enum Planet { MERCURY, VENUS, EARTH, MARS, JUPITER, SATURN, URANUS, NEPTUNE } EnumSetplanets = EnumSet.allOf(Planet.class); System.out.println(planets);
[MERCURY, VENUS, EARTH, MARS, JUPITER, SATURN, URANUS, NEPTUNE]
enum Day { MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY, SUNDAY } EnumSetweekend = EnumSet.of(Day.SATURDAY, Day.SUNDAY); System.out.println(weekend); EnumSet allDaysExceptSunday = EnumSet.complementOf(weekend); System.out.println(allDaysExceptSunday);
[SATURDAY, SUNDAY] [MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY]The java.util package library is a part of the Java Class Library (JCL) which provides the standard Java Data structures and algorithms.