You need a java program that will calculate the invoice for a client and then print out an invoice to the screen. The consulting rate is $200 per hour.
Your Java program should have the following options:
1. Add Client
2. Create Invoice
3. Quit
If the first option is selected the consultant will enter the clients name, id #, address and number of hours worked.
If the second option is selected the consultant will be asked for a client's ID #. If the client exists then an invoice will be displayed to the screen that shows the client's Id#, address, name, the number of hours worked, the consulting rate, and the total amount of the bill. Also, include a tax rate of 8%. If the client does not exist then display a message to the screen telling the consultant that the client must be added before an invoice can be created for the client.