I am using following version of eclipse.
and it gives me compile time error that - the import org.apache.commons.lang.builder.ToStringBuilder not resolved.
Eclipse
Java EE
IDE for Web Developers.
Version: Indigo Release
Build id: 20110615-0604
(c) Copyright Eclipse contributors and others 2005, 2011.
I am not very much aware of using eclipse.please help me.