Using a Static Variable

In Practicum you were introduced to a use for a static variable, whereby all instances of a certain class in a program shared the same variable. This allowed Patron objects (i.e. Patron instances) to be created with auto-generated unique id numbers. You have also already seen and used static methods with the Test class's ck methods (e.g., ckEquals). Static variables and methods are not associated with a specific object but with a specific class.

This exercise will let you experiment with the static variable nextPatronID

• Continue the addPatronLab example from the previous exercise.
• Add to the top of the Patron class the static variable

  	private static int nextPatronID
  

  and initialize it to 100001. The example from Practicum initialized the variable to 1001. We are initializing the variable to 100001 to represent a numbering sequence for patrons who are children.
• Add a second Patron constructor that only takes a name and phone number as parameters and then uses the nextPatronID to assign the patron ID, as shown in Practicum. Don't forget to then update the value of nextPatronID for the next Patron created.
• Add code to the main method in the Patron class to test the new Patron constructor. Be sure to verify that the nextPatronID works as described in Practicum.
• Submit your Patron instance variables, static variable and new constructor below:
  
  
• Submit the main method of your Patron class below: