java :: enum 에 관한 예제

[EnumEx1.java]

class ProductEx1{
	public static void main(String[] args) {
		Product p1 = new Product("En,Ca",7078);
		Product p2 = new Product("En,Ca",7078);		
		System.out.println(p1 == p2);
		System.out.println(p1.equals(p2));
		System.out.println("p1 hashCode : "+p1.hashCode()+
			" , p1 : "+p1);
		System.out.println("p2 hashCode : "+p2.hashCode()+
			" , p2 : "+p2);
	}
}

[EnumEx2.java]

public class EnumEx1 {
    public enum Lesson {
		JAVA, XML, EJB
	}

    public static void main(String[] args) {
        Lesson le = Lesson.JAVA;

        System.out.println("Lesson : " + le);
        System.out.println("XML : " + Lesson.XML);
    }
}

[EnumEx3.java]

class EnumEx2 {
	public enum Item{
		Add, Del, Search, Cancel
	}

	public static void main(String[] args) {
		Item a1 = Item.Search;
		if (a1 instanceof Object){ 
			System.out.println(a1.toString()+"^^");
			System.out.println("OK! instanceof Object");
			System.out.println("저장된 실제 정수값 : "+a1.ordinal());
		}

		Item[] items = Item.values();
		System.out.println("items.length : "+items.length); 

		for(Item n : Item.values())
			System.out.println(n+":"+n.ordinal());		
	}
}