|
|
This manual page is part of Xcode Tools version 3.2.2To obtain these tools:
If you are running a version of Xcode Tools other than 3.2.2, view the documentation locally:
Reading manual pagesManual pages are intended as a quick reference for people who already understand a technology.
|
extcheck(1) extcheck(1)
NAME
extcheck - jar conflict detection utility
SYNOPSIS
extcheck [ -verbose ] [ -Joption ] 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 mani-fest manifest
fest 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 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-ver-sion Specification-version
sion attributes in its manifest.
OPTIONS
The following options are supported:
-verbose Lists jar files in the extension directory as they are checked. Additionally, mani-fest manifest
fest attributes of the target jar file and any conflicting jar files are also
reported.
-Joption Pass option to the Java virtual machine, where option is one of the options described
on the man page for the java application launcher, java(1). For example, -J-Xms48m
sets the startup memory to 48 megabytes.
SEE ALSO
jar(1)
13 June 2000 extcheck(1)
|
The way to report a problem with this manual page depends on the type of problem: