How to Install Oracle JDK 7 on Ubuntu 17.10 Artful

February 22, 2018 | By the+gnu+linux+evangelist.

Oracle JDK 7 Install Ubuntu 17.10 Artful

Hi! The Tutorial shows you Step-by-Step How to Install Oracle-Sun Java SE JDK 7 for Ubuntu 17.10 Artful GNU/Linux Desktop/Server.

And the Oracle Java JDK 7 for Ubuntu Artful includes Tools useful for developing and testing Programs written in the Java programming language and running on the Java platform.

Moreover, included inside this guide you find instructions on How to Getting-Started with Java JDK 7 Development on Ubuntu and Install Eclipse Java IDE.

Especially relevant: to SetUp Oracle JDK 7 on Ubuntu you will need to Use the update-alternatives Tool to Update your System Java to Oracle JDK 1.7.

Finally, the Contents and Details of How to Download and Install Oracle JDK 8+ on Ubuntu 17.10 Artful are Expressly Essentials to Give Focus Only to the Essentials Instructions and Commands and Make the Tut Easier to Understand ;)

Install Oracle JDK 7 on Ubuntu 17.10 Artful - Featured

First, Open a Terminal Shell emulator window
Ctrl+Alt+t on Desktop
(Press “Enter” to Execute Commands)

Download Oracle Java SE JDK for Linux.

Oracle JDK i586/x8664 tar.gz

Select Oracle JDK 7 for Linux

Then Double-Click on Archive and Extract into /tmp
Or from Shell:
```
tar xvzf ~/Downloads/jdk-7*.tar.gz -C /tmp/
```
Next Relocate Oracle JDK 7 Contents
Login as the SuperUser:
```
sudo su
```
If Got “User is Not in Sudoers file” then see: How to Enable sudo
To Make a jvm Directory Only if Not already there
(You can directly copy & paste the commands into the terminal)
```
if [ ! -d "/usr/lib/jvm" ]; then mkdir /usr/lib/jvm; fi
```
Set the root superUser as owner
```
sudo chown -R root:root /tmp/jdk1.7*
```
Then to shift the Oracle JDK 7 contents
```
mv /tmp/jdk1.7* /usr/lib/jvm/
```

Installing Oracle Java JDK 7

update-alternatives --install /usr/bin/java java /usr/lib/jvm/jdk1.7*/bin/java 1065

update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/jdk1.7*/bin/javac 1065

update-alternatives --install /usr/bin/jar jar /usr/lib/jvm/jdk1.7*/bin/jar 1065

update-alternatives --install /usr/bin/javaws javaws /usr/lib/jvm/jdk1.7*/bin/javaws 1065

Checking or Setting the System Java Version in Use
with

update-alternatives --config java

And for the Java Compiler instead:

sudo update-alternatives --config javac

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

exit

Setting JAVA_HOME User Environment Variable (Optional).

Edit the Bash environment Configuration file:
```
nano $HOME/.bashrc
```
Append:
```
export JAVA_HOME=/usr/lib/jvm/jdk1.7[uX]
```
Replace the [uX] Looking for the Installed Java 7 Version with:
```
ls /usr/lib/jvm/
```
Ctr+x to Save & Exit from nano Editor :)
Next to Load the New Bash Environment:
```
bash
```
Testing the JDK 7 Installation:
```
java -version
```
Getting-Started with Java Development.

Oracle Java Dev Getting-Started Guide

How-to
Getting-Started Quickly with Java JDK Development

How to Install Eclipse for Java Developers on Ubuntu:
The Linked Guide Includes Tutorials for Installing Latest Eclipse Java on Ubuntu.

Now Thanks to Oracle-Sun Corporation you are able to Successfully Start with Java JDK Use & Development.