Unable to understand what jdk location is

Question

I have java installed correctly for sure.

aaa@ubuntu:~$ whereis java
java: /usr/bin/java /usr/bin/X11/java /usr/local/java /usr/share/java
aaa@ubuntu:~$ whereis javac
javac: /usr/bin/javac /usr/bin/X11/javac

But when I'm trying to add the location of /usr/bin/java in IntellyJ Idea12 as a java project sdk, I can't do that because it requires the folder and /usr/bin/java is a file. Even if I specify /usr/bin, it says that it's not a valid location.

So where is it located and how do I setup a location to be a java sdk for IntellyJ Idea12 or for Eclipse?

UPDATE: The path "/usr/lib/jvm/" doesn't exist

UPDATE2:

I used this tutorial http://www.wikihow.com/Install-Oracle-Java-on-Ubuntu-Linux

Solution

All ubuntu JRE and JDK installs gets stored in /usr/lib/jvm/.

You need to add the multi-arch specific JDK location to Idea12. For example, on 32-bit x86 Ubuntu installations, use /usr/lib/jvm/java-7-openjdk-i386.

Comments

[Admin]

How did you install jdk, using update-alternatives might help you.

[Alex Malex]

The path " /usr/lib/jvm/" doesn't exist.

[Alex Malex]

didn't I install it? Look at my update2

[Magno C]

Thanks. I just ls -lh /usr/lib/jvm/ and discover wich Java. Expected default-javabut found java-7-oracle. Solved.