Oracle Java JDK7 How to Install and Getting Started on Linux Debian 7 Wheezy I386 KDE4 Easy Visual-Guide

Hi! The Tutorial shows you Step-by-Step How to Install and Getting-Started with the Oracle-Sun Official Java SE JDK i586 for Debian 7 Wheezy KDE4 32-bit Desktop.

After Installing you will need to Use the update-alternatives Command Tool to Update your System Java to Oracle Java 1.7 JDK.

To the Article Bottom there is a Link for Quick Start with Java JDK 7 Development and also to Install the Java Web-Server Tomcat 7 for Debian.

And this Visual Guide includes the Basic Screenshots of All GUI Steps involved.

The Content give Focus Only to the Essentials Instructions and Commands to make it Easier to Follow.

1. Download Oracel-Sun Java SE JDK:

   Oracle JDK i586 tar.gz
   On the Oracle Java SE JDK Section Select the i586 tar.gz Release

2. Find and Double-Click on the tar.gz Archive

   Extract it Into the /tmp Folder.

   

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

4. Relocate JDK 7

   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. 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 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 Debian Linux: