JavaFX periodic background task

Question

I try to run in JavaFX application background thread periodically, which modifies some GUI property.

I think I know how to use Task and Service

Answer 1

Here is a solution using Java 8 and ReactFX. Say that you want to periodically recompute the value of Label.textProperty().

Label label = ...;

EventStreams.ticks(Duration.ofSeconds(5))          // emits periodic ticks
    .supplyCompletionStage(() -> getStatusAsync()) // starts a background task on each tick
    .await()                                       // emits task results, when ready
    .subscribe(label::setText);                    // performs label.setText() for each result

CompletionStage getStatusAsync() {
    return CompletableFuture.supplyAsync(() -> getStatusFromNetwork());
}

String getStatusFromNetwork() {
    // ...
}

Compared to Sergey's solution, you don't dedicate the whole thread to getting status from the network, but instead use the shared thread pool for that.