You may need to reference classes in other JAR files from within a JAR file.
\nFor example, in a typical situation an applet is bundled in a JAR file whose manifest references a different JAR file (or several different JAR files) that serves as utilities for the purposes of that applet. <\/P>
\nYou specify classes to include in the Class-Path<\/TT> header field in the manifest file of an applet or application. The Class-Path<\/TT> header takes the following form: <\/P>
\nClass-Path: jar1-name jar2-name directory-name\/jar3-name<\/EM>
\n<\/PRE><\/BLOCKQUOTE>By using the Class-Path<\/TT> header in the manifest, you can avoid having to specify a long -classpath<\/TT> flag when invoking Java to run the your application.
\n<\/P>
\n<\/P>
\n
\n
\nNote<\/FONT> :<\/STRONG> The Class-Path<\/TT> header points to classes or JAR files on the local network, not JAR files within the JAR file or classes accessible over internet protocols. To load classes in JAR files within a JAR file into the class path, you must write custom code to load those classes. For example, if MyJar.jar<\/TT> contains another JAR file called MyUtils.jar<\/TT>, you cannot use the Class-Path<\/TT> header in MyJar.jar’s<\/TT> manifest to load classes in MyUtils.jar<\/TT> into the class path.
\n
\n<\/BLOCKQUOTE>
\n<\/P><\/BLOCKQUOTE>
\nAn Example<\/H3>
\nWe want to load classes in MyUtils.jar<\/TT> into the class path for use in MyJar.jar<\/TT>. These two JAR files are in the same directory.
\nWe first create a text file named Manifest.txt<\/TT> with the following contents: <\/P>
\nClass-Path: MyUtils.jar
\n<\/PRE><\/BLOCKQUOTE>
\n<\/P>
\n
\n
\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.
\n
\n<\/BLOCKQUOTE>
\nWe then create a JAR file named MyJar.jar<\/TT> by entering the following command: <\/P>
\njar cfm MyJar.jar Manifest.txt MyPackage\/*.class
\n<\/PRE><\/BLOCKQUOTE>This creates the JAR file with a manifest with the following contents:
\nManifest-Version: 1.0
\nClass-Path: MyUtils.jar
\nCreated-By: 1.6.0 (Sun Microsystems Inc.)
\n<\/PRE><\/BLOCKQUOTE>The classes in MyUtils.jar<\/TT> are now loaded into the class path when you run MyJar.jar<\/TT>.<\/BLOCKQUOTE>
\n<\/DIV><\/p>\n","protected":false},"excerpt":{"rendered":"Adding Classes to the JAR File’s Classpath You may need to reference classes in other JAR files from within a JAR file. For example, in a typical situation an applet is bundled in a JAR file whose manifest references a different JAR file (or several different JAR files) that serves as utilities for the purposes … Continue reading Adding Classes to the JAR File’s Classpath<\/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-363","post","type-post","status-publish","format-standard","hentry"],"_links":{"self":[{"href":"https:\/\/www.strongd.net\/index.php?rest_route=\/wp\/v2\/posts\/363","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=363"}],"version-history":[{"count":0,"href":"https:\/\/www.strongd.net\/index.php?rest_route=\/wp\/v2\/posts\/363\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.strongd.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=363"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.strongd.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=363"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.strongd.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=363"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}