SwingWorker 没有执行 doInBackGround()

Question

我正在做的项目需要一个摇摆工人，所以我尝试使用它。我尝试如下所示使用它，但是，该程序仅产生 "Doing swing stuff" 输出。

如何让SwingWorker完成doInBackGround方法？

import javax.swing.SwingWorker;

public class WorkerTest {

public static void main(String[] args) {
    Worker a = new Worker();
    a.execute();
    System.out.println("Doing swing stuff");

}

static class Worker extends SwingWorker<Void, Void> {

    protected void done() {
        System.out.println("done");
    }

    @Override
    protected Void doInBackground(){
        try {
            System.out.println("working");
            Thread.sleep(5000);

        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }
}
}

Answer 1

变化：

public static void main(String[] args) {
    Worker a = new Worker();
    a.execute();
    System.out.println("Doing swing stuff");
}

收件人：

public static void main(String[] args) {
    Worker a = new Worker();
    a.execute();
    System.out.println("Doing swing stuff");
    JOptionPane.showConfirmDialog(null, "Cancel", "Cancel this task?", JOptionPane.DEFAULT_OPTION);
}

选项窗格（打开）使事件调度线程保持活动状态。

SwingWorker 没有执行 doInBackGround()

SwingWorker not executing doInBackGround()

java

swing

swingworker