| mfang | f2cf006 | 2015-07-15 12:12:46 -0700 | [diff] [blame] | 1 | '\" t |
| 2 | .\" Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved. |
| 3 | .\" DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | .\" |
| 5 | .\" This code is free software; you can redistribute it and/or modify it |
| 6 | .\" under the terms of the GNU General Public License version 2 only, as |
| 7 | .\" published by the Free Software Foundation. |
| 8 | .\" |
| 9 | .\" This code is distributed in the hope that it will be useful, but WITHOUT |
| 10 | .\" ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | .\" FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | .\" version 2 for more details (a copy is included in the LICENSE file that |
| 13 | .\" accompanied this code). |
| 14 | .\" |
| 15 | .\" You should have received a copy of the GNU General Public License version |
| 16 | .\" 2 along with this work; if not, write to the Free Software Foundation, |
| 17 | .\" Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | .\" |
| 19 | .\" Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| 20 | .\" or visit www.oracle.com if you need additional information or have any |
| 21 | .\" questions. |
| 22 | .\" |
| 23 | .\" Arch: generic |
| 24 | .\" Software: JDK 8 |
| 25 | .\" Date: 21 November 2013 |
| 26 | .\" SectDesc: Basic Tools |
| 27 | .\" Title: extcheck.1 |
| 28 | .\" |
| 29 | .if n .pl 99999 |
| 30 | .TH extcheck 1 "21 November 2013" "JDK 8" "Basic Tools" |
| 31 | .\" ----------------------------------------------------------------- |
| 32 | .\" * Define some portability stuff |
| 33 | .\" ----------------------------------------------------------------- |
| 34 | .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 35 | .\" http://bugs.debian.org/507673 |
| 36 | .\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html |
| 37 | .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 38 | .ie \n(.g .ds Aq \(aq |
| 39 | .el .ds Aq ' |
| 40 | .\" ----------------------------------------------------------------- |
| 41 | .\" * set default formatting |
| 42 | .\" ----------------------------------------------------------------- |
| 43 | .\" disable hyphenation |
| 44 | .nh |
| 45 | .\" disable justification (adjust text to left margin only) |
| 46 | .ad l |
| 47 | .\" ----------------------------------------------------------------- |
| 48 | .\" * MAIN CONTENT STARTS HERE * |
| 49 | .\" ----------------------------------------------------------------- |
| 50 | |
| 51 | .SH NAME |
| 52 | extcheck \- Detects version conflicts between a target Java Archive (JAR) file and currently installed extension JAR files\&. |
| 53 | .SH SYNOPSIS |
| 54 | .sp |
| 55 | .nf |
| 56 | |
| 57 | \fBextcheck\fR [\fIoptions\fR] \fItargetfile\&.jar\fR |
| 58 | .fi |
| 59 | .sp |
| 60 | .TP |
| 61 | \fIoptions\fR |
| 62 | The command-line options\&. See Options\&. |
| 63 | .TP |
| 64 | \fItargetfile\&.jar\fR |
| 65 | The target JAR file against which the currently installed extension JAR files are compared to detect version conflicts\&. |
| 66 | .SH DESCRIPTION |
| 67 | The \f3extcheck\fR command checks a specified JAR file for title and version conflicts with any extensions installed in the Java SE SDK\&. Before installing an extension, you can use this utility to see whether the same or a more recent version of the extension is already installed\&. |
| 68 | .PP |
| 69 | The \f3extcheck\fR command compares the Specification-title and Specification-version headers in the manifest of the \f3targetfile\&.jar\fR file against the corresponding headers in all JAR files currently installed in the extension directory\&. By default, the extension directory is \f3jre/lib/ext\fR on Oracle Solaris and \f3\ejre\elib\eext\fR on Windows\&. The \f3extcheck\fR command compares version numbers in the same way as the \f3java\&.lang\&.Package\&.isCompatibleWith\fR method\&. |
| 70 | .PP |
| 71 | If no conflict is detected, then the return code is 0\&. |
| 72 | .PP |
| 73 | If the manifest of any JAR file in the extensions directory has the same \f3Specification-title\fR and the same or a newer \f3Specification-version\fR number, then a non-zero error code is returned\&. A non-zero error code is also returned when \f3targetfile\&.jar\fR does not have the \f3Specification-title\fR or \f3Specification-version\fR attributes in its manifest file\&. |
| 74 | .SH OPTIONS |
| 75 | .TP |
| 76 | -verbose |
| 77 | .br |
| 78 | 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\&. |
| 79 | .TP |
| 80 | -J\fIoption\fR |
| 81 | .br |
| 82 | Passes \fIoption\fR to the Java Virtual Machine (JVM), where option is one of the options described on the reference page for the Java launcher\&. For example, \f3-J-Xms48m\fR sets the startup memory to 48 MB\&. See java(1)\&. |
| 83 | .SH SEE\ ALSO |
| 84 | .TP 0.2i |
| 85 | \(bu |
| 86 | jar(1) |
| 87 | .RE |
| 88 | .br |
| 89 | 'pl 8.5i |
| 90 | 'bp |