When i try to import com.google.appengine.repackaged.org.json.JSONObject; into my project it show an error “Use of com.google.appengine.repackaged may result in your app breaking without warning”. I try to use org.apache.commons.codec.binary.Base64 but i got another error. “SONObject cannot be resolved to a type”. I also tried import com.google.appengine.repackaged.com.google.common.util.Base64; i get the same error as the first one. “Use of com.google.appengine.repackaged may result in your app breaking without warning”. Please help. Thanks.

Go with the
JSON*.jar and some more jar files have locations changed now. You need to re-link them
1. classpath
2. Java Build Path-> Libraries in Eclipse