Java中关于枚举类型的使用

 

一开始定义的枚举类型程序为：

public class CollectionForLoop{

       public static void main(String[] args) {

              enum MySeasonEnum{spring, summer, fall, winter}

              for(MySeasonEnum season : MySeasonEnum.values())

              {

                     System.out.println("The season is now " + season);

              }

       }

}

在DOS下执行javac CollectionForLoop.java出错为：

CollectionForLoop.java:3:枚举类型不能为本地类型

                     Enum MySeasonEnum

                     ^

1 错误

       原来声明枚举类型的位置不对，将去改为：

public class CollectionForLoop{

       enum MySeasonEnum{spring, summer, fall, winter}

       public static void main(String[] args) {

              for(MySeasonEnum season : MySeasonEnum.values())

              {

                     System.out.println("The season is now " + season);

              }

       }

}

       执行结果正确。