The Jar of this class file belongs to container 'Android Dependencies' which does not allow modifications to source attachments on its entries
android, dependencies, jakarta-mail
Solution
Seems to be something they intentionally broke in ADT r17. See http://code.google.com/p/android/issues/detail?id=27490#c6.
Problem
I am making an email application which is giving the error in this question's title. How can I fix this problem? I am giving my codes screenshot if it is helps to find solution.