Re: Nuevos Eventos

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#26210

From: Jonathan Revusky
Date: Fri, 29 Jan 1999 00:00

32 lines
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Rehm wrote:
> 
> �Cual es la diferencia entre (1) y (2)?. Para que clonar.
> 
> (1)   Enumeration enum = listeners.clone().elements();
> (2)   Enumeration enum = listeners.elements();

El motivo ser�a para que el c�digo sea "thread-safe". Admites la
posibilidad de que en otro hilo de ejecuci�n, se agrega un listener,
mientras est�s dentro del m�todo fireXXXEvent.

De hecho, propiamente hablando (incluso si el caso es raro) es:

Enumeration enum;
synchronized (listeners) {
   enum = listeners.clone().elements();   
}

while enum.hasMoreElements() {
  etcetera.
}

El c�digo que es "thread-safe" es el esquema m�s generalizado.

Jonathan Revusky
-- 
Java and Delphi Consulting
Make your .class files double-clickable
with SmartJ
http://www.bigfoot.com/~crystalline.solutions

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From: Jonathan Revusky <jrevusky@jet.es>
Subject: Re: Nuevos Eventos
Date: 1999/01/29
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