I am getting a

The import cannot be resolved

error for the following imports,

import org.springframework.mail.MailSender;
import org.springframework.mail.SimpleMailMessage;

I have the following libraries in the classpath, but I not sure which jar file has the above-mentioned imports. Does anybody have any idea?

     org.springframework.aop-3.1.1.RELEASE.jar
     org.springframework.asm-3.1.1.RELEASE.jar
     org.springframework.beans-3.1.1.RELEASE.jar
     org.springframework.context-3.1.1.RELEASE.jar
     org.springframework.core-3.1.1.RELEASE.jar
     org.springframework.expression-3.1.1.RELEASE.jar
     org.springframework.jdbc-3.1.1.RELEASE.jar
     org.springframework.orm-3.1.1.RELEASE.jar
     org.springframework.web-3.1.1.RELEASE.jar
java spring
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