Name: ssT124754 Date: 03/02/2001


java version "1.3.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0-C)
Java HotSpot(TM) Client VM (build 1.3.0-C, mixed mode)

For some erronous jar-files, jar-tool does silently not extract anything.
It should at least report an error!
In comparison, WinZip (comandline-tool WZUNZIP) still extracts, but gives a
warning.

The following example uses jmf.jar (ok example) and mediaplayer.jar (problem
example) from JMF 2.1.

1) Do
"C:\Program Files\WinZip\WZUNZIP" -do jmf.jar meta-inf/Manifest.mf
As you see, this works with WZUNZIP (no error message)

2) Try
jar fx jmf.jar META-INF/manifest.mf
and it alsow works with the jar-tool.

3) But with some jar-files, WZUNZIP works, but the jar-tool not. Try
"C:\Program Files\WinZip\WZUNZIP" -do mediaplayer.jar meta-inf/Manifest.mf
this yields the following message:

  unzipping META-INF/MANIFEST.MF
  Warning: the size of the extracted file (3401) does not match the
uncompressed size (0) recorded in the zip file

but - IMPORTANT - it extracts the file !

4) Now, doing the same with the jar-tool, yields NO ERROR MESSAGE AND NO FILE
IS EXTRACTED !!!
jar fx mediaplayer.jar META-INF/manifest.mf

Thanks and bye, Stefan
(Review ID: 118008)
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