Fix for Exception in thread "main" java.lang.NoClassDefFoundError: org/json/JSONException

Problem:
Fix for Exception in thread "main" java.lang.NoClassDefFoundError: org/json/JSONException in eclipse IDE

Cause:
json jar not found in the class path

Fix:
Download json jar
www.java2s.com/Code/Jar/j/Downloadjavajsonjar.htm

Select project->Build path->Add external jar->add the jar->clean and build the project