Given public class Employee { private String name; private LocalDate birthday; // the constructors, getters, and setters methods go here } and List roster = new ArrayList(); // ... Predicate p = (Employee e) - e.getBirthday(). isBefore(IsoChronology. INSTANCE.date(1989, 1, 1)); Set s1 = roster.stream() . filter(p) Which code fragment on line 1 makes the s1 set contain the names of all employees born before January 1, 1989?

Question

Given public class Employee { private String name; private LocalDate birthday; // the constructors, getters, and setters methods go here } and List roster = new ArrayList<>(); // ... Predicate p = (Employee e) -> e.getBirthday(). isBefore(IsoChronology. INSTANCE.date(1989, 1, 1)); Set s1 = roster.stream() . filter(p) Which code fragment on line 1 makes the s1 set contain the names of all employees born before January 1, 1989?

Accepted Answer

B. .collect(Collectors.toCollection(TreeSet::new));

Answer

A. .collect(Collectors.partitioningBy(y))
 .get(true)
 .stream()
 .map(Employee::getName)

Answer

C. .collect(Collectors.partitioningBy(y))
 .get(false)
 .map(Employee::getName)
 .collect(Collectors.toSet());

Answer

D. .collect(Collectors.partitioningBy(y, Collectors.mapping(
 Employee::getName, Collectors.toSet()))).

Given public class Employee { private String name; private LocalDate birthday; // the constructors, getters, and setters methods go here } and List<Employee> roster = new ArrayList<>(); //…

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