how to interrupt a scanner.nextline() call

Question

There are many threads on SO about interrupting reading the system.in but what I am looking for here is some kind of advice as to how to best code what I am trying to achieve.

Answer 1

A FutureTask together with a lambda expression can also be used:

FutureTask readNextLine = new FutureTask(() -> {
  return scanner.nextLine();
});

ExecutorService executor = Executors.newFixedThreadPool(2);
executor.execute(readNextLine);

try {
  String token = readNextLine.get(5000, TimeUnit.MILLISECONDS);
  ...
} catch (TimeoutException e) {
  // handle time out
}