Google Guava

[Trenton]

I'm trying to figure out the EventBus from Google Guava Library. I would like to see an example of its use with regard to my task. In other words, couldn't you show an example of use?

Let's say I have a class in which there's this inner class listening class:

    private class StopScanButtonListener implements ActionListener {
    @Override
    public void actionPerformed(ActionEvent e) {
        try {
            portConnection.writeByte((byte) 0xFF);
            portConnection.writeByte((byte) 0x05);
            portConnection.writeByte((byte) 0xFF);
        } catch (SerialPortException | NullPointerException e1) {
            labelState.setText("Ошибка! Возможно вы не подключились к устройству!");
            labelState.repaint();
        }
    }
}

How can I put it on the tyre?

P.S. It would be even better if you had shown an example of a relative application. https://github.com/Faoxis/KatinDipsach/blob/master/GUI/src/main/java/com/faoxis/gui/MainWindow.java ♪ But for the example of the class above, I would also be very grateful.

[obi]

For starters, we need to create a class describing event:

public class TestEvent {
private final String message;

public TestEvent(String message) {
    this.message = message;
}

public String getMessage() {
    return message;
}

}

And the processor, the key here is the annotation. @Subscribewith her tire and she knows what kind of event we're gonna listen to:

public class EventListener {

@Subscribe

public void listen(TestEvent event) {

System.out.println(event.getMessage());

}

}

Then we need to initial a copy of EventBus somewhere in the annex, e.g. a publicly available static field in your main class:

public static final EventBus bus = new EventBus();

The following shall be registered:

bus.register(new EventListener());

Now, wherever you are, inside ActionListener for JButton, on call:

bus.post(new TestEvent("message"));

All the listeners of this kind of event, get it.