You will design and implement your own data class. The class will store data that has been read as user input from the keyboard (see Getting Input below), and provide necessary operations. As the data stored relates to monetary change, the class should be named Change. The class requires at least 2 instance variables for the name of a person and the coin change amount to be given to that person. You may also wish to use 4 instance variables to represent amounts for each of the 4 coin denominations (see Client Class below). There should be no need for more than these instance variables. However, if you wish to use more instance variables, you must provide legitimate justification for their usage in the internal and external documentation. Your class will need to have at least a default constructor, and a constructor with two parameters: one parameter being a name and the other a coin amount. Your class should also provide appropriate get and set methods for client usage. Other methods may be provided as needed. However, make sure they are necessary for good class design; you must provide legitimate justification for their usage in the internal and external documentation. In particular, your class should NOT include Input and Output methods. The only way to get data out of a data class object to the client program is to use an appropriate get method. The data class methods must not write data out. Data should be entered into a data class object via a constructor or an appropriate set method. Input for the client program will come from keyboard (entered by the user). The input should consist of: the name of a person, and a coin value (as an integer). The program should
You will design and implement your own data class. The class will store data that has been read as
user input from the keyboard (see Getting Input below), and provide necessary operations. As the
data stored relates to monetary change, the class should be named Change. The class requires at
least 2 instance variables for the name of a person and the coin change amount to be given to that
person. You may also wish to use 4 instance variables to represent amounts for each of the 4 coin
denominations (see Client Class below). There should be no need for more than these instance
variables. However, if you wish to use more instance variables, you must provide legitimate
justification for their usage in the internal and external documentation.
Your class will need to have at least a default constructor, and a constructor with two parameters:
one parameter being a name and the other a coin amount. Your class should also provide appropriate
get and set methods for client usage. Other methods may be provided as needed. However, make
sure they are necessary for good class design; you must provide legitimate justification for their
usage in the internal and external documentation. In particular, your class should NOT include Input
and Output methods. The only way to get data out of a data class object to the client program is to
use an appropriate get method. The data class methods must not write data out. Data should be
entered into a data class object via a constructor or an appropriate set method.
Input for the client program will come from keyboard (entered by the user). The input should consist
of: the name of a person, and a coin value (as an integer). The program should validate the input
coin value to ensure that it is in the range 5 to 95, and is evenly divisible by 5. Names are one-word
strings. You should ask the user to enter the required information using a loop with a question after
each loop iteration to check if the user wants to end the input of data. It is recommended for the user
to input at least 9 such data – this can be conveyed to the user using a message before entering the
loop.
The client program should read the input data from the user (or the method with hardcoded inputs)
and use the Change class to store the data entered. This data should be stored in a Change class
object. You will need a data structure to store the Change class objects according to the number of
persons entered. Thus, you are to utilize an array of Change objects. Do not use ArrayList for this
assignment.
It should be noted that it is possible to have the same name entered numerous times, but the coin
values for such repetitions could be different. When the name is the same, it would mean the same
individual, and your program should add up the coin amounts to obtain a total amount for that
individual; this should be performed before computing the change to be given. Note that in this
scenario, the total amount for an individual may end up being over 100, 200, 300, or more cents.
Processing would involve determining repeated names and accumulating the total for those repeated
names. You must ensure that there are no objects with repeated names in the array. Then
methods would need to be called to calculate the required output corresponding to the coin amounts
stored in the array of objects. Output change values must consist of the following denominations:
50 cent, 20 cent, 10 cent and 5 cent coins. The program should aim to give as much of the higher
valued coins as possible. A poor solution for an input of 30 cents is to give six 5 cent coins. The
better solution is to give a 20 cent coin and a 10 cent coin.
Once the data input has been completed, your program should then display a menu screen as
illustrated below. The program will continue to show the menu and execute the menu options until
"Exit" is selected by entering the value 5 at the menu prompt.
1. Enter a name and display change to be given for each denomination
2. Find the name with the smallest amount and display change to be
given for each denomination
3. Find the name with the largest amount and display change to be
given for each denomination
4. Calculate and display the largest number of coin denomination,
and the total number of the coin
5. Exit
When the user enters the value 1 at the menu prompt, your program will ask for a name. As an
example, if the user enters the name Jane (as in the example input above), the program will output:
Customer:
Jane 165 cent
Change:
50 cent: 3
10 cent: 1
5 cent: 1
N.B. change values of 0 are not shown for screen output.
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