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.
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Download Oracle Java SE JDK:
Oracle JDK i586.tar.gz -
Double-Click on the Archive and Extract into /tmp
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Open Terminal Window
(Press “Enter” to Execute Commands)
In case first see: Terminal QuickStart Guide.
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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/
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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. :)
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Getting-Started:
Guides to Installing the Tomcat 7 Server on Linux Kubuntu: