data structure

Suppose there is only one customer service available in SAMBA Bank on Thursday morning, in every 4 minutes a new customer arrives at the end of the waiting line, each customer will need 7 minutes for the service

Write a program to print out the information after the first 60 minutes

The time of arriving for each customer The time of leaving for each customer How many customers are in the line?

Who is the current serving customer?

in java using Queue but without using the library

please write it don't post a screenshot