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From "Jon Skeet" <>
Subject RE: Why stop at JDK1.2? Only semi-serious question...
Date Mon, 15 Jul 2002 18:21:32 GMT
> Does anyone know if you can turn asserts on on the fly or 
> not? I think the
> programmatic interface would let you do that; with a JMX 
> wrapper you could
> manage assertions on a running system. That would be slick. 
> Mind you, I need
> a way of doing that for log4j too.

Yes, you can, using various classloader methods (setDefaultAssertionStatus, setPackageAssertionStatus,
setClassAssertionStatus and clearAssertionStatus). 

However, I don't believe that can affect classes which have already been loaded (unless it
uses some foul reflection and *assumes* the form that the compiler puts in).


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