package com.baeldung.dip.mainapp; import com.baeldung.dip.daoimplementations.MapCustomerDao; import com.baeldung.dip.entities.Customer; import com.baeldung.dip.services.CustomerService; import java.util.HashMap; public class MainApplication { public static void main(String args[]) { var customers = new HashMap(); customers.put(1, new Customer("John")); customers.put(2, new Customer("Susan")); CustomerService customerService = new CustomerService(new SimpleCustomerDao(customers)); customerService.findAll().forEach(System.out::println); } }