How To Install gcj-jre-headless on Debian 9
Introduction
In this tutorial we learn how to install gcj-jre-headless on Debian 9.
What is gcj-jre-headless
gcj-jre-headless is:
GIJ is a Java bytecode interpreter, not limited to interpreting bytecode. It includes a class loader which can dynamically load shared objects, so it is possible to give it the name of a class which has been compiled and put into a shared library on the class path.
The package contains as well a collection of wrapper scripts and symlinks. It is meant to provide a Java-RTE-like interface to the GIJ/GCJ tool set, limited to the headless tools and libraries.
There are three methods to install gcj-jre-headless on Debian 9. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install gcj-jre-headless Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install gcj-jre-headless using apt-get by running the following command:
sudo apt-get -y install gcj-jre-headless
Install gcj-jre-headless Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install gcj-jre-headless using apt by running the following command:
sudo apt -y install gcj-jre-headless
Install gcj-jre-headless 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 Debian. Update apt database with aptitude using the following command.
sudo aptitude update
After updating apt database, We can install gcj-jre-headless using aptitude by running the following command:
sudo aptitude -y install gcj-jre-headless
How To Uninstall gcj-jre-headless on Debian 9
To uninstall only the gcj-jre-headless package we can use the following command:
sudo apt-get remove gcj-jre-headless
Uninstall gcj-jre-headless And Its Dependencies
To uninstall gcj-jre-headless and its dependencies that are no longer needed by Debian 9, we can use the command below:
sudo apt-get -y autoremove gcj-jre-headless
Remove gcj-jre-headless Configurations and Data
To remove gcj-jre-headless configuration and data from Debian 9 we can use the following command:
sudo apt-get -y purge gcj-jre-headless
Remove gcj-jre-headless configuration, data, and all of its dependencies
We can use the following command to remove gcj-jre-headless configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge gcj-jre-headless
Dependencies
gcj-jre-headless have the following dependencies:
References
Summary
In this tutorial we learn how to install gcj-jre-headless package on Debian 9 using different package management tools: apt, apt-get and aptitude.