tion manager class using java Explain your code in few words. I have included other classes th

implement a database about people, they could be made up, but you want to include a sizable number, maybe 10-20. The data that you store for each person must include a name and at least one additional piece of information, such as a birthday. You can assume that the names are unique. The database should enable you to enter, remove, modify, or search this data. You also should be able to save the data in a file for use later. Define a class Person to represent a person and another one to represent the database. A dictionary should be a data member of the database class, with Person objects as search keys for this dictionary. Write a program that tests and demonstrates your database.

B elow for each class you find a UML and description of the public interface. Implementing the public interface as described is madatory. There's freedom on how to implement these classes.The private properties and private methods are under your control.. There are multiple ways of implementing all these classes. Feel free to add private properties and methods. For each object, it's mandatory to create a header file (.h), implementation file (.cpp) and a driver. Blank files are included. The header should have the class definition in it. The implementation file should contain the implementations of the methods laid out in the header fine. And finally the Driver should test/demonstrate all the features of the class. It's best to develop the driver as the class is being written. Check each section to see if there are added additional requirements for the driver. Two test suites are included so that work can be checked.  It's important to implement the drivers to test and demonstrate…

Using Java. Enhance the invoice-printing program by providing for two kinds of line items: One kind describes products that are purchased in certain numerical quantities (such as “3 toasters”), another describes a fixed charge (such as “shipping: $5.00”). Hint: Use inheritance. I've seen this question asked before, however, the code is very confusing to me.