After downloading aptana en extracting it in my home folder I run it like so
./AptanaStudio3
After that i get a box saying
A Java Runtime Environment (JRE) or Java Development Kit (JDK)
must be available in order to run Aptana Studio 3. No Java virtual machine
was found after searching the following locations:
/home/****/.Aptana_Studio_3/jre/bin/java
java in your current PATH
I have never installed java on my ubuntu machines. i am currently running 12.10