Some function parameters named arg0, arg1, etc... after compiling a JAR library

Some function parameters named arg0, arg1, etc... after compiling a JAR
library

I'm compiling a library using the Ant command:
ant clean release -Dversion.code=1 -Dverbose=true -Ddebug=true
-Ddebuglevel="vars"
Given this, For some reason, part of the methods lose their parameter
names while others keep their parameter names. i.e.:
Func a(String specificName1) turns into a(String arg0)
while
Func b(String specifcName2) turns into b(String specificName2)
The functions that don't keep their param. names belong to an internal
interface in the library compiled.



I'm working on an Android library with Eclipse IDE.
P.S., Opening the jar with ClassView-GUI shows the all parameters keep
their names.