Select my Java

There are many varients of Java available on Ubuntu. There are OpenJDK and Sun's own JDK. By default, Ubuntu would use the open source one which is OpenJDK. Although it works, it isn't working as well as Sun's own. After a bit of research I found this little command that would save the default Java withe ease

update-alternatives --config java

This command would show you available varients of the command configuring, and let you choose the one you desired.