Showing Morning, afternoon, evening, night message based on Time in java

Question

What i am trying to do::

Show message based on

• Good morning (12am-12pm)
• Good after noon (12pm -4pm)
• Good evening

Answer 1

For anyone who is looking for the latest Kotlin syntax for @SMA's answer, here is the helper function :

fun getGreetingMessage():String{
    val c = Calendar.getInstance()
    val timeOfDay = c.get(Calendar.HOUR_OF_DAY)

    return when (timeOfDay) {
           in 0..11 -> "Good Morning"
           in 12..15 -> "Good Afternoon"
           in 16..20 -> "Good Evening"
           in 21..23 -> "Good Night"
           else -> "Hello"
      }
    }