在Scala中打印未来日期

Question

我正在尝试在scala中获取未来的日期。这是我的代码

 val today = java.util.Calendar.getInstance().getTime()


 val future = Calendar.getInstance()
  future.add(Calendar.DAY_OF_YEAR, 7)

  val futureDate = future.getTime()

  val yearFormat = new SimpleDateFormat("YYYY")
  val monthFormat = new SimpleDateFormat("MM")
  val dateFormat = new SimpleDateFormat("DD")

  val currentYear = yearFormat.format(today)  
  val currentMonth = monthFormat.format(today)
  val currentDate = dateFormat.format(today)

  val futureYear = yearFormat.format(futureDate)  
  val futureMonth = monthFormat.format(futureDate)
  val futureDay = dateFormat.format(futureDate)


  println("Current Year :"+currentYear)
  println("Current Month :"+currentMonth)
  println("Current Date :"+currentDate)
  println("Future Year :"+futureYear)
  println("Future Month :"+futureMonth)
  println("Future Date :"+futureDay)

代码很简单。我想从今天的日期开始添加7天并打印日期。当我跑这个。它正确打印未来日期

Current Year :2015
Current Month :01
Current Date :30
Future Year :2015
Future Month :02
Future Date :37

请纠正我的错过。我是Scala的新手

Answer 1

您应该使用dd代替DD：

  val yearFormat = new SimpleDateFormat("yyyy")
  val monthFormat = new SimpleDateFormat("MM")
  val dateFormat = new SimpleDateFormat("dd")

D对应Day in year。你可以将来参考。 here。