In order to use Eclipse in linux plataform, we need to download Java JDK, from Oracle website:
(download your version x64, x86)
After download install the package of Java JDK, and then download Eclipse from:
Select the link “DOWNLOAD” and wait until the download
When the download finished extract the folder and open it.
There will be eclipse executable, double click and work!
GEANY
As a second option I recommend you to install Geany an easy IDLE in case you feel Eclipse is too much for you (I use it because it’s easy and faster for tiny programs)
If you want to download, you might look inside Ubuntu Software Center and download from it.
JAVALIO 