java - 我该如何做才能让方法等待执行器运行？

Question

我有一个执行程序在单个ThreadExecutor中运行，我需要在它完成后调用其他方法(saveJsonFile())，但仅当我的执行程序完成时

我与执行者的类(class)

        ExecutorService e = Executors.newSingleThreadExecutor();

                    //Download HTML and Unzip Threads
                    typeDownloaded = "html";
                    DownloadUtil.downloadHtml(e, this, dns, port, offlineUuid, filePathHtmlDownload, cookies, typeDownloaded);
                    UnzipUtil.unZipHtml(e, this, filePathHtmlDownload, outputFolder, typeDownloaded);
                    e.shutdown();
                    saveJsonFile();

我的 UnzipUtil 类:

public class UnzipUtil {

    public static void unZipHtml(Executor e, MainViewController controller, String zipFile, String outputFolder, String type) {
        e.execute(new UnzipTask(controller, zipFile, outputFolder, type));
    }

    public static void unZipImages(Executor e, MainViewController controller, int numImg, String outputFolder, String type) throws SystemException, PortalException {
        String filePath;

        filePath = System.getProperty("user.home") + File.separator + "Documents" + File.separator + "TargetApp" + File.separator + "TempImageDownload.zip";
        System.out.println(filePath);
        e.execute(new UnzipTask(controller, filePath, outputFolder, type));

    }
}

Answer 1

也许我没有明白这个问题，但是你不能使用 Futures and Callables ？基本上，您可以指定一个“回调”，当您的解压缩任务完成时将调用该“回调”...引用链接(您还可以在其中找到有关如何使用机器的简单示例):

A Future represents the result of an asynchronous computation. Methods are provided to check if the computation is complete, to wait for its completion, and to retrieve the result of the computation.