If you installed dev-util/eclipse-sdk-bin-4.3, you might find that the menu item to run 'Eclipse 4.3 (bin)' does not work.
You may ask yourself, why does /opt/eclipse-sdk-bin-4.3/eclipse run from a terminal window?
You may find yourself a file: /usr/share/applications/eclipse-bin-4.3-eclipse-sdk-bin-4.3.desktop.
And you may find yourself in file /usr/bin/eclipse-bin-4.3, and ask yourself, "My God, how did 4.2 get here, twice."
Same as it ever was,
Same as it ever was.
I made a backup copy of /usr/bin/eclipse-bin.4.3 (cp -p eclipse-bin-4.3 eclipse-bin-4.3.orig.bk) and changed 4.2 to 4.3 in two places. I have not notified whoever it is to be notified, except you fine folks.
I am using xfce4. I don't know if it would be the same issue and fix on other desktops, but I am guessing it is a strong possibility.