Java Service Error

Hi,

I am creating a Java Service, but when i save it, i get a error

"C:\sapbc46\Server\packages\Eficentrum_PCP\code\source\Des\JService\Encriptacion.java:1: package Des.JService clashes with class of same name
package Des.JService; "

I don’t understand why !!!
What can i do ???

Thanks so much …
Omar