no such provider exception occurs

See more:

Java

I do not know what to provide for server name and smtp server name for the program i tried from the link as follows:
http://www.java-tips.org/java-se-tips/javax.swing/how-to-create-an-e-mail-client-in-java.html.

such exception occurs wgen i provide the following:
server:pop.gmail.com or imap.gmail.com
smtp server:smtp.gmail.com.

kindly help me regarding the same. its an emergency.