{"id":354,"date":"2007-10-21T00:00:00","date_gmt":"2007-10-21T00:00:00","guid":{"rendered":"http:\/\/www.strongd.net\/?p=354"},"modified":"2007-10-21T00:00:00","modified_gmt":"2007-10-21T00:00:00","slug":"Setting Package Version Information","status":"publish","type":"post","link":"https:\/\/www.strongd.net\/?p=354","title":{"rendered":"Setting Package Version Information"},"content":{"rendered":"

Setting Package Version Information<\/DIV>
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You may need to include package version information in a JAR file’s manifest. You provide this information with the following headers in the manifest:
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Headers in a manifest <\/STRONG><\/CAPTION>
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Header<\/TH>
\n		Definition<\/TH><\/TR>
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Name<\/TT><\/TD>
\n		The name of the specification.<\/TD><\/TR>
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Specification-Title<\/TT><\/TD>
\n		The title of the specification.<\/TD><\/TR>
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Specification-Version<\/TT><\/TD>
\n		The version of the specification.<\/TD><\/TR>
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Specification-Vendor<\/TT><\/TD>
\n		The vendor of the specification.<\/TD><\/TR>
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Implementation-Title<\/TT><\/TD>
\n		The title of the implementation.<\/TD><\/TR>
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Implementation-Version<\/TT><\/TD>
\n		The build number of the implementation.<\/TD><\/TR>
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Implementation-Vendor<\/TT><\/TD>
\n		The vendor of the implementation.<\/TD><\/TR><\/TBODY><\/TABLE><\/P>
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One set of such headers can be assigned to each package. The versioning headers should appear directly beneath the Name<\/TT> header for the package. This example shows all the versioning headers: <\/P>
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Name: java\/util\/
\nSpecification-Title: Java Utility Classes
\nSpecification-Version: 1.2
\nSpecification-Vendor: Sun Microsystems, Inc.
\nImplementation-Title: java.util
\nImplementation-Version: build57
\nImplementation-Vendor: Sun Microsystems, Inc.
\n<\/PRE><\/BLOCKQUOTE>
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<\/P>
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For more information about package version headers, see the Package Versioning specification <\/A>. <\/P><\/BLOCKQUOTE>
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<\/P>
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An Example<\/H3>
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We want to include the headers in the example above in the manifest of MyJar.jar.
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We first create a text file named Manifest.txt<\/TT> with the following contents: <\/P>
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Name: java\/util\/
\nSpecification-Title: Java Utility Classes
\nSpecification-Version: 1.2
\nSpecification-Vendor: Sun Microsystems, Inc.
\nImplementation-Title: java.util
\nImplementation-Version: build57
\nImplementation-Vendor: Sun Microsystems, Inc.
\n<\/PRE><\/BLOCKQUOTE>
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\nWarning<\/FONT> :<\/STRONG> The text file must end with a new line or carriage return. The last line will not be parsed properly if it does not end with a new line or carriage return.
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\n<\/BLOCKQUOTE>We then create a JAR file named MyJar.jar<\/TT> by entering the following command:
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jar cmf MyJar.jar Manifest.txt MyPackage\/*.class
\n<\/PRE><\/BLOCKQUOTE>This creates the JAR file with a manifest with the following contents:
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Manifest-Version: 1.0
\nCreated-By: 1.6.0 (Sun Microsystems Inc.)
\nName: java\/util\/
\nSpecification-Title: Java Utility Classes
\nSpecification-Version: 1.2
\nSpecification-Vendor: Sun Microsystems, Inc.
\nImplementation-Title: java.util
\nImplementation-Version: build57
\nImplementation-Vendor: Sun Microsystems, Inc.
\n<\/PRE><\/BLOCKQUOTE><\/BLOCKQUOTE>
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<\/DIV><\/p>\n","protected":false},"excerpt":{"rendered":"
Setting Package Version Information You may need to include package version information in a JAR file’s manifest. You provide this information with the following headers in the manifest: Headers in a manifest Header Definition Name The name of the specification. Specification-Title The title of the specification. Specification-Version The version of the specification. Specification-Vendor The vendor … Continue reading Setting Package Version Information<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-354","post","type-post","status-publish","format-standard","hentry"],"_links":{"self":[{"href":"https:\/\/www.strongd.net\/index.php?rest_route=\/wp\/v2\/posts\/354","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.strongd.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.strongd.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.strongd.net\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.strongd.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=354"}],"version-history":[{"count":0,"href":"https:\/\/www.strongd.net\/index.php?rest_route=\/wp\/v2\/posts\/354\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.strongd.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=354"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.strongd.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=354"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.strongd.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=354"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}