java - 你好，我想打印我的列表，它在哪里是用户类对象。谁能帮我？

Question

   //i have User class, with userID and UserFullName
   User user1 =new User(1,"ika Jogl");
   User user2 =new User(2,"Galan Tadze");
   User user3 =new User(3,"Il Chavdze");

   userList.add(user1);
   userList.add(user2);
   userList.add(user3);//how to print this array?   

你好，我想打印我的列表，它的 User 类对象在哪里。有人可以帮助我吗？

Answer 1

假设您有一个链接的数组列表: List<User> userList = new ArrayList();

您可以使用 lambda 表达式来输出列表:-

IntStream.range(0, userList.size()).forEach(m -> System.out.println("Username: " userList.get(m).UserFullName);