Bug in JavaBlock (or in JavaBlock documentation)
- To: mathgroup at smc.vnet.net
- Subject: [mg56211] Bug in JavaBlock (or in JavaBlock documentation)
- From: "J. McKenzie Alexander" <jalex at lse.ac.uk>
- Date: Tue, 19 Apr 2005 04:55:18 -0400 (EDT)
- References: <200504180708.DAA20033@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
I think this is a bug in JavaBlock, but it could merely be a mistake in
The docs for JavaBlock state: "JavaBlock[expr] causes all new Java
objects returned to Mathematica during
the evaluation of expr to be released when expr finishes." However, if
you evaluate the following:
You'll see that the list of objects returned by PeekObjects contains
exactly one object - the JProgressBar created by the one call to
JavaNew, in which case it's not true that "all new Java objects
returned to Mathematica during the evaluation of expr [are] released
when expr finishes".
FWIW, I'd prefer JavaBlock behave the way it's described in the docs,
since then one doesn't have to worry about the odd exception generated
by having expr return a Java object instead of some other value.
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