How to add resources to classpath

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  1. Adding resource folder to classpath:

    When you Clean-&-Build a NetBeans Ant Based Project it creates a manifest.mf file in the root directory of the project. This file gets included in the JAR file also. Modify this file and add entry like follows:

    Manifest-Version: 1.0
X-COMMENT: Main-Class will be added automatically by build
Class-Path: arts/

    slash is important after arts in the class path.

  2. Including the arts resource folder in the distribution

    Either copy this folder in the dist folder after the build or add a ANT target to copy the required resources in the dist folder.

    Add the target like as follows in the build.xml file:

    <target name="-post-jar">
     <mkdir dir="${dist.dir}/resources"/>
     <copy todir="${dist.dir}/resources">
         <fileset dir="${basedir}/resources" />
     </copy>
 </target>

  3. Code to access such resources:

    The code needed to access such resource files shall be as follows: (This will not work in design time but surely from the JAR file)

    // pay attention to relative path
URL resource = ClassLoader.getSystemResource("gui/refresh.png"); 
ImageIcon tmp = new ImageIcon(resource);

    NOTE: The files manifest.mf and build.xml located in the root directory of the project are accessible from the Files Panel in NetBeans IDE

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