I found this from an article. Can anyone explain me this line "This doesn't
work at all when static variables are involved since the special class
loader..........."
Resource URL: http://wackyhtml.com/columns/connection_pool.html
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Class loader considerations
Most Servlet Engines use a special class loader for Servlets to be able to
automatically reload a Servlet when it is modified. This class loader
handles all class files located in a special directory, typically named
servlets. A common mistake among new Servlet developers is to also put
helper classes, such as the connection pool classes described here, in the
servlets directory. This doesn't work at all when static variables are
involved since the special class loader creates a separate class instance
for each Servlet. To avoid this problem you should place all helper classes
in the regular CLASSPATH used by the Servlet Engine. How you set the
CLASSPATH varies between Servlet Engines so read the documentation for the
product you use.
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