/**
* int ordinal()
* int compareTo(E o)
* String name()
* String toString()
* <T> T valueOf(Class<T> type,String name)
* values()
* 此方法虽然在JDK文档中查找不到，但每个枚举类都具有该方法，它遍历枚举类的所有枚举值非常方便
*/
public static void main(String[] args) {
//demo1();
// Week2 mon = Week2.valueOf(Week2.class, "MON"); //通过字节码对象获取枚举项
// System.out.println(mon);
Week2[] arr = Week2.values();
for (Week2 week2 : arr) {
System.out.println(week2);
}
}
public static void demo1() {
Week2 mon = Week2.MON;
Week2 tue = Week2.TUE;
Week2 wed = Week2.WED;
/*System.out.println(mon.ordinal()); //枚举项都是有编号的
System.out.println(tue.ordinal());
System.out.println(wed.ordinal());
System.out.println(mon.compareTo(tue)); //比较的是编号
System.out.println(mon.compareTo(wed));*/
System.out.println(mon.name()); //获取实例名称
System.out.println(mon.toString()); //调用重写之后的toString方法
}
原文：http://blog.51cto.com/357712148/2158368