Verify the version of Eclipse that it is using. Go to menu Help
→ About Apatana... -> Click on the Eclipse icon, the version to
take into account is the one for feature 'Eclipse plataform'.
Make sure the update site for your version of Eclipse exists in
the Available software sites.
- First find the update site that corresponds to your version of
Eclipse; for instance, if you have Eclipse plataform version 3.7
(also known as Indigo) the update site would be http://download.eclipse.org/releases/indigo/ (make
sure you have the correct URL).
- Then go to menu Window → Preferences, then choose
Install/Update → Available Software sites. There you should have an
entry for Eclipse and the location should be the update site from
the previous step; if it doesn't exist just add it with the
Install 'Eclipse Java development tools'. Go to menu Help →
'Install new software...'. Select your Eclipse update site, from
the drop down list. A list of available updates/features will be
shown. Look for Java (using the filter field) or navigate to
'Programming languages'; in either case, check the box for 'Eclipse
Java development tools', click next and follow any additional steps
until installation is done.
Configure preferences for Java in Aptana. Go to menu Window →
Preferences, in the left pane you should now see an item called
'Java'. The subitem 'Installed JREs', should have at least one
entry (this is the version of JRE that will be used during
development. It is possible to add more JREs there (Not going into
the detail here, as it is not really the question to be