CS 220 – Programming with Data Structures – Fall 2009
Lab #1 (bug fix)
(Due: 9/14/09 by 1:00pm)
Your first lab will be a straightforward lab focusing on reviewing Java. You will write classes
for a (very) simplistic calendar application, along with a method for testing your classes.
The calendar application will involve three classes: Date,Event, and Calendar. You will also
write a class TestCalendar that contains a (main) test method.
Specification for the Date class:
•Fields/Members:
–int year – The year, 2000 to 2100.
–int month – The month, 1 to 12.
–int day – The day, 1 to 31.
•Constructors:
–Date(int year, int month, int day) – Make certain that each field value is within
the specified range, else this is an error.
•Methods:
–Accessors for all three fields: getYear,getMonth,getDay.
–String toString() – Default method for producing string version of a date, which
should be of the form: "month/day/year".
Specification for the Event class:
•Fields/Members:
–Date date – The date of the event.
–int hour – The time/hour of the event, 0 to 23.
–String activity – A description of the event.
•Constructors:
–Event(int year, int month, int day, int hour) – Make certain that each field
value is valid, else this is an error.
–Event(int year, int month, int day, int hour, String activity) – Same as above.
•Methods:
–Accessors for all three fields: getDate,getHour,getActivity.
–void setActivity(String newActivity) – Mutator for activity field.
–String toString() – Default method for producing string version of an Event, which
should be of the form: "month/day/year @hour: activity".
Specification for the Calendar class:
•Fields/Members:
–Event[] events – An array holding the scheduled events. Make it size 100.
–int numEvents – The number of events currently scheduled.
•Constructors:
–Calendar() – This constructor must initialize the fields of the Calendar object: creating
a 100-element Event[] and setting numEvents to 0 (zero).
