我可以在 Java Swing JDialog 框上设置计时器以在几毫秒后关闭吗 [英] Can I set a timer on a Java Swing JDialog box to close after a number of milliseconds

问题描述

您好，是否可以创建一个 Java Swing JDialog 框(或替代的 Swing 对象类型)，我可以用它来提醒用户某个事件，然后在某个事件发生后自动关闭对话框延迟;不需要用户必须关闭对话框吗?

Hi is it possible to create a Java Swing JDialog box (or an alternative Swing object type), that I can use to alert the user of a certain event and then automatically close the dialog after a delay; without the user having to close the dialog?

推荐答案

这个解决方案基于 oxbow_lakes'，但它使用了 javax.swing.Timer，它是为这类事情设计的.它总是在事件调度线程上执行它的代码.这对于避免微妙但令人讨厌的错误很重要

This solution is based on oxbow_lakes', but it uses a javax.swing.Timer, which is intended for this type of thing. It always executes its code on the event dispatch thread. This is important to avoid subtle but nasty bugs

import javax.swing.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class Test {

    public static void main(String[] args) {
        JFrame f = new JFrame();
        final JDialog dialog = new JDialog(f, "Test", true);
        Timer timer = new Timer(2000, new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                dialog.setVisible(false);
                dialog.dispose();
            }
        });
        timer.setRepeats(false);
        timer.start();

        dialog.setVisible(true); // if modal, application will pause here

        System.out.println("Dialog closed");
    }
}

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