Install Oracle JDK 7 on LXLE 12.04 LTS
The Guide shows you in Step-by-Step How to Install and Getting-Started with the Oracle-Sun Official Java SE JDK 7 for LXLE 12.04 LTS Salamander 32/64-bit Linux Desktop.
To SetUp Oracle JDK you will need to Use the update-alternatives Tool to Update your System Java to 1.7 JDK.
To the How to Download and Install Oracle JDK 8+ on LXLE 12.04 LTS Bottom there is a Link for Quick Start with Java JDK 7 Development and also to Install Eclipse IDE for Java Development on LXLE Linux.
Moreover, to Make the Process Easier to Visualize the Post Includes the Basic Screenshots of the Steps Involved.
The Contents and Details of How to Download and Install Oracle JDK 8+ on LXLE 12.04 are Expressly Essentials to Give Focus Only to the Essentials Instructions and Commands and Make the Tut Easier to Understand ;)
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Download Oracle Java SE JDK for Linux:
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Double-Click on the tar.gz Archive and Extract into /tmp
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Open a Command Line Terminal Window
(Press “Enter” to Execute Commands).Ctrl+Alt+T
In case first see: Terminal QuickStart Guide.
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Relocate JDK 7
sudo su
If Got “User is Not in Sudoers file” then see: How to Enable sudo
To Make a jvm Directory Only if Not already there
(You can directly copy & paste the commands into the terminal)if [ ! -d "/usr/lib/jvm" ]; then mkdir /usr/lib/jvm; fi
sudo chown -R root:root /tmp/jdk1.7*
Then to shift the Oracle JDK 7 contents
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
withupdate-alternatives --config java
To Switch of Java Version Just Enter the Selection Number/non First, Column. :)
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Getting-Started.
Now Thanks to Oracle-Sun Corporation
you are able to Successfully Start with Java JDK Use & Development.
How to Install Eclipse for Java SE on LXLE