如何将AsyncTask从Android移植到java？

import java.util.concurrent.*;

public class AsyncTask<T> {
    private final Callable<T> callable;
    private Future<T> future;

    public AsyncTask(Callable<T> callable) {
        this.callable = callable;
    }

    public void execute() {
        ExecutorService executor = Executors.newSingleThreadExecutor();
        future = executor.submit(callable);
    }

    public T getResult() throws InterruptedException, ExecutionException {
        return future.get();
    }

    public static void main(String[] args) throws InterruptedException, ExecutionException {
        AsyncTask<String> asyncTask = new AsyncTask<>(() -> {
            // 在这里执行异步任务
            return "Hello, world!";
        });

        asyncTask.execute();
        String result = asyncTask.getResult();
        System.out.println(result);
    }
}