sending inbetween in observer

[Ty Karl]

Hi all,

1 I want to know how to send and integer to the observer,the int is the loop count
2I have notifyobservers in a loop? Is that ok?
EVENT SOURCE

For (int I = 0; I<23;I ++) {


setChanged();
notifyObservers( ??? I ??? );
}

HANDLER
private int resp;
public void update (Observable obj, Object arg)
{
if ( ?? how do I say instance of int so I can check it)
{
System.out.println("\HERE IS THE INTEGER VALUE: "+ resp );
}

[Rob Spoor]

1) Wrap the int in an Integer:

for (int i = 0; i < 23; i++)
{
    setChanged();
    notifyObservers(i); // using autoboxing in Java 5.0 and up
    // use notifyObservers(new Integer(i)); for Java 1.4 and lower
}

private int resp;

public void update (Observable obj, Object arg) 
{ 
    if (arg instanceof Integer)
    {
        resp = ((Integer)arg).intValue;
        System.out.println("\HERE IS THE INTEGER VALUE: "+ resp ); 
    }
}

2) notifying may take a long time, that's the only problem. And if you are executing your code from a synchronized block / method, you could get possible deadlock problems (read Effective Java to see how this is possible).


Not really Swing related, moving to beginner.

[Ty Karl]

thank you very much Rob, I will give it a bash. Sorry for posting on wrong forum