[HELP] --> Java Thread Related Help

[tchristofferson]

I am making a plugin and the particular code is using an ExecutorService so it does not freeze the main thread. The only problem is it is still happening. Does anyone know why this is happening?

Code:

double price;

ExecutorService service = Executors.newSingleThreadExecutor();

try {

    price = service.submit(() -> manager.getValue(args[1], 1)).get();

} catch (InterruptedException | ExecutionException e) {

    e.printStackTrace();
    sendError(sender);
    return false;

}

I thought calling the get method on a Future is supposed to run in a different thread.

 

[FroggyKnight]

I've never really used an ExecutorService. So my only answer for you would be just creating a new class and making it a thread. Then just make it handle the prices you're processing. Getting the external data you could use hashmaps or something. Then having the thread returning your prices. Not sure if this is what you want, but just an idea.

 

[AgentTroll]

Calling Future#get() blocks the caller. The fact that you are executing your task on a different thread doesn't make it faster, it just offloads it from the main thread.

You want to schedule a task on the main thread after you have completed your task and use the result from there.

service.submit(() -> {
    manager.getValue(...);
    Bukkit.getScheduler().runTask(plugin, () -> {
        // Use your result here
    });
});