Re: Thread.wait()

I'm struggling getting my head around this for some reason today. I'm not
referring to things correctly i n my code, with respect to the threads -- I
must be misunderstanding you Gordon, because I am getting and
IllegalMonitorStateException when I call notify on the runnable, from, what
I believe, is the class that owns the Runnable, yes? I've pared down the
code here, but you can see what is going on. What am I missing? The thread
calling the notify IS the Event Dispatch thread, isn;t it? If not, how do I
obtain it from where I am at below? Thanks again -- I'm just dizzy from this
or something! -Ralph

Exception in thread "AWT-EventQueue-0"
java.lang.IllegalMonitorStateException: current thread not owner
        at java.lang.Object.notify(Native Method)
        at
robot.server.core.responder.SmartResponder.getGoBack(SmartResponder.java:411)

public class SmartResponder {
    public Runnable studyinteractive;
....
    public void doResponseStudy() {
        studyinteractive = new Runnable(){
            public void run(){
                study();
            };
        };
        javax.swing.SwingUtilities.invokeLater(studyinteractive);
    }
    public void study(){
        ...
                 try{
                    synchronized(this) {
                        while(getGoBack())
                            wait();
                    }
                }catch(InterruptedException interruptedexception) { }
    }
    public boolean getGoBack(){ //pared down here, b is actually a long
conditional, not merely what is shown
        boolean b= arrayList.size()>0;
        if(!b )
            studyinteractive.notify(); //// <-----------line 411
        return b;
    }