How to create a notification in swing

java user-interface swing notifications

32,761

Solution 1

You might need a translucent frame without decorations.

Quick demo

OSX

enter image description here ]

You can take advantage JLabel displays simple HTML

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.text.*;
import java.util.Date;
import java.lang.reflect.Method;
import java.lang.reflect.InvocationTargetException;


/**
 * Simple demo on how a translucent window
 * looks like when is used to display the system clock.
 * @author <a href="http://stackoverflow.com/users/20654/oscarryz">Oscar Reyes</a>
 */
class Translucent extends JPanel implements ActionListener {

    private static final SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
    private final Date now = new Date();
    private final Timer timer = new Timer(1000, this);
    private final JLabel text = new JLabel();

    public Translucent() {
        super(true);
        timer.start();
    }


    @Override
    public void actionPerformed(ActionEvent e) {
        now.setTime(System.currentTimeMillis());
        text.setText(String.format("<html><body><font size='50'>%s</font></body></html>",sdf.format(now)));
    }

    public static void main(String[] args) {

        JFrame f = new JFrame();
        f.setUndecorated(true);
        setTranslucency(f);
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.setBackground(new Color(0f, 0f, 0f, 1f / 3f));
        JPanel p =  new Translucent();
        JLabel l = new JLabel("Hola");
        l.setFont(new Font(l.getFont().getName(), Font.PLAIN, 128));
        p.add(l);
        f.add(p);
        f.pack();
        f.setLocationRelativeTo(null);
        f.setVisible(true);
    }
    // taken from: http://java.sun.com/developer/technicalArticles/GUI/translucent_shaped_windows/
    private static void setTranslucency( Window window){
        try {
               Class<?> awtUtilitiesClass = Class.forName("com.sun.awt.AWTUtilities");
               Method mSetWindowOpacity = awtUtilitiesClass.getMethod("setWindowOpacity", Window.class, float.class);
               if (!mSetWindowOpacity.isAccessible()) {
                   mSetWindowOpacity.setAccessible(true);
               }
               mSetWindowOpacity.invoke(null, window, Float.valueOf(0.75f));
            } catch (NoSuchMethodException ex) {
               ex.printStackTrace();
            } catch (SecurityException ex) {
               ex.printStackTrace();
            } catch (ClassNotFoundException ex) {
               ex.printStackTrace();
            } catch (IllegalAccessException ex) {
               ex.printStackTrace();
            } catch (IllegalArgumentException ex) {
               ex.printStackTrace();
            } catch (InvocationTargetException ex) {
               ex.printStackTrace();
            }
    }
}

Solution 2

A standard way to do it is to use Swing TrayIcon API. That would probably be the most convenient way too :)

Solution 3

I haven't used this, but JToaster looks like it might be a good match. Also, are you open to using SWT? This might give you some additional options (here's an example).

Solution 4

I highly recommend following library , it provides normal JFrame inside notification which gives full control .

http://jcarrierpigeon.sourceforge.net/

View more solutions

32,761

Author by

Jeremy

Updated on August 02, 2020

Comments

Jeremy almost 4 years

Using Java and Swing, is there any (convenient) way to create a notification? By notification, I mean something like:

,
_{(source: maketecheasier.com)}
, or
_{(source: microsoft.com)}

(Is there a more correct term for that?). It would be nice if it worked cross-platform, but I'm mainly concerned with it working under Ubuntu with Gnome. If at all possible, I would like to avoid having an icon in the system tray / notification area.

If all else fails, I could always use the sliding notification from Sliding Notification bar in java (a la Firefox)
Powerlord almost 14 years

At a guess, displayMessage will generate the style shown in the third screenshot. On Windows, at any rate.
Jeremy almost 14 years

On my system, that ends up looking like this: i.imgur.com/tfTkv.png (I was hoping for something closer to the native gnome notification)
Eugene Ryzhikov almost 14 years

It is possible to create custom notification window, but it would be less "convenient". Basically it involves creating a window with FocusListener such that window closes when it loses focus. Obviously you will be able to do your own panting. For animation effects I would suggest Trident library found at kenai.com/projects/trident/pages/Home
OscarRyz almost 14 years

@Jeremy, you probably just need to work more with swing, it is very powerful ( when you get to know it, which btw, may take a while )
Jeremy almost 14 years

That's the nicest looking thing I've seen so far, so I'll go with it (-: It's too bad that there isn't (as far as I know) a way to use the native notifications from swing.
kazanaki over 11 years

Java supports this now natively. docs.oracle.com/javase/tutorial/uiswing/misc/…
giantas over 6 years

broken links @OscarRyz