Android Studio correto?

boa noite!

aversao do meu android studio eh

Android Studio 3.1.3 Build #AI-173.4819257, built on June 4, 2018 JRE: 1.8.0_152-release-1024-b02 amd64 JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o Windows 10 10.0

Os codigos do desenvolvimento sao diferentes!!

package br.com.alura.agenda

import android.support.v7.app.AppCompatActivity import android.os.Bundle

class ListaAlunosActivity : AppCompatActivity() {

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_lista_alunos)
}

}

nao da para acompanhar

Obrigado pela atencao!!