having to change or recompile code, because the application logic (Java programs) and page design (FreeMarker templates) are separated. Templates do not become polluted with complex program fragments. This separation is useful even for projects where the programmer and the HMTL page author is the same person, since it helps to keep the application clear and easily maintainable.
There are three methods to install libfreemarker-java on Ubuntu. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install libfreemarker-java Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install libfreemarker-java using apt-get by running the following command:
sudo apt-get -y install libfreemarker-java
Install libfreemarker-java Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install libfreemarker-java using apt by running the following command:
sudo apt -y install libfreemarker-java
Install libfreemarker-java Using aptitude
If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Ubuntu. Update apt database with aptitude using the following command.
sudo aptitude update
After updating apt database, We can install libfreemarker-java using aptitude by running the following command:
sudo aptitude -y install libfreemarker-java
How To Uninstall libfreemarker-java on Ubuntu
To uninstall only the libfreemarker-java package we can use the following command:
sudo apt-get remove libfreemarker-java
Uninstall libfreemarker-java And Its Dependencies
To uninstall libfreemarker-java and its dependencies that are no longer needed by Ubuntu, we can use the command below:
sudo apt-get -y autoremove libfreemarker-java
Remove libfreemarker-java Configurations and Data
To remove libfreemarker-java configuration and data from Ubuntu we can use the following command:
sudo apt-get -y purge libfreemarker-java
Remove libfreemarker-java configuration, data, and all of its dependencies
We can use the following command to remove libfreemarker-java configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge libfreemarker-java
Dependencies
libfreemarker-java have the following dependencies:
References
Summary
In this tutorial we learn how to install libfreemarker-java package on Ubuntu using different package management tools: apt, apt-get and aptitude.