How to apply sorting and limiting after groupby using Java streams

Question

I have the following list of Employee data which I need to group based on the employee department and then I want to find the 2 highest-paid employees in each department.

Answer 1

Here is the final answer for those who are interested.

Map> groupByTeachers =
        listOfEmp.stream()
                .collect(
                        Collectors.groupingBy(
                                Employee::getDept,
                                Collectors.collectingAndThen(
                                        Collectors.toList(),
                                        e -> e.stream().sorted(Comparator.comparingLong(Employee::getSalary).reversed()).limit(limit).map(Employee::getName).collect(toList() ) ) ) );