How to add JAR libraries to WAR project without facing java.lang.ClassNotFoundException? Classpath vs Build Path vs /WEB-INF/lib

Question

How should I add JAR libraries to a WAR project in Eclipse without facing java.lang.ClassNotFoundException or java.lang.NoClassDefFoundError?

Answer 1

If you are using Maven:

Open the project properties, and under Deployment Assembly click Add...

Then select Java Build Path Entries and select Maven Dependencies