Expect member declaration error on declared variables in kotlin

Question

I'm a beginner in kotlin and I'm getting errors on my variables when I tried using them. please I need help. Here is my code

package com.example.myapplication
import java.util.*
class savedData(hour:Int, Minutes:Int) {
  var calendar= Calendar.getInstance()
  calendar.set(Calendar.HOUR_OF_DAY,hour )
  calendar.set(Calendar.MINUTE,Minutes )
  calendar.set(Calendar.SECOND,0 )
}

I get errors when i use the calendar variable in my code above

Answer 1

This will work:

class savedData(hour:Int, Minutes:Int) {
     var calendar= Calendar.getInstance().apply{
         this.set(Calendar.HOUR_OF_DAY,hour )
         this.set(Calendar.MINUTE,Minutes )
         this.set(Calendar.SECOND,0)
     }
}

Within a class body, its properties and methods are declared. The executable code must be inside these methods (or in init {} block, or in some setters/getters, or in scope functions like above), not in the body of the class.