Problems building jain-sip-applet-phone

Hi

I'm building jain-sip-applet-phone but i'm obtain this error messages:

[javac] Compiling 61 source files
to /home/anton/descargas/softphones/jain-sip-applet-phone/jain-sip-applet-phone/classes    [javac] /home/anton/descargas/softphones/jain-sip-applet-phone/jain-sip-applet-phone/src/gov/nist/applet/phone/media/MediaManager.java:78: exception javax.sdp.SdpException is never thrown in body of corresponding try statement
    [javac]             } catch (SdpException se) {
    [javac]                   ^

[javac] /home/anton/descargas/softphones/jain-sip-applet-phone/jain-sip-applet-phone/src/gov/nist/applet/phone/ua/MessageListener.java:40: gov.nist.applet.phone.ua.MessageListener is not abstract and does not override abstract method processDialogTerminated(javax.sip.DialogTerminatedEvent) in javax.sip.SipListener
    [javac] public class MessageListener implements
javax.sip.SipListener {
    [javac]        ^

[javac] /home/anton/descargas/softphones/jain-sip-applet-phone/jain-sip-applet-phone/src/gov/nist/applet/phone/ua/router/MessengerRouter.java:32: gov.nist.applet.phone.ua.router.MessengerRouter is not abstract and does not override abstract method getNextHop(javax.sip.message.Request) in javax.sip.address.Router
    [javac] public class MessengerRouter implements Router {
    [javac]        ^

Maybe some bugs?

Regards