use java code

Use a circular array, to implement a queue, based on an array with one unused location and no counter. Test all methods before you proceed to use your class in the application.

Whenever people form a line to wait for services, such as in a supermarket, a movie theater, or an airport, the service provider wants to minimize the number of agents it employs while keeping the customer's waiting time at a tolerable level.

The checkout area of a local store has eight checkout registers, each with its own line. Due to space constraints, each line can accommodate at most four people. As a result, when all the checkout lines are full, new customers leave the store without making a purchase. Simulate this checkout area. Assume an average service time is 2 minutes per customer. If a new customer arrives every t minutes, for what value of t will this store serve the most customers during a 16-hour workday?