The Best Way to Install Java JDK and Eclipse IDE on Linux Ubuntu Desktop

In order to install Java on your ubuntu, I assume you are working from home directory cd ~ or cd $HOME which in my case is "/home/omar" or use sudo su - to switch to root user and avoid typing sudo everytime you need root privilege. To start, open a new terminal Ctrl+Alt+T and run the following command:

sudo apt update && sudo apt install openjdk-11-jdk-headless -y

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then run the command below to find JDK installation directory:

update-alternatives --config java

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Afterward, open the startup script file vim ~/.bashrc and add the following lines in the bottom:

	export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64
	export PATH=$JAVA_HOME/bin:$PATH

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then run the following command to activate the new path settings immediately:

source ~/.bashrc

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Now that you have java installed, go to Eclipse IDE download page: https://www.eclipse.org/downloads/download.php?file=/oomph/epp/2020-06/R/eclipse-inst-linux64.tar.gz and download the Eclipse installer archive. Once downloaded, extract the archive content by running the command below:

sudo tar -xvzf eclipse-inst-linux64.tar.gz

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After extracting the installer, open vim ~/eclipse-installer/eclipse-inst.ini file and append the following configuration:

	-vm
	/usr/lib/jvm/java-11-openjdk-amd64/bin/java

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then launch the installer: cd ~/eclipse-installer/ && ./eclipse-inst and choose Eclipse IDE for Enterprise Java Developers. Once you have Eclipse installed, open its configuration file vim ~/eclipse/jee-2020-06/eclipse/eclipse.ini and add the following:

	-vm
	/usr/lib/jvm/java-11-openjdk-amd64/bin/java

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now, create a shortcut for eclipse by creating a new file vim ~/eclipse.desktop and inserting the following content into it:

	[Desktop Entry]
	Name=Eclipse
	Type=Application
	Exec=/home/omar/eclipse/jee-2020-06/eclipse/eclipse
	Terminal=false
	Icon=/home/omar/eclipse/jee-2020-06/eclipse/icon.xpm
	Comment=Integrated Development Environment
	NoDisplay=false
	Categories=Development;IDE;
	Name[en]=Eclipse
	Name[en_US]=Eclipse

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then install the shortcut:

sudo desktop-file-install eclipse.desktop

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That's it, congratulation! from now on you can find your Eclipse among Ubuntu applications.

Bonus: 

 You can also install Lombok utility within eclipse; all you have to do is go to Lombok download page: https://projectlombok.org/download and download the jar. Once the jar downloaded, launch it by running java -jar lombok.jar and specify the eclipse.ini file location /home/omar/eclipse/jee-2020-06/eclipse/eclipse.ini