I'm using Eclipse Neon 3.6.3 and I have a Java EJB project where I try to use Json-Objects to evaluate the response from a REST-Service. I've imported JSONObject:
import org.json.JSONObject;
And added
json-20160810.jar
to the Build Path. After I deployed it on a Glassfish-Server (3.1.2) I get the following Error:
Caused by: java.lang.NoClassDefFoundError: org/json/JSONObject
You probably can solve the problem by putting the JAR into the folder /glassfish3/glassfish/lib and restarting Glassfish.
A second solution would be to include the JAR in a WAR or EAR file for deployment. There are plenty of tutorials for that on the net, but I'm not sure what you need exactly for Eclipse.