| 1 | <!--
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| 2 | Licensed to the Apache Software Foundation (ASF) under one or more
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| 5 | The ASF licenses this file to You under the Apache License, Version 2.0
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| 6 | (the "License"); you may not use this file except in compliance with
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| 9 | http://www.apache.org/licenses/LICENSE-2.0
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| 10 |
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| 11 | Unless required by applicable law or agreed to in writing, software
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| 12 | distributed under the License is distributed on an "AS IS" BASIS,
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| 13 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 14 | See the License for the specific language governing permissions and
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| 15 | limitations under the License.
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| 16 | -->
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| 17 | <html>
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| 18 |
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| 19 | <head>
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| 20 | <meta http-equiv="Content-Language" content="en-us">
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| 21 | <link rel="stylesheet" type="text/css" href="../stylesheets/style.css">
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| 22 | <title>Jar Task</title>
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| 23 | </head>
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| 24 |
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| 25 | <body>
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| 26 |
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| 27 | <h2><a name="jar">Jar</a></h2>
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| 28 | <h3>Description</h3>
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| 29 | <p>Jars a set of files.</p>
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| 30 | <p>The <i>basedir</i> attribute is the reference directory from where to jar.</p>
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| 31 | <p>Note that file permissions will not be stored in the resulting jarfile.</p>
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| 32 | <p>It is possible to refine the set of files that are being jarred. This can be
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| 33 | done with the <i>includes</i>, <i>includesfile</i>, <i>excludes</i>, <i>excludesfile</i> and <i>defaultexcludes</i>
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| 34 | attributes. With the <i>includes</i> or <i>includesfile</i> attribute you specify the files you want to
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| 35 | have included by using patterns. The <i>exclude</i> or <i>excludesfile</i> attribute is used to specify
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| 36 | the files you want to have excluded. This is also done with patterns. And
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| 37 | finally with the <i>defaultexcludes</i> attribute, you can specify whether you
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| 38 | want to use default exclusions or not. See the section on <a
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| 39 | href="../dirtasks.html#directorybasedtasks">directory based tasks</a>, on how the
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| 40 | inclusion/exclusion of files works, and how to write patterns.</p>
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| 41 | <p>This task forms an implicit <a href="../CoreTypes/fileset.html">FileSet</a> and
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| 42 | supports all attributes of <code><fileset></code>
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| 43 | (<code>dir</code> becomes <code>basedir</code>) as well as the nested
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| 44 | <code><include></code>, <code><exclude></code> and
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| 45 | <code><patternset></code> elements.</p>
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| 46 | <p>You can also use nested file sets for more flexibility, and specify
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| 47 | multiple ones to merge together different trees of files into one JAR.
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| 48 | The extended fileset and groupfileset child elements from the zip task are
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| 49 | also available in the jar task.
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| 50 | See the <a href="zip.html">Zip</a> task for more details and examples.</p>
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| 51 | <p>If the manifest is omitted, a simple one will be supplied by Ant.</p>
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| 52 |
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| 53 | <p>The <code>update</code> parameter controls what happens if the JAR
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| 54 | file already exists. When set to <code>yes</code>, the JAR file is
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| 55 | updated with the files specified. When set to <code>no</code> (the
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| 56 | default) the JAR file is overwritten. An example use of this is
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| 57 | provided in the <a href="zip.html">Zip task documentation</a>. Please
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| 58 | note that ZIP files store file modification times with a granularity
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| 59 | of two seconds. If a file is less than two seconds newer than the
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| 60 | entry in the archive, Ant will not consider it newer.</p>
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| 61 |
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| 62 | <p>The <code>whenmanifestonly</code> parameter controls what happens when no
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| 63 | files, apart from the manifest file, or nested services, match.
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| 64 | If <code>skip</code>, the JAR is not created and a warning is issued.
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| 65 | If <code>fail</code>, the JAR is not created and the build is halted with an error.
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| 66 | If <code>create</code>, (default) an empty JAR file (only containing a manifest and services)
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| 67 | is created.</p>
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| 68 |
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| 69 | <p>(The Jar task is a shortcut for specifying the manifest file of a JAR file.
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| 70 | The same thing can be accomplished by using the <i>fullpath</i>
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| 71 | attribute of a zipfileset in a Zip task. The one difference is that if the
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| 72 | <i>manifest</i> attribute is not specified, the Jar task will
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| 73 | include an empty one for you.)</p>
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| 74 |
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| 75 | <p>Manifests are processed by the Jar task according to the
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| 76 | <a href="http://java.sun.com/j2se/1.3/docs/guide/jar/jar.html">Jar file specification.</a>
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| 77 | Note in particular that this may result in manifest lines greater than 72 bytes
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| 78 | being wrapped and continued on the next line.
