Initialization Block

class Student(val name: String, val gpa: Double, val semester: String, val estimatedGraduationYear: Int) {
  init {
    println("$name has ${estimatedGraduationYear -2020} years left in college.")
  }
}
fun main() {
  var student = Student("Lucia", 3.95, "Fall", 2022)
//Prints: Lucia has 2 years left in college. 
}