java.lang.NoClassDefFoundError: org/apache/http/conn/scheme/SchemeSocketFactory

Question

I am tring to send mail by AWSCredentials but getting an exception

java.lang.NoClassDefFoundError: org/apache/http/conn/scheme/SchemeSocketFactory

Answer 1

From the javadocs, the SchemeSocketFactory class is only available since version 4.1. So this might have something to do with the fact that you are using the 4.0 alpha jars. Try upgrading your http-client library to 4.1 or higher.