deleting appointments from outlook calendar

[sony rao]

hi all

i have a java program that sends an email with .vcs file as an attachment for meeting request. When user opens the .vcs file and clicks on save and close button, he can see his outlook calendar blocked for the time slot specified.
Suppose the meeting gets cancelled, user should get a cancelled .vcs file.
on saving the file, appointment from outlook calendar should vanish.
iam stuck with cancellation part.
can anybody please suggest me how to create a .vcs file to delete appointment from outlook calendar ...

thanks in advance.