ERROR - Class Not Found Exception - java.lang.ClassNotFoundException

Resolution -

1. Find out the jar file which resides the problematic class. To find that out just do

ctrl + shift + t and type the class name.

You can see the jar name at the bottom "qualifier"section.

2. Check if your class path contains the jar. Add the class path entry if it doesn't have.

3. even then if it doesn't resolve, you will have to find if there is any other classpath ( jar file , start up ) which is overriding the class path entries and fix that.