How-to Install Custom Oracle-Sun Java JDK 7 x64 on Linux Gentoo 2012 64bit Easy Visual-Guide

The Guide Show Step-by-Step How-to Install the Latest Oracle-Sun Official Java SE JDK 7 x64 on Linux Gentoo 2012 KDE4 x86_64 Desktop.

The Process is a Little Beat Tedious and Intricate but it Simply Give you the Freedom to Know How-to Choose Freely which JDK7 to Install.)

To Make the Entire Process Easier to Visualize and Retain the Article Includes the Basic Screenshots of the Essentials Steps Involved.

The Content and Details are Expressly Reduced to Give Focus Only to the Essentials Instructions and Commands and Make Tut more Easy & Digestive;)

1. Download Oracle-Sun Java SE JDK 7:

   JDK 7 x64.tar.gz

   On the JDK 7 Section Select the x64.tar.gz Release.
2. Extract JDK 7 tar.gz Archive

   mv </path/To>/jdk*tar.gz /tmp

   tar xvzf </path/To>/jdk*tar.gz

3. Open a Terminal Window

   How-to Easy&Quick Installing Gentoo 12 KDE4 from Live DVD:

   Gentoo 12 KDE4 Quick-Installation

   Link Contains Guide on Installing Easily and Step-by-Step the KDE4 Desktop from Live DVD.
4. Relocate Java JDK7

   sudo su

   mv /tmp/jdk1.7.* /opt

5. Making an Oracle JDK7 Installation Config File

   Just Substitute to the X the Correspondent Java Update Version.

   nano /usr/share/java-config-2/vm/oracle-sun-jdk7u<X>

   Now you can simply Just Copy, Paste and Substitute the Right Values in Sections Between "<>"

   VERSION="Oracle-Sun JDK 7u<X>"
   JAVA_HOME="/opt/<jdk1.7.0_0X>"
   JDK_HOME="/opt/<jdk1.7.0_0X>"
   JAVAC="${JAVA_HOME}/bin/javac"
   PATH="${JAVA_HOME}/bin:${JAVA_HOME}/jre/bin"
   ROOTPATH="${JAVA_HOME}/bin:${JAVA_HOME}/jre/bin"
   LDPATH="${JAVA_HOME}/jre/lib/amd64/:${JAVA_HOME}/jre/lib/amd64/native_threads/:${JAVA_HOME}/jre/lib/amd64/xawt/:${JAVA_HOME}/jre/lib/amd64/server/"
   MANPATH="/opt/icedtea-bin-7.2.2.1/man"
   PROVIDES_TYPE="JDK JRE"
   PROVIDES_VERSION="1.7"
   # Taken from sun.boot.class.path property
   BOOTCLASSPATH="${JAVA_HOME}/jre/lib/resources.jar:${JAVA_HOME}/jre/lib/rt.jar:${JAVA_HOME}/jre/lib/jsse.jar:${JAVA_HOME}/jre/lib/jce.jar:${JAVA_HOME}/jre/lib/charsets.jar"
   GENERATION="2"
   ENV_VARS="JAVA_HOME JDK_HOME JAVAC PATH ROOTPATH LDPATH MANPATH"
   VMHANDLE="oracle-jdk7"
   BUILD_ONLY="FALSE"
   

   Ctrl+x to Save and Exit

6. Updating the System to Custom Oracle Sun JDK 7

   Make a Symlink

   ln -s /opt/jdk1.7.0_0X/ /usr/lib/jvm/oracle-sun-jdk7uX

   Find the New Oracle Java SE JDK 7 Installation

   java-config -L

   Switch System Java to the New Manually Installed Oracle JDK 7

   java-config --set-system-vm oracle-sun-jdk7uX

   Test New Oracle JDK 7 Installation

   java -version

7. Getting-Started and Running with JDK 7:

   Quick Getting-Started Tutorial for JDK 7 Development

   Contains the How-to Quick Getting-Started and Running with Java JDK 7 Development