java中如何使用for-each遍历集合呢？

实现思路:
    使用
	for (type var : collections) {
        /*实际业务代码*/
    }

package com.java265;
import java.util.Arraylist;
import java.util.List;

public class ForEachGeneric {
    public static void main(String[] args) {
        List<Customer> customers = new ArrayList<>();
        customers.add(new Customer());
        customers.add(new Customer());
        customers.add(new Customer());

        for (Customer customer : customers) {
            System.out.println(customer.getFirstName());
        }
    }
}