m (Esteban Aliverti)
2. Re: Exception using persistence (alan.gai...@tessella.com)
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Message: 1
Date: Tue, 8 Jun 2010 09:25:47 -0300
From: Esteban Aliverti
Subject: Re: [rules-users] Multiple Object Referencing problem
To:
Look at the line 58 of RulesTest class and you will find the problem. Try to
always analyse the stacktrace if there are no drools classes involved, then
it is not a Drools error. And remember, the debugger is your friend ;)
Best,
2010/6/7 David Sinclair
> This has nothing to do with Drools. It
This has nothing to do with Drools. It looks like you are giving Writer bad
input perhaps??
Exception in thread "main" *java.lang.NullPointerException*
at java.io.Writer.write(Unknown Source)
at com.org.RulesTest.main(*RulesTest.java:58*)
2010/6/7 Fnu Mahalakshmi
> Hi,
>
>
>
>
Hi,
I am trying out this example from the book :
public class Room {
private String name
// getter and setter methods here
}
public classs Sprinkler {
private Room room;
private boolean on;
// getter and setter methods here
}
public class Fire {
private Room room
