Complete and fully test the class Time that Exercise 2 describes. Add two more constructors that are analogous to the setTime methods described in Parts c and d of Exercise 2. Also include the following methods:

• getTime24 returns a string that gives the time in 24-hour notation hhmm. For example, if the hour value is 7 and the minute value is 25, return "0725". If the hour value is 0 and the minute value is 5, return "0005". If the hour value is 15 and the minute value is 30, return "1530".
• getTime12 returns a string that gives the time in 12-hour notation h:mm xx. For example, if the hour value is 7 and the minute value is 25, return "7:25 am". If the hour value is 0 and the minute value is 5, return "12:05 am". If the hour value is 15 and the minute value is 30, return "3:30 pm".

Exercise 2

Consider a class Time that represents a time of day. It has attributes for the hour and minute. The hour value ranges from 0 to 23, where the range 0 to 11 represents a time before noon.

The minute value ranges from 0 to 59.

a. Write a default constructor that initializes the time to 0 hours, 0 minutes.

b. Write a private method isValid(hour, minute) that returns true if the given hour and minute values are in the appropriate range.

c. Write a method setTime(hour, minute) that sets the time if the given values are valid.

d. Write another method setTime(hour, minute, isAM) that sets the time if the given values are valid. The given hour should be in the range 1 to 12. The parameter isAm is true if the time is an a.m. time and false otherwise.