[Pljava-dev] static variables

I've been starting to use pljava and find it very useful, but there's
something I want to know if it's possible. I want to have a static
variable that I can set and retrieve during a session. Something like
this:

public static String x;

public static String test() {
if (x==null) {
return "";
}
return x;
}

public static String testString(String me) {
x=me;
return me;
}

This is a trivial example, but what I want to do on the long run is to
setup a XML parser once (per session) and to avoid the overhead for
each calling of the function. Is it possible?

Thanks a lot,

Andres