NAME
extcheck - jar conflict detection utility
SYNOPSIS
extcheck [ -verbose ] targetfile.jar
DESCRIPTION
The extcheck utility checks a specified Jar file for title
and version conflicts with any extensions installed in the
JDK software. Before installing an extension, you can use
this utility to see if the same or a more recent version of
the extension is already installed.
The extcheck utility compares the Specification-title and
Specification-version headers in the manifest of
targetfile.jar file against the corresponding headers in all
Jar files currently installed in the extension directory.
(The extension directory is jre/lib/ext by default.) The
extcheck utility compares version numbers in the same way as
the method java.lang.Package.isCompatibleWith.
If no conflict is detected, the return code is 0.
If the manifest of any of the jar file in the extensions
directory has the same Specification-title and the same or a
newer Specification-version number, a non-zero error code is
returned. A non-zero error code is also returned if
targetfile.jar does not have the Specification-title or
Specification-version attributes in its manifest.
OPTIONS
-verbose Lists Jar files in the extension directory as
they are checked. Additionally, manifest
attributes of the target jar file and any
conflicting jar files are also reported.
ATTRIBUTES
See attributes(5) for a description of the following attri-
butes:
__________________________________
| ATTRIBUTE TYPE| ATTRIBUTE VALUE|
|_______________|__________________|_
| Availability | SUNWjvdev |
|_______________|_________________|
SEE ALSO
jar(1)
|
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