Write a program that allows students to schedule appointments at either 1, 2,3,4,5, or 6, o'clock pm. Use an array of six strings to store the names for the time slots. Write a loop that iterates as long as the array has a free space. Within a try block, allow the user to enter a time and a name. If the time is free, put the name in the array. If the time is not free, throw a TimeInUseException. If the time is not valid, throw an InvalidTimeException. Use a catch block for each different kind of exception.