[GridSim-users] question on demo of regional gis

[ye h. <hua...@gm...>]

Hi, dear all:

I just encountered a problem while using RegionalGIS recently. Within  
RegionalGIS demo of GridSimDemo, I tried to decrease the "num_GIS",  
(class: ExampleGIS, line 41).

I was prompted the following error when I decreased its value to 1. It  
seems if I need to utilize RegtionalGIS, I should generate at least  
two regionalGIS, even one of it is empty, right?

Thanks!
Best
ye

Exception in thread "Thread-49" java.lang.NullPointerException
	at RegionalGIS.NetUserGIS.body(NetUserGIS.java:108)
	at eduni.simjava.Sim_entity.run(Sim_entity.java:603)
Exception in thread "Thread-53" Exception in thread "Thread-52"  
Exception in thread "Thread-54" java.lang.NullPointerException
	at gridsim.net.RIPRouter.dequeue(Unknown Source)
	at gridsim.net.RIPRouter.processInternalEvent(Unknown Source)
	at gridsim.net.RIPRouter.processEvent(Unknown Source)
	at gridsim.net.Router.body(Unknown Source)
	at eduni.simjava.Sim_entity.run(Sim_entity.java:603)
java.lang.NullPointerException
	at gridsim.net.RIPRouter.dequeue(Unknown Source)
	at gridsim.net.RIPRouter.processInternalEvent(Unknown Source)
	at gridsim.net.RIPRouter.processEvent(Unknown Source)
	at gridsim.net.Router.body(Unknown Source)
	at eduni.simjava.Sim_entity.run(Sim_entity.java:603)
java.lang.NullPointerException
	at gridsim.net.RIPRouter.dequeue(Unknown Source)
	at gridsim.net.RIPRouter.processInternalEvent(Unknown Source)
	at gridsim.net.RIPRouter.processEvent(Unknown Source)
	at gridsim.net.Router.body(Unknown Source)
	at eduni.simjava.Sim_entity.run(Sim_entity.java:603)