Retrieving list of employees with lowest salary using stream [duplicate]

Answer 1

You could group by salary and then retrieve the list of employees with minimum salary:

List employees = new ArrayList(){{
    add(new Employee("bilbo baggins", 10));
    add(new Employee("frodo baggins", 10));
    add(new Employee("gandalf grey", 100));
}};

Map> result = employees.stream().collect(groupingBy(Employee::getSalary));

List allMin = result.entrySet().stream()
        .min(Comparator.comparing(Map.Entry::getKey))
        .map(Map.Entry::getValue)
        .orElse(Collections.emptyList());

allMin.forEach(System.out::println);

Output

Employee{name='bilbo baggins', salary=10}
Employee{name='frodo baggins', salary=10}