Before you can use the java concurrent API, you need to add some dependencies to your "pom.xml" file.

Here's the minimal dependencies needed in order for the following examples to work:

<dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>commons-lang3</artifactId>
    <version>3.17.0</version>
</dependency>

final long INITIAL_DELAY = 500l;
final long DELAY = 1000l;

final String namingPattern = "_newSingleThreadScheduledExecutor";

final BasicThreadFactory.Builder builder = new BasicThreadFactory.Builder();

final BasicThreadFactory basicThreadFactory = builder.namingPattern(namingPattern).daemon(true).build();

final ScheduledExecutorService scheduledExecutorService = Executors.newSingleThreadScheduledExecutor(basicThreadFactory);

final Runnable runnable = () -> System.out.println(Thread.currentThread().getName() + ": Hello!");

scheduledExecutorService.scheduleWithFixedDelay(runnable, INITIAL_DELAY, DELAY, TimeUnit.MILLISECONDS);

scheduledExecutorService.awaitTermination(5000l, TimeUnit.MILLISECONDS);

scheduledExecutorService.shutdown();

Output:

_newSingleThreadScheduledExecutor: Hello!
_newSingleThreadScheduledExecutor: Hello!
_newSingleThreadScheduledExecutor: Hello!
_newSingleThreadScheduledExecutor: Hello!
_newSingleThreadScheduledExecutor: Hello!