Error: No JDK found on PATH, Please correct the SetJavaHome directive or add the directive

If you have seen the following error while trying to execute Oracle SQL Developer:

Error: No JDK found on PATH
Please correct the SetJavaHome directive or add the directive
in /home/barenca/bin/sqldeveloper/sqldeveloper/bin/sqldeveloper.conf or
sqldeveloper-Linux.conf
to point to the JDK installation.

You just need to indicate the J2SDK path in the file sqldeveloper/bin/sqldeveloper.conf and that's it!.

Edit the file ./sqldeveloper/bin/sqldeveloper.conf and add the path of your j2sdk installation (in Linux/unix which java and then follow the symbolic links):

SetJavaHome /usr/lib/jvm/java-6-sun

And that's it!, enjoy it.