Hi!

I have a singleton class that operates on a Tomcat server.  When I
start Tomcat, everything is fine, I have only one instance of the
class.  But, if I modify the web.xml file, per example, and the context
is stopped then restarted, the instance I had in the first place isn't
destroyed and continues to run, and another singleton is created when I
call the getInstance() method of the singleton.  How do I fix that?

Here are some excerpts of my class:

public class ConnectionPool {

private static ConnectionPool instance = null;
.
.
.
public synchronized static ConnectionPool getInstance()
                         throws SQLException, ClassNotFoundException {
         if (instance == null){
             instance = new
ConnectionPool(m_driverName,m_dbURL,m_user,m_password);
         }
         return instance;
}
.
.
.
};

Thanks!