What's missing in this code? [closed]

There is no class named Tarefa , the class name is TarefaDeCasa

fun main(args: Array<String>) {
    val minhaTarefa = TarefaDeCasa("Daniel", "Programação", 10, "30 de Setembro")

    minhaTarefa.entregar()
}

class TarefaDeCasa(
    var nomeDoAluno: String,
    var nomeDaMateria: String,
    var nota: Int,
    var dataDeEntrega: String) {

    fun entregar() {
        println("o aluno ${nomeDoAluno} entregou a tarefa do dia ${dataDeEntrega} e recebeu a nota ${nota}")
    }
}

See working at try.kotlinlang.org

So it works, I think it was just typing error since the created class calls TarefaDeCasa and the call to instantiate was Tarefa :

fun main(args: Array<String>) {
    val minhaTarefa = TarefaDeCasa("Daniel", "Programação", 10, "30 de Setembro")
    minhaTarefa.entregar()
}
class TarefaDeCasa(
    var nomeDoAluno: String,
    var nomeDaMateria: String,
    var nota: Int,
    var dataDeEntrega: String) {

    fun entregar() {
        println("o aluno ${nomeDoAluno} entregou a tarefa do dia ${dataDeEntrega} e recebeu a nota ${nota}")
    }
}

See running on ideone . And in Coding Ground . Also put it in GitHub for future reference .