JUnit: Testcase: initializationError : java.lang.NoClassDefFoundError: org/hamcrest/SelfDescribing

When: Tried to run a JUnit TestCase, I got below error.

Error: JUnit Error.NoClassDefFoundError: org/hamcrest/SelfDescribing

Scenario: I was using Junit.jar 4.0 version

Solution: Use the latest JUnit jar – 4.10.

Reason: Some posts says it as due to the log4j version mismatch b/w what is there in junit jar and the one in Ant jar.

Testcase: initializationError took 0 sec 
Caused an ERROR 
org/hamcrest/SelfDescribing 
java.lang.NoClassDefFoundError: org/hamcrest/SelfDescribing 
    at java.lang.ClassLoader.defineClass1(Native Method) 
    at java.lang.ClassLoader.defineClass(Unknown Source) 
    at java.security.SecureClassLoader.defineClass(Unknown Source) 
    at java.net.URLClassLoader.defineClass(Unknown Source) 
    at java.net.URLClassLoader.access$000(Unknown Source) 
    at java.net.URLClassLoader$1.run(Unknown Source) 
    at java.security.AccessController.doPrivileged(Native Method) 
    at java.net.URLClassLoader.findClass(Unknown Source) 
    at java.lang.ClassLoader.loadClass(Unknown Source) 

Refer: http://stackoverflow.com/questions/1171264/ant-junit-noclassdeffounderror