How to Install Oracle JDK 7 on Deepin

GNU/Linux Deepin Installing Oracle JDK 7 Guide

The Tutorial shows you in Easy-Steps How to Install and Getting-Started with the Oracle-Sun Official Java SE JDK 7 in Deepin GNU/Linux Desktop.

To SetUp Oracle JDK you will need to Use the update-alternatives Tool to Update your System Java to 1.7 JDK.

To the How to Download and Install Oracle JDK 8+ on Deepin Bottom there is a Link for Quick Start with Java JDK 7 Development and also to Install the Latest Eclipse Java IDE for Deepin.

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+ on Deepin are Expressly Essentials to Give Focus Only to the Essentials Instructions and Commands and Make the Tut Easier to Understand ;)

1. Open a Command Line Terminal Shell Emulator
   Ctrl+Alt+t
   (Press “Enter” to Execute Commands)

   

2. Download Oracle Java SE JDK for Linux.

   Oracle JDK i586/x8664 tar.gz

   Select Oracle JDK 7 for Linux

3. Double-Click on Archive and Extract into /tmp
   Or from Shell:

   tar xvzf ~/Downloads/jdk-7*.tar.gz -C /tmp/

   

4. Relocate Oracle JDK 7
   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/
   

5. 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

6. Setting JAVA_HOME User Environment Variable (Optional).

   su [myUserName]

   Or simply:

   exit

   And 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 :)
   Load New Bash Config:

   bash

7. Testing New Java JDK 7 Installation:

   java -version

8. Getting-Started with Java Development.

   Getting-Started Quickly with JDK

   How-to
   Getting-Started Quickly with Java JDK Development

How to Install Eclipse for Java Developers on Deepin

Install Eclipse Java for Deepin
The Linked Guide Includes Tutorials for Installing Latest Eclipse Java on Deepin

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