I went to the Software Center and installled Eclipse. However, I need the Android Developer Tools version. Is there any way I can get that without having to download the whole package (i.e. Eclipse + ADT) all over again?
The new IDE is built on IntelliJ IDEA Community Edition, the popular Java IDE by JetBrains.
Or, if you really need Eclipse, install the Eclipse ADT plugin
As @A.B said, do not forget that Eclipse is not supported anymore.
For people that really need to use Eclipse you can easily install it using Canonical
Installing Ubuntu Make :
For Ubuntu 14.04, 14.10 users :
For Ubuntu 15.04 and up :
Ubuntu make is already in official repositories, run :
Installing Eclipse :
Uninstall Eclipse :