Hi! The Tutorial shows you Step-by-Step How to Install and Getting-Started with Oracle-Sun Official Java JDK 7 i586 for Linux Kubuntu 12.04 Precise Pangolin 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 How to Install Java Web-Servers Tomcat 7 for Linux Kubuntu.
And this Visual Guide includes the Basic Screenshots of All GUI Steps involved.
The Contents and Details are Essentials and Give Focus only to Instructions and Commands.
Download Oracle Java SE JDK:
Oracle JDK i586.tar.gzDouble-Click on the Archive and Extract into /tmp
Open Terminal Window
(Press “Enter” to Execute Commands)
In case first see: Terminal QuickStart Guide.
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/
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. :)
Getting-Started:
Guides to Installing the Tomcat 7 Server on Linux Kubuntu: