How to Install Oracle Java JDK 7 for Linux Fedora 18 KDE4 32bit Desktop Easy Visual-Guide

The Guide shows you Step-by-Step How to Install Oracle-Sun Java JDK 7 32-bit Release for Fedora 18 KDE4 i686 Desktop.

After Installing you will need to Use the update-alternatives Tool to Update your System Java to Sun SE JDK 7.

Especially relevant: at the Same Time I’m also illustrating here How to Install the New Downloaded .rpm Packages with Dependencies on Fedora 18 KDE4 Desktop :)

The Screenshots of Installation Correspond to the Install on a Fedora 18 KDE4 Desktop but the Procedure on GNOME, Xfce, Lxde… Should be Just the Same.

Take the Time of Carefully Reading and Executing the Instructions Contained Here and All should Work Like a Breeze.

1. Download Oracle-Sun Java SE JDK 7:

   Oracle JDK x86.tar.gz
   Oracle Jdk 7 Linux

2. Double-Click on Archive and Extract into /tmp

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

   

   In case first see: Terminal QuickStart Guide.

4. Relocate Oracle Java JDK

   su 

   If Got “User is Not in Sudoers file” then see: How to Enable sudo

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

   The above command is used to create a jvm directory if not already there.

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

   Reiterate the Execution Permission over the Java binaries

   chmod -R +x /tmp/jdk1.7*/bin

   Finally, Shift the Java contents with

   mv /tmp/jdk1.7* /usr/lib/jvm/

5. Updating System Java to Oracle JDK

   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 Reference Number on First, Column. :)

6. Optionally Set Java Environment Variable.

   su <myUser>

   nano $HOME/.bashrc

   Append:

   export JAVA_HOME=/usr/lib/jvm/jdk1.<X.Y_uZ>

   Ctrl+x to Save & Exit from nano :)

   source $HOME/.bashrc

7. How to Install Oracle Java Browser Plug-In:

   Install Oracle Java Firefox PlugIn

   Installing Oracle Java Plugin.

Guides to Installing the Tomcat 7 Server on Linux: