Android update 17 seems incompatible with external Jars

Question

I just allowed my Mac to do an update on its Java installation and now some of my old jars (like javax.mail and apache.commons.httpclient) are thro

Answer 1

crash at run time with exceptions that look like this: Could not find class 'javax.mail.internet.InternetAddress', referenced from method com.my.project.Main.isValidEmailAddress

If you have problems with external jars, then:

1. create a folder named libs.
2. Copy and paste all needed external jar files into that folder.

It will automatically be included, as explained on this page: Dealing with dependencies in Android projects