- for (Map.Entry<String, Boolean> entry : registered.entrySet()) {
- System.out.println(entry.getKey() + ": " + entry.getValue());
+ final var writer = new PlainTextWriterImpl(System.out);
+
+ try {
+ for (var entry : registered.entrySet()) {
+ writer.println("{}: {}", entry.getKey(), entry.getValue());
+ }
+ } catch (IOException e) {
+ e.printStackTrace();
+ return 3;