How do I make a progression with a variable in Java?

问题

I am interested in how to call a variable that changes, such as customer1, customer2, customer3, etc. These customer variables are populated in this particular Class. I would like the program to automatically type that number when I perform something such as customer1.returnName(); if the user types a 1. without me making a case by case code. I would like the user to type the number of the customer and it automatically uses that number. What function is best for this?

回答1:

If you have numbered variables, then use a list. Something like

ArrayList<Customer> customers = new ArrayList<Customer>();

customers.add(new Customer("name"));

customers.get(0).returnName();

来源：https://stackoverflow.com/questions/36345825/how-do-i-make-a-progression-with-a-variable-in-java