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NoClassDefFoundError: javax/activation/Datasource

843830Aug 23 2001 — edited Jan 12 2006
I am getting the following error while compiling a demo code in Javamail Api:

Exception in thread "main" java.lang.NoClassDefFoundError: javax/activation/DataSource
at msgsend.<init>(msgsend.java:139)
at msgsend.main(msgsend.java:52)

where can i find the above class ? which jar file should i include in my Classpath?
please help.
Thanx in advance.
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Locked on Feb 9 2006
Added on Aug 23 2001
#javamail
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