example

final Scanner scanner = new Scanner(System.in);
Flow.trying(() -> {
    System.out.print("what is your name?  ");
    System.out.println(String.format("greetings, %s!", scanner.nextLine()));
}).risen((Throwable risen) -> {
    System.err.println("something went wrong ):");
    risen.printStackTrace();
}).ensuring(() -> {
    IO.closeQuietly(scanner);
}).dispatch();