Create temporary directory with the JVM (Scala here)

tmpdir.scala

def createTempDir(tmpName: String): String = {
	val tmpDir = Paths.get(System.getProperty("java.io.tmpdir"))
	val name: Path = tmpDir.getFileSystem.getPath(tmpName)
	if (name.getParent != null) throw new IllegalArgumentException("Invalid prefix or suffix")
	tmpDir.resolve(name).toString
}