邮件发送:java.lang.NoClassDefFoundError: com/sun/mail/util/LineInputStream错误如何解决

下面是解决方法:
X:/Program Files/MyEclipse 6.5/myeclipse/eclipse/plugins/com.genuitec.eclipse.j2eedt.core_6.5.0.zmyeclipse650200806/data/libraryset/EE_5 X:/Program Files/MyEclipse 6.5/myecl