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Good. Then this is what I recommend you do:

Create an array constant, something like:

String[] DAY_OF_WEEK = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };

Then in your constructor,
...

Do you know or can you use Arrays yet?

Your constructor is a little twisted. You won't set the variables 'Mon' through 'Sun' based on the parameter Day (which should be called 'day'). In fact,...