小编Nje*_*ena的帖子

我有一个Employee包含四个字段的类：id、name、department 和 email。我创建了五个对象，设置了值并将它们全部添加到列表中。

现在，我想将该列表转换为地图，但我无法做到。供您参考，这是我尝试过的代码

Employee emp1 = new Employee("1", "Mayank", "HR", "mayank@gmail.com");
Employee emp2 = new Employee("2", "Mahesh", "Trainer", "Mahesh@gmail.com");
Employee emp3 = new Employee("3", "Vipul", "SEO", "Vipul@gmail.com");
Employee emp4 = new Employee("4", "Ajay", "Devlopwr", "Ajay@gmail.com");
Employee emp5 = new Employee("5", "Rakesh", "Marketing", "Rakesh@gmail.com");

//add class object to list
List < Employee > listWmp = new ArrayList < > ();
listWmp.add(0, emp1);
listWmp.add(1, emp2);
listWmp.add(2, emp3);
listWmp.add(3, emp4);
listWmp.add(4, emp5);
System.out.println("list elements are : " + listWmp);
//convert …