Setup oracle java 7 on Ubuntu 14.04

I wanted to try oracle jdk vs openjdk performance for the DartEditor

    http://www.oracle.com/technetwork/java/javase/downloads/index.html
I chose

    jdk-7u71-linux-x64.tar.gz
that I extracted to

    /opt/apps/jdk1.7.0_71



Then comes the configuration:




# One time setup

# local var
$ LOCAL_JAVA_TOP=/opt/apps/jdk1.7.0_71

# setup
sudo update-alternatives --install /usr/bin/java java $LOCAL_JAVA_TOP/bin/java 110
sudo update-alternatives --install /usr/bin/javac javac $LOCAL_JAVA_TOP/bin/javac 110



Then to change configuration:






# To change configuration between openjdk / oracle
sudo update-alternatives --config java
sudo update-alternatives --config javac




At first, Oracle looks slightly slower in a simple test where I started exited the editor with a complex project. However the overall experience looks slightly faster...to be completed after some days of usage...



















































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