How to Install Oracle JDK 8 on Debian Jessie 8 Easy Guide

April 29, 2018 | By the+gnu+linux+evangelist.

Oracle JDK 8 on Debian Jessie 8 Installation Guide

Hi! This tutorial will guide you step-by-step on How to Install Oracle-Sun Java SE JDK 8 in Debian Jessie 8 GNU/Linux 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 Debian Jessie 8 Bottom there is a Link for Quick Start with Java JDK 8 Development and also to Install the Java Web-Server Tomcat 8 for Debian.

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

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

Install Oracle JDK 8 on Debian Jessie 8 - Featured

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

In case first see: Terminal QuickStart Guide.
Or Login into Shell :)
Download Oracle Java SE JDK8 for Linux.

Oracle JDK8 i586/x8664 tar.gz

Oracle Jdk8
Double-Click on the JDK8 tar.gz Archive and Extract into
/tmp.

Or from Shell:
```
tar xvfz ~/Downloads/jdk-8*.tar.gz -C /tmp/
```
Relocate Oracle JDK 8
```
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/
```

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

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
```
Test New Java JDK 8 Installation.
```
java -version
```
How to Install Eclipse Java on Debian

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 Linux Debian
Setup IntelliJ on Debian.