黑马程序员_实现带有构造函数的枚举代码简单例子

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       publicstatic void main(String[] args)

       {

              WeekDayweekDay = WeekDay.MON;

              System.out.println(weekDay.name());

              System.out.println(weekDay.ordinal());

              System.out.println(weekDay.valueOf("SUN").toString());

              System.out.println(weekDay.values().length);

 

       }

      

       publicenum WeekDay

       {

              //publicWeekDay();构造函数要放在元素的后面

              //SUN,MON,TUE,WED,THI,FRI,SAT//有构造函数时，后面要加;

              SUN(1),MON(),TUE,WED,THI,FRI,SAT;

              //publicWeekDay();

 

              //默认调用的是不带参数的构造函数：

//为了指定调用哪个构造函数，可以在元素后面添加括号

//如：SUN(1)---调用的是带参数的构造函数,

//MON(),调用的是带参数的构造函数

              privateWeekDay(){

                     System.out.println("first");

              }

              privateWeekDay(int day){

                     System.out.println("Second");

              }

       }

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