如果在scala中找不到密钥,如何使用密钥访问映射的值？

val map = Map("key1" -> "value1", "key2" -> "value2")
val key = "key1"
val value = map.get(key)

value match {
  case Some(v) => println(s"Value for key $key is $v")
  case None => println(s"Key $key not found")
}

val valueOrDefault = value.getOrElse("default")
println(s"Value for key $key is $valueOrDefault")

val map = Map("key1" -> "value1", "key2" -> "value2")
val key = "key1"
val valueOrDefault = map.getOrElse(key, "default")
println(s"Value for key $key is $valueOrDefault")