javax.activation.UnsupportedDataTypeException: no object DCH for MIME type multipart/mixed; boundary

Question

Currently I\'m inline of writing a code that will be listening to a directory. when the directory is updated with .apk file, I\'ll send a mail with this .apk file to a gmail

Answer 1

Adding the current thread before sending the email is the solution:

Thread.currentThread().setContextClassLoader( getClass().getClassLoader() );