如何在一段时间内禁用JButton？

Question

I would like to disable a JButton for about 10 seconds. Is there way to do this?

Thank you

Answer 1

Use a Swing Timer , when triggered, it notifies the registered listener within the context of the Event Dispatching Thread, making it safe to update the UI from.

See How to use Swing Timers and Concurrency in Swing for more details

Answer 2

First read the answer from @MadProgrammer and go through the links provided there. If you still need a working example based on those suggestions, following is one.

why the solution is better than few solutions presented

It's because it uses a javax.swing.Timer to enable the button that enables GUI related tasks to be automatically executed on the event-dispatch thread (EDT). This saves the swing application from being intermixed with non EDT operations.

Please try the following example:

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.Timer;

public class SwingDemo extends JPanel {
    private final JButton button;
    private final Timer stopwatch;
    private final int SEC = 10;

    public SwingDemo() {
        button = new JButton("Click me to disable for " + SEC + " secs");
        button.addActionListener(new ActionListener() {

            @Override
            public void actionPerformed(ActionEvent e) {
                JButton toDisable = (JButton) e.getSource();
                toDisable.setEnabled(false);
                stopwatch.start();
            }
        });
        add(button);
        stopwatch = new Timer(SEC * 1000, new MyTimerListener(button));
        stopwatch.setRepeats(false);
    }

    static class MyTimerListener implements ActionListener {
        JComponent target;

        public MyTimerListener(JComponent target) {
            this.target = target;
        }

        @Override
        public void actionPerformed(ActionEvent e) {
            target.setEnabled(true);
        }

    }

    public static void main(String[] args) {
        final JFrame myApp = new JFrame();
        myApp.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        myApp.setContentPane(new SwingDemo());
        myApp.pack();
        SwingUtilities.invokeLater(new Runnable() {

            @Override
            public void run() {
                myApp.setVisible(true);
            }
        });
    }
}

Answer 3

您可以使用Thread ， Task或更简单的Timer类。

Answer 4

you can use Thread.sleep(time in mil seconds)

ex: Thread.sleep(10000); // sleep for 10 seconds

JButton button = new JButton("Test");

    try {
        button.setEnabled(false);
        Thread.sleep(10000);
        button.setEnabled(true);
    } catch (InterruptedException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

but it must be in a separate thread or it will make all the GUI hang for 10 seconds.

you can post more details about the code and i can help