How To Install openjdk-11-jre-dcevm on Ubuntu 18.04
Introduction
In this tutorial we learn how to install openjdk-11-jre-dcevm on Ubuntu 18.04.
What is openjdk-11-jre-dcevm
openjdk-11-jre-dcevm is:
The Dynamic Code Evolution Virtual Machine (DCE VM) is a modification of the Java HotSpot VM that allows unlimited redefinition of loaded classes at runtime. The current hotswapping mechanism of the HotSpot VM allows only changing method bodies. This enhanced VM allows adding and removing fields and methods as well as changes to the super types of a class.
This alternative VM is enabled by adding the -dcevm option when invoking the java command.
There are three methods to install openjdk-11-jre-dcevm on Ubuntu 18.04. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install openjdk-11-jre-dcevm Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install openjdk-11-jre-dcevm using apt-get by running the following command:
sudo apt-get -y install openjdk-11-jre-dcevm
Install openjdk-11-jre-dcevm Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install openjdk-11-jre-dcevm using apt by running the following command:
sudo apt -y install openjdk-11-jre-dcevm
Install openjdk-11-jre-dcevm 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 openjdk-11-jre-dcevm using aptitude by running the following command:
sudo aptitude -y install openjdk-11-jre-dcevm
How To Uninstall openjdk-11-jre-dcevm on Ubuntu 18.04
To uninstall only the openjdk-11-jre-dcevm package we can use the following command:
sudo apt-get remove openjdk-11-jre-dcevm
Uninstall openjdk-11-jre-dcevm And Its Dependencies
To uninstall openjdk-11-jre-dcevm and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:
sudo apt-get -y autoremove openjdk-11-jre-dcevm
Remove openjdk-11-jre-dcevm Configurations and Data
To remove openjdk-11-jre-dcevm configuration and data from Ubuntu 18.04 we can use the following command:
sudo apt-get -y purge openjdk-11-jre-dcevm
Remove openjdk-11-jre-dcevm configuration, data, and all of its dependencies
We can use the following command to remove openjdk-11-jre-dcevm configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge openjdk-11-jre-dcevm
References
Summary
In this tutorial we learn how to install openjdk-11-jre-dcevm package on Ubuntu 18.04 using different package management tools: apt, apt-get and aptitude.