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| 79 | </p>
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| 80 |
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| 81 | <p><b>Please note that the zip format allows multiple files of the same
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| 82 | fully-qualified name to exist within a single archive. This has been
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| 83 | documented as causing various problems for unsuspecting users. If you wish
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| 84 | to avoid this behavior you must set the <code>duplicate</code> attribute
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| 85 | to a value other than its default, <code>"add"</code>.</b></p>
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| 86 |
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| 87 | <h3>Parameters</h3>
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| 88 | <table border="1" cellpadding="2" cellspacing="0">
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| 89 | <tr>
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| 90 | <td valign="top"><b>Attribute</b></td>
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| 91 | <td valign="top"><b>Description</b></td>
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| 92 | <td align="center" valign="top"><b>Required</b></td>
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| 93 | </tr>
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| 94 | <tr>
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| 95 | <td valign="top">destfile</td>
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| 96 | <td valign="top">the JAR file to create.</td>
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| 97 | <td valign="top" align="center">Yes</td>
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| 98 | </tr>
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| 99 | <tr>
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| 100 | <td valign="top">basedir</td>
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| 101 | <td valign="top">the directory from which to jar the files.</td>
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| 102 | <td valign="top" align="center">No</td>
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| 103 | </tr>
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| 104 | <tr>
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| 105 | <td valign="top">compress</td>
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| 106 | <td valign="top">Not only store data but also compress them,
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| 107 | defaults to true. Unless you set the <em>keepcompression</em>
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| 108 | attribute to false, this will apply to the entire archive, not
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| 109 | only the files you've added while updating.</td>
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| 110 | <td align="center" valign="top">No</td>
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| 111 | </tr>
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| 112 | <tr>
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| 113 | <td valign="top">keepcompression</td>
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| 114 | <td valign="top">For entries coming from existing archives (like
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| 115 | nested <em>zipfileset</em>s or while updating the archive), keep
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| 116 | the compression as it has been originally instead of using the
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| 117 | <em>compress</em> attribute. Defaults false. <em>Since Ant
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| 118 | 1.6</em></td>
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| 119 | <td align="center" valign="top">No</td>
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| 120 | </tr>
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| 121 | <tr>
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| 122 | <td valign="top">encoding</td>
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| 123 | <td valign="top">The character encoding to use for filenames
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| 124 | inside the archive. Defaults to UTF8. <strong>It is not
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| 125 | recommended to change this value as the created archive will most
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| 126 | likely be unreadable for Java otherwise.</strong></td>
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| 127 | <td align="center" valign="top">No</td>
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| 128 | </tr>
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| 129 | <tr>
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| 130 | <td valign="top">filesonly</td>
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| 131 | <td valign="top">Store only file entries, defaults to false</td>
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| 132 | <td align="center" valign="top">No</td>
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| 133 | </tr>
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| 134 | <tr>
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| 135 | <td valign="top">includes</td>
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| 136 | <td valign="top">comma- or space-separated list of patterns of files that must be
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| 137 | included. All files are included when omitted.</td>
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| 138 | <td valign="top" align="center">No</td>
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| 139 | </tr>
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| 140 | <tr>
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| 141 | <td valign="top">includesfile</td>
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| 142 | <td valign="top">the name of a file. Each line of this file is
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| 143 | taken to be an include pattern</td>
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| 144 | <td valign="top" align="center">No</td>
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| 145 | </tr>
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| 146 | <tr>
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| 147 | <td valign="top">excludes</td>
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| 148 | <td valign="top">comma- or space-separated list of patterns of files that must be
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| 149 | excluded. No files (except default excludes) are excluded when omitted.</td>
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| 150 | <td valign="top" align="center">No</td>
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| 151 | </tr>
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| 152 | <tr>
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| 153 | <td valign="top">excludesfile</td>
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| 154 | <td valign="top">the name of a file. Each line of this file is
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| 155 | taken to be an exclude pattern</td>
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| 156 | <td valign="top" align="center">No</td>
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| 157 | </tr>
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| 158 | <tr>
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| 159 | <td valign="top">defaultexcludes</td>
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| 160 | <td valign="top">indicates whether default excludes should be used or not
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| 161 | ("yes"/"no"). Default excludes are used when omitted.</td>
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| 162 | <td valign="top" align="center">No</td>
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| 163 | </tr>
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| 164 | <tr>
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| 165 | <td valign="top">manifest</td>
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| 166 | <td valign="top">the manifest file to use. This can be either the location of a manifest, or the name of a jar added through a fileset. If its the name of an added jar, the task expects the manifest to be in the jar at META-INF/MANIFEST.MF</td>
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| 167 | <td valign="top" align="center">No</td>
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| 168 | </tr>
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| 169 | <tr>
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| 170 | <td valign="top">filesetmanifest</td>
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| 171 | <td valign="top">behavior when a Manifest is found in a zipfileset or zipgroupfileset file is found. Valid values are "skip", "merge", and "mergewithoutmain". "merge" will merge all of the manifests together, and merge this into any other specified manifests. "mergewithoutmain" merges everything but the Main section of the manifests. Default value is "skip".
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| 172 | </td>
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| 173 | <td valign="top" align="center">No</td>
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| 174 | </tr>
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| 175 | <tr>
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| 176 | <td valign="top">update</td>
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| 177 | <td valign="top">indicates whether to update or overwrite
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| 178 | the destination file if it already exists. Default is "false".</td>
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| 179 | <td valign="top" align="center">No</td>
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| 180 | </tr>
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| 181 | <tr>
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| 182 | <td valign="top">whenmanifestonly</td>
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| 183 | <td valign="top">behavior when no files match. Valid values are "fail", "skip", and "create". Default is "create".</td>
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| 184 | <td valign="top" align="center">No</td>
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| 185 | </tr>
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| 186 | <tr>
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| 187 | <td valign="top">duplicate</td>
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| 188 | <td valign="top">behavior when a duplicate file is found. Valid values are "add", "preserve", and "fail". The default value is "add". </td>
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| 189 | <td valign="top" align="center">No</td>
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| 190 | </tr>
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| 191 | <tr>
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| 192 | <td valign="top">index</td>
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| 193 | <td valign="top">whether to create an <A
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| 194 | HREF="http://java.sun.com/j2se/1.3/docs/guide/jar/jar.html#JAR%20Index">index
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| 195 | list</A> to speed up classloading. This is a JDK 1.3+ specific
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| 196 | feature. Unless you specify additional jars with nested <a
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| 197 | href="#indexjars"><code>indexjars</code></a> elements, only the
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| 198 | contents of this jar will be included in the index. Defaults to
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| 199 | false.</td>
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| 200 | <td valign="top" align="center">No</td>
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| 201 | </tr>
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| 202 | <tr>
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| 203 | <td valign="top">manifestencoding</td>
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| 204 | <td valign="top">The encoding used to read the JAR manifest, when a manifest file is specified.</td>
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| 205 | <td valign="top" align="center">No, defaults to the platform encoding.</td>
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| 206 | </tr>
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| 207 | <tr>
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| 208 | <td valign="top">roundup</td>
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| 209 | <td valign="top">Whether the file modification times will be
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| 210 | rounded up to the next even number of seconds.<br>
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| 211 | Zip archives store file modification times with a granularity of
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| 212 | two seconds, so the times will either be rounded up or down. If
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| 213 | you round down, the archive will always seem out-of-date when you
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| 214 | rerun the task, so the default is to round up. Rounding up may
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| 215 | lead to a different type of problems like JSPs inside a web
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| 216 | archive that seem to be slightly more recent than precompiled
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| 217 | pages, rendering precompilation useless.<br>
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| 218 | Defaults to true. <em>Since Ant 1.6.2</em></td>
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| 219 | <td align="center" valign="top">No</td>
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| 220 | </tr>
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| 221 | <tr>
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| 222 | <td valign="top">level</td>
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| 223 | <td valign="top">Non-default level at which file compression should be
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| 224 | performed. Valid values range from 0 (no compression/fastest) to 9
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| 225 | (maximum compression/slowest). <em>Since Ant 1.7</em></td>
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| 226 | <td valign="top" align="center">No</td>
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| 227 | </tr>
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| 228 | </table>
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| 229 |
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| 230 | <h3>Nested elements</h3>
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| 231 | <h4>metainf</h4>
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| 232 | <p>The nested <code>metainf</code> element specifies a <a
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| 233 | href="../CoreTypes/fileset.html">FileSet</a>. All files included in this fileset will
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| 234 | end up in the <code>META-INF</code> directory of the jar file. If this
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| 235 | fileset includes a file named <code>MANIFEST.MF</code>, the file is
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| 236 | ignored and you will get a warning.</p>
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| 237 |
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| 238 | <h4>manifest</h4>
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| 239 | <p>The manifest nested element allows the manifest for the Jar file to
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| 240 | be provided inline in the build file rather than in an external
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| 241 | file. This element is identical to the
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| 242 | <a href="manifest.html">manifest</a> task, but the file and mode
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| 243 | attributes must be omitted.</p>
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| 244 | <p>
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| 245 | If both an inline manifest and an external file are both specified, the
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| 246 | manifests are merged.
