Name: jl125535			Date: 09/22/2004


A DESCRIPTION OF THE REQUEST :
When java.util.zip.ZipFile parses a corrupt jar or zip file, a typical result is an error message like the one below.  It would be more helpful if the error message stated that the jar or zip file appears to be corrupt.

<ERROR_MESSAGE>
An exception has occurred in the compiler (1.5.0-rc). Please file a bug at the Java Developer Connection (http://java.sun.com/webapps/bugreport)  after checking the Bug Parade for duplicates. Include your program and the following diagnostic in your report.  Thank you.
java.lang.InternalError: jzentry == 0,
 jzfile = 74342920,
 total = 212,
 name = Q:\projects\3rdparty\antlr-2.7.4\antlr.jar,
 i = 1,
 message = couldn't read CEN extra
	at java.util.zip.ZipFile$3.nextElement(ZipFile.java:427)
	at java.util.zip.ZipFile$3.nextElement(ZipFile.java:413)
	at com.sun.tools.javac.jvm.ClassReader.openArchive(ClassReader.java:1442)
...
</ERROR_MESSAGE>


JUSTIFICATION :
The current error message implies that the best course of action is to submit a bug report.  But as evidenced by the Evaluation of http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4977607, it is faster and more effective to replace the offending file.
(Incident Review ID: 311444) 
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