OrderedListEx to store your appointments Java

Define a class DateTime which has integer attributes  day, month , year and time(Use Military time,
1:00pm is 1300, no colon).  Make
DateTime  Serializable and Comparable.
Define a class appointment which has String attributes description, location
and who. It also has a DateTimeattribute . 
Make appointment Serializable and Comparable by date and time. Us the
SortedLinked list defined in OrderedListEx to store your appointments. Use a
binary file to save and restore the list. Write the entire list out with one
output statement. Write a menu that allows the user to enter new appointments,
delete an appointment, look up a single appointment by date and time,  look up all appointments with a single
person, list all appointments on a given day, list all appointments in order,
and quit.

 
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