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| 247 | </p>
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| 248 |
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| 249 | <p>When using inline manifests, the Jar task will check whether the manifest
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| 250 | contents have changed (i.e. the manifest as specified is different in any way
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| 251 | from the manifest that exists in the Jar, if it exists.
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| 252 | If the manifest values have changed the jar will be updated or rebuilt, as
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| 253 | appropriate.
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| 254 | </p>
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| 255 |
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| 256 | <a name="indexjars"><h4>indexjars</h4></a>
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| 257 |
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| 258 | <p><em>since ant 1.6.2</em></p>
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| 259 |
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| 260 | <p>The nested <code>indexjars</code> element specifies a <a
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| 261 | href="../using.html#path">PATH like structure</a>. Its content is
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| 262 | completely ignored unless you set the index attribute of the task to
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| 263 | true.</p>
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| 264 |
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| 265 | <p>The index created by this task will contain indices for the
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| 266 | archives contained in this path, the names used for the archioves
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| 267 | depend on your manifest:</p>
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| 268 | <ul>
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| 269 | <li>If the generated jar's manifest contains no Class-Path
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| 270 | attribute, the file name without any leading directory path will be
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| 271 | used and all parts of the path will get indexed.</li>
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| 272 | <li>If the manifest contains a Class-Path attribute, this task will
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| 273 | try to guess which part of the Class-Path belongs to a given
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| 274 | archive. If it cannot guess a name, the archive will be skipped,
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| 275 | otherwise tha name listed inside the Class-PAth attribute will be
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| 276 | used.</li>
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| 277 | </ul>
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| 278 |
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| 279 | <p>This task will not create any index entries for archives that are
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| 280 | empty or only contain files inside the META-INF directory.</p>
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| 281 | <a name="service"><h4>service</h4></a>
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| 282 |
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| 283 | <p><em>since ant 1.7.0</em></p>
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| 284 |
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| 285 | <p>
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| 286 | The nested <code>service</code> element specifies a service.
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| 287 | Services are described by
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| 288 | <a href="http://java.sun.com/j2se/1.5.0/docs/guide/jar/jar.html#Service%20Provider">http://java.sun.com/j2se/1.5.0/docs/guide/jar/jar.html#Service%20Provider</a>.
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| 289 | The approach is to have providers JARs include files named by the service
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| 290 | provided, for example,
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| 291 | META-INF/services/javax.script.ScriptEngineFactory
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| 292 | which can include implementation class names, one per line (usually just one per JAR).
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| 293 |
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| 294 | The name of the
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| 295 | service is set by the "type" attribute. The classname implementing
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| 296 | the service is the the "provider" attribute, or it one wants to
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| 297 | specify a number of classes that implement the service, by
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| 298 | "provider" nested elements.
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| 299 | </p>
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| 300 | <p>
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| 301 | <table border="1" cellpadding="2" cellspacing="0">
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| 302 | <tr>
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| 303 | <td valign="top"><b>Attribute</b></td>
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| 304 | <td valign="top"><b>Description</b></td>
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| 305 | <td align="center" valign="top"><b>Required</b></td>
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| 306 | </tr>
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| 307 | <tr>
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| 308 | <td valign="top">type</td>
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| 309 | <td valign="top">The name of the service.</td>
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| 310 | <td valign="top" align="center">Yes</td>
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| 311 | </tr>
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| 312 | <tr>
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| 313 | <td valign="top">provider</td>
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| 314 | <td valign="top">
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| 315 | The classname of the class implemening the service.
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| 316 | </td>
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| 317 | <td valign="top" align="center">Yes, unless there is a nested
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| 318 | <code><provider></code> element.</td>
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| 319 | </tr>
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| 320 | </table>
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| 321 | <p>
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| 322 | The provider classname is specified either by the "provider" attribute, or
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| 323 | by a nested <provider> element, which has a single "classname" attribute.
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| 324 | If a JAR file has more that one implementation of the service, a number of
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| 325 | nested <provider> elements may be used.
