How to Install Oracle-Sun JDK 7 on Debian Stretch

Oracle JDK 7 Quick Start for Debian Stretch 9

Hi! The Tutorial shows you in Easy-Steps How to Install and Getting-Started with the Oracle-Sun Official Java SE JDK 7 for Debian Stretch 9 GNU/Linux i386/amd64 Desktop/Server.

To SetUp Oracle JDK you will need to Use the update-alternatives Tool to Update your System Java to Oracle JDK 7.

To the How to Download and Install Oracle JDK 8+ on Debian Stretch 9 Bottom there is a Link for Quick Start with Java JDK 7 Development and also to Install the Latest Java IDEs for Debian Stretch 9 Linux.

The Contents and Details of How to Download and Install Oracle JDK 8+ on Debian Stretch 9 are Expressly Essentials to Give Focus Only to the Essentials Instructions and Commands and Make the Tut Easier to Understand ;)

1. Open a Shell Terminal emulator window
   (Press “Enter” to Execute Commands)

   

2. Download Oracle Java SE JDK 7 for Linux

   JDK 7 Linux 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

   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:

   chown -R root:root /tmp/jdk1.7*

   Then to Switch 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
   

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

   exit

6. 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

7. Testing New Java JDK 7 Installation Installation:

   java -version

8. Getting-Started with Java Development

   Getting-Started Quickly with JDK

   How-to
   Getting-Started Quickly with Java JDK Development

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

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