public class EnumExample { public static void main(String[] args) { Apple ap = Apple.Jonathan; System.out.println(ap); System.out.println(ap == Apple.Jonathan); switch (ap) { case Jonathan: System.out.println("It is Jonathan"); break; case GoldenDel: System.out.println("It is Golden Del"); break; case RedDel: System.out.println("It is Red Del"); break; case Winesap: System.out.println("It is Winesap"); break; case Contland: System.out.println("It is Cortland"); break; } System.out.println(Apple.valueOf("GoldenDel")); for (Apple value : Apple.values()) { System.out.println(value + ": " + value.getPrice() + ": " + value.ordinal()); } System.out.println(Apple.Contland + ": " + Apple.Contland.getPrice()); Apple.Contland.setPrice(19); System.out.println(Apple.Contland + ": " + Apple.Contland.getPrice()); Apple ap1, ap2, ap3; ap1 = Apple.Jonathan; ap2 = Apple.RedDel; ap3 = Apple.Jonathan; System.out.println(ap1.equals(ap2)); System.out.println(ap1.compareTo(ap2)); System.out.println(ap1.equals(ap3)); System.out.println(ap1 == ap3); } } enum Apple { Jonathan(20), GoldenDel(15), RedDel(5), Winesap(30), Contland(17); int price; Apple(int price) { this.price = price; } Apple() { price = -1; } int getPrice() { return price; } void setPrice(int price) { this.price = price; } }