The main design of Scala-IO is around automatic closing of resources each time a resource is accessed in order to ensure that a programmer cannot unintentionally leave resources open in the face of exceptions or other unexpected situations. However, there are cases where the Scala-IO API is desired but the resource management is undesired. The classic case is of reading or writing to System.in and out. Thus Unmanaged resources exist to satisfy this use-case.
Since unmanaged resources is a less common use-case there is not a factory object like there is for normal managed Resources. Instead certain objects can be converted to unmanaged resources using the JavaConverters implicit methods as follows: