java新手，求大神看一下，小弟不明白

public class Time
{
   int hour, minute, second;

   Time(){

   }

   public Time(long currentTime){
      currentTime = System.currentTimeMillis();
   }

   Time(int hour, int minute, int second){
       this.hour = hour;
       this.minute = minute;
       this.second = second;
   }

   void setTime(long elapseTime){
      long currentTime = elapseTime;
   
   }//这块怎么用？

   public long getHour(){
      long totalMilliseconds = System.currentTimeMillis();//如何调用上边Time（long currentTime）来实现这行代码
      long currentHour = (((totalMilliseconds / 1000) / 60) / 60) % 24;
      return currentHour;
   }

   public long getMinute(){
      long totalMilliseconds = System.currentTimeMillis();//如何调用上边Time（long currentTime）
      long currentMinute = ((totalMilliseconds / 1000) / 60) % 60;
      return currentMinute;
   }

   public long getSecond(){
      long totalMilliseconds = System.currentTimeMillis();//如何调用上边Time（long currentTime）
      long currentSecond = (totalMilliseconds / 1000) % 60;
      return currentSecond;
   }
}

当一个人看不懂你描述的问题的时候，说明你的思路真的很糟糕，先打好基础

谢谢，我已经解决问题了，使用this（）来调用同类中构造方法，是我标记打错了