Question

The problem is as in question.

I read the example so many times already, but I still can’t bring it to work.

The idea is to write an Event in Java and write a callback for MATLAB.

First I wrote my event class: package.EventTest.
Then I built it and in added the path with this classes to javaclasspath.

Then in matlab I execute:

evt = package.EventTest
set(evt,'TestEventCallback',@(h,e)disp(h))
evt.notifyMyTest

after line “evt.notifyMyTest” it should display something, but comes nothing.
I used a debugger and as it comes to function “notifyMyTest” I see that the vector with listeners is empty. So it can’t show anything. What do I do wrong?
Does this line “set(evt,’TestEventCallback’,@(h,e)disp(h))” have to add listener to this vector?

Or maybe there is another one possibility to challenge it?

Thanks in advance,
Lex

UPD: My Java class in package “package” (example):

public class EventTest {

    private java.util.Vector data = new java.util.Vector();
    public synchronized void addMyTestListener(MyTestListener lis) {
        data.addElement(lis);
    }
    public synchronized void removeMyTestListener(MyTestListener lis) {
        data.removeElement(lis);
    }
    public interface MyTestListener extends java.util.EventListener {
        void testEvent(MyTestEvent event);
    }
    public class MyTestEvent extends java.util.EventObject {
        private static final long serialVersionUID = 1L;
        public float oldValue,newValue;        
        MyTestEvent(Object obj, float oldValue, float newValue) {
            super(obj);
            this.oldValue = oldValue;
            this.newValue = newValue;
        }
    }
    public void notifyMyTest() {
        java.util.Vector dataCopy;
        synchronized(this) {
            dataCopy = (java.util.Vector)data.clone();
        }
        for (int i=0; i<dataCopy.size(); i++) {
            MyTestEvent event = new MyTestEvent(this, 0, 1);
        ((MyTestListener)dataCopy.elementAt(i)).testEvent(event);
        }
    }
}

Answer 1

I think, I found another way to do what I want.
Now I use PropertyChangeSupport and PropertzChangeListener.

In Matlab I add

‘PropertyChangeCallback’

Then from Java-code I send

firePropertyChange(“Property”, oldValue, newValue)

And my Matlab code is notified.

Looks like it’s working