ScalaのPerson

package com.example.scala.person


class Person(val name: String, val age: Int){

  def introduce(): Unit ={
    printf("私の名前は%sです。年齢は%dです。\n", name, age)
   }

  def toshi(): Unit ={
  //var adult: String //宣言もあんまりしないほうでもよい
    //if(age >=20){
    // adult = "成年"}
    //else {
    //adult = "未成年"}
    // }
    //}

    val adult = if(age>19){
      "成年"
    }else {
      "未成年"
    }
    printf("私の名前は%sです。年齢は%dです。%sです。\n", name, age,adult)


    age match {
      case 20 => "1"
      case 30 => "2"
      case 40 => "3"
      case 50 => "4"
      case 60 => "5"
      case _ => "?"
    }
    println("test\n",age)
  }

  def toshi2(): Unit={
    val what = age match{
      case y if y <20 => "未成年"
      case _ =>"成年"
    }

    printf("私の名前は%sです。年齢は%dです。%sです。\n", name, age,what)
  }


  def isToshiue(other: Person): Boolean = {
    return age < other.age
  }
}

object Person

object PersonMain {
  def main (args: Array[String]): Unit = {
    val aramPark = new Person("朴",23)
    //aramPark.introduce()
    //aramPark.toshi()
    aramPark.toshi2()
    val tabe = new Person("rara",35)
    tabe.isToshiue(aramPark)
  }
}