定义用于扩展类的模板

abstract class Schedule {

    

    public String scheduleYear;
    /*
    来 自*
     时 代 J a v a - nowjava.com
    */

    public String teamName;

    

    

    public Schedule(){}

    

    public Schedule(String teamName){

        this.teamName = teamName;

    }

    // 来自 nowjava - 时代Java

    abstract void calculateDaysPlayed(int month);

    

}

 class TeamSchedule extends Schedule {


   public TeamSchedule(String teamName) {

       super(teamName);

   }


   @Override

   void calculateDaysPlayed(int month) {