枚举类定义抽象方法

enum Color {
    RED("红色"){
        @Override
        public String getContent(){
            return this.toString();
        }
    },BULE("蓝色"){
        @Override
        public String getContent(){
            return this.toString();
        }
    },GREEN("绿色"){
        @Override
        public String getContent(){
            return this.toString();
        }
    } ;
    private String title;  // 枚举跟多实例一样，属性私有化
    private Color(String title){  // 构造方法私有化
        this.title = title;
    }
   @Override
    public String toString(){
        return this.title;
    }
    public abstract String getContent();
}
public class EnumDemo {
    public static void main(String[] args) {
        for (Color c :Color.values()
             ) {
            System.out.println(c.ordinal() + "---" + c.name());
        }
        System.out.println( Color.RED.getContent());
    }

}