Kent Kurima wrote:
>
> When I try to remove some information from the session I get a
> ConcurrentModificationException error.
>
> tomcat 3.X did not have this problem, but tomcat 4.X is complaining about
> this.
>
> here is a section of code that is having the problem
>
> java.util.Enumeration sessionNames = session.getAttributeNames();
> while(sessionNames.hasMoreElements()){
> String lstrSessionName = (String)sessionNames.nextElement();
> if (!lvecTempVar.contains(lstrSessionName)) {
> session.removeAttribute(lstrSessionName);
> }
Hi Kent,
Probably, another servlet instance is accessing that attr. of the
session; you have to synchronize access to it:
while(sessionNames.hasMoreElements()){
String lstrSessionName = (String)sessionNames.nextElement();
if (!lvecTempVar.contains(lstrSessionName)) {
synchronized (session) {
session.removeAttribute(lstrSessionName);
}
}
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