About Observer pattern
[165 byte] By [yuanmengyuan2a] at [2007-9-28 9:13:47] 
Who has the experience with java.util.Observer and java.util.Observable ? Or Please help with 2nd parameter of method update(Observable o,Object arg)?
If you read the API docs you'd see that the 2rd parameter is the message or event that has occurred. The first parameter is the source (i.e. the thing being observed); the 2nd parameter is the event (i.e. what happened).
larsonaa at 2007-7-11 22:09:53 >
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