How to Install Oracle JDK 8 on CrunchBang Linux 11/10/9 Easy Guide

Getting-Started with Java 8 Development on CrunchBang Linux

The Guide shows you in Easy-Steps How to Install Oracle-Sun Java SE JDK 8 i586/x8664 for CrunchBang Linux 9/10/11 Desktop/Server.

After Installing in you may need to make use of the update-alternatives Tool to Update your System Java.

Some Java 8 Features:

• LAMBDA Expressions Programming
• The Stream API
• The Nashorn Javascript Engine

To the How to Download and Install Oracle JDK 8 in CrunchBang Linux Bottom there is a Link for Quick Start with Java JDK 8 Development and also to Install the Java Web-Server Tomcat 7 for CrunchBang Linux.

Moreover, to Make the Process Easier to Visualize the Post Includes the Basic Screenshots of the Steps Involved.

The Contents and Details of How to Download and Install Oracle JDK 8 in CrunchBang Linux are Expressly Minimal to Give Focus Only to the Essentials Instructions and Commands and Make the Tut Easier to Understand ;)

1. Download Oracle Java SE JDK8 for Linux.

   Oracle JDK8 i586/x8664 tar.gz

   Oracle Jdk8

2. Double-Click on the JDK8 tar.gz Archive and Extract into
   /tmp.

   
   Or from Shell:

   tar xvfz ~/Downloads/jdk-8*.tar.gz -C /tmp/

3. Open a Terminal Window
   (Press “Enter” to Execute Commands).

   Right-Click on Desktop > Terminal.

   Or

   Cmd+t.

4. Relocate Oracle JDK 8

   sudo su

   If Got “User is Not in Sudoers file” then see: How to Enable sudo
   Make a jvm Directory if Not already there with

   if [ ! -d "/usr/lib/jvm" ]; then mkdir /usr/lib/jvm; fi

   Set the root superUser as owner

   sudo chown -R root:root /tmp/jdk1.8*

   Reiterate the Execution Permission over the Java binaries

   chmod -R +x /tmp/jdk1.8*/bin

   Finally, Shift the Java contents with

   mv /tmp/jdk1.8* /usr/lib/jvm/
   

5. Update System Java to Oracle JDK8.

   update-alternatives --install /usr/bin/java java /usr/lib/jvm/jdk1.8*/bin/java 1065
   

   update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/jdk1.8*/bin/javac 1065
   

   update-alternatives --install /usr/bin/jar jar /usr/lib/jvm/jdk1.8*/bin/jar 1065
   

   update-alternatives --install /usr/bin/javaws javaws /usr/lib/jvm/jdk1.8*/bin/javaws 1065
   

   Checking or Setting the System Java Version in Use with

   update-alternatives --config java
   

   To Switch of Java Version Just Enter the Selection Number on First, Column. :)

   Lastly to Exit from the Super-User session:

   exit

6. Setting JAVA_HOME User Environment Variable (Optional).

   su [myUserName]

   Or simply:

   exit

   su [myUserName]

   Or simply:

   exit

   And Edit the Bash environment Configuration file

   nano $HOME/.bashrc

   Append:

   export JAVA_HOME=/usr/lib/jvm/jdk1.8[uX]

   Replace the [uX] Looking for the Installed Java 8 Version with:

   ls /usr/lib/jvm/

   Ctr+x to Save & Exit from nano Editor :)
   Load New Bash Config:

   bash

7. Test New Java JDK 8 Installation.

   java -version

8. How to Install Eclipse Java on CrunchBang

   Eclipse Java IDE Install

   Install Eclipse for Java

Now Thanks to Oracle-Sun Corporation you are able to Successfully Start Up with Java 8 Development.

Welcome to Java 8 Challenge! ;)

Install IntelliJ IDEA for Java & Android on CrunchBang

Installing IntelliJ on CrunchBang
Setup IntelliJ on Debian