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| 326 | </p>
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| 327 | <h3>Examples</h3>
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| 328 | <pre> <jar destfile="${dist}/lib/app.jar" basedir="${build}/classes"/></pre>
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| 329 | <p>jars all files in the <code>${build}/classes</code> directory into a file
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| 330 | called <code>app.jar</code> in the <code>${dist}/lib</code> directory.</p>
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| 331 | <pre> <jar destfile="${dist}/lib/app.jar"
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| 332 | basedir="${build}/classes"
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| 333 | excludes="**/Test.class"
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| 334 | /></pre>
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| 335 | <p>jars all files in the <code>${build}/classes</code> directory into a file
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| 336 | called <code>app.jar</code> in the <code>${dist}/lib</code> directory. Files
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| 337 | with the name <code>Test.class</code> are excluded.</p>
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| 338 | <pre> <jar destfile="${dist}/lib/app.jar"
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| 339 | basedir="${build}/classes"
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| 340 | includes="mypackage/test/**"
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| 341 | excludes="**/Test.class"
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| 342 | /></pre>
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| 343 | <p>jars all files in the <code>${build}/classes</code> directory into a file
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| 344 | called <code>app.jar</code> in the <code>${dist}/lib</code> directory. Only
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| 345 | files under the directory <code>mypackage/test</code> are used, and files with
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| 346 | the name <code>Test.class</code> are excluded.</p>
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| 347 | <pre> <jar destfile="${dist}/lib/app.jar">
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| 348 | <fileset dir="${build}/classes"
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| 349 | excludes="**/Test.class"
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| 350 | />
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| 351 | <fileset dir="${src}/resources"/>
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| 352 | </jar></pre>
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| 353 | <p>jars all files in the <code>${build}/classes</code> directory and also
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| 354 | in the <code>${src}/resources</code> directory together into a file
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| 355 | called <code>app.jar</code> in the <code>${dist}/lib</code> directory.
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| 356 | Files with the name <code>Test.class</code> are excluded.
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| 357 | If there are files such as <code>${build}/classes/mypackage/MyClass.class</code>
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| 358 | and <code>${src}/resources/mypackage/image.gif</code>, they will appear
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| 359 | in the same directory in the JAR (and thus be considered in the same package
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| 360 | by Java).</p>
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| 361 |
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| 362 | <pre> <jar destfile="test.jar" basedir=".">
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| 363 | <include name="build"/>
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| 364 | <manifest>
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| 365 | <attribute name="Built-By" value="${user.name}"/>
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| 366 | <section name="common/class1.class">
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| 367 | <attribute name="Sealed" value="false"/>
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| 368 | </section>
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| 369 | </manifest>
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| 370 | </jar></pre>
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| 371 | <p>
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| 372 | This is an example of an inline manifest specification. Note that the Built-By
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| 373 | attribute will take the value of the Ant property ${user.name}. The manifest
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| 374 | produced by the above would look like this:
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| 375 | </p>
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| 376 | <pre><code>Manifest-Version: 1.0
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| 377 | Built-By: conor
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| 378 | Created-By: Apache Ant 1.6.5
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| 379 |
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| 380 | Name: common/MyClass.class
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| 381 | Sealed: false</code></pre>
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| 382 |
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| 383 |
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| 384 | <p>
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| 385 | The following shows how to create a jar file specifing a service
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| 386 | with an implementation of the JDK6 scripting interface:
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| 387 | </p>
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| 388 | <blockquote><pre><jar jarfile="pinky.jar">
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| 389 | <fileset dir="build/classes"/>
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| 390 | <service type="javax.script.ScriptEngineFactory"
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| 391 | provider="org.acme.PinkyLanguage"/>
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| 392 | </jar>
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| 393 | </pre></blockquote>
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| 394 | <p>
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| 395 | The following shows how to create a jar file specifing a service
|
|---|
| 396 | with two implementations of the JDK6 scripting interface:
|
|---|
| 397 | </p>
|
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| 398 | <blockquote><pre>
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| 399 | <jar jarfile="pinkyandbrain.jar">
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| 400 | <fileset dir="classes"/>
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| 401 | <service type="javax.script.ScriptEngineFactory">
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| 402 | <provider classname="org.acme.PinkyLanguage"/>
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| 403 | <provider classname="org.acme.BrainLanguage"/>
|
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| 404 | </service>
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| 405 | </jar>
|
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| 406 | </pre></blockquote>
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| 407 | </body>
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| 408 | </html>
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