ArrayList<Employee> employees = getUnsortedEmployeeList();
Comparator<Employee> compareById = (Employee o1, Employee o2) -> o1.getId().compareTo( o2.getId() );
Collections.sort(employees, compareById);
Collections.sort(employees, compareById.reversed());ArrayList<Employee> employees = getUnsortedEmployeeList();
Comparator<Employee> compareById = (Employee o1, Employee o2) -> o1.getId().compareTo( o2.getId() );
Collections.sort(employees, compareById);
Collections.sort(employees, compareById.reversed());
List.sort((a, b) -> {
if (a.value() > b.value()) {
return -1;
}
if (a.value() < b.value()) {
return 1;
}
return 0;
});