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| <title>JAR file placement</title> |
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| <h1 class="topictitle1">JAR file placement</h1> |
| <div><p>If your JAR file is only used in a single Web application, always put the |
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| JAR file in the Web project's WebContent/WEB-INF/lib folder. The JAR files |
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| in this folder are automatically added to the Java build path, and will not require any |
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| further setup when moved to a different server. </p> |
| <p>If the JAR file is used by multiple modules within the same application, |
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| place the JAR file in the enterprise application, then use the Java JAR |
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| Dependencies feature to set up the manifest files and the Java build |
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| class paths. The Java JAR Dependencies Properties page of an EJB or |
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| Web project is used to identify which JARs in the enterprise application the |
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| EJB or Web project (respectively) uses. You can access the Java JAR |
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| Dependencies by selecting Properties from the pop-up menu of an EJB or Web |
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| project. </p> |
| <p>If the JAR file requires access to any J2EE or WebSphere<sup>®</sup> classes, |
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| or to any other JAR files that have been added to ws.ext.dirs, it must also |
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| be placed on the ws.ext.dirs property. The ws.ext.dirs property is used for |
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| all JAR files that require access to the J2EE JAR files or WebSphere's internal |
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| classes. If there are hard dependencies on the JAR file, you must update the Java build |
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| path of each project that uses the JAR file. Any changes you want to make |
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| to ws.ext.dirs can be made using the server editor. </p> |
| <p>It is not recommended to put the JAR file on the global class path. Using |
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| one of the global class paths makes your application vulnerable to changes |
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| made to the classes on which you depend. If you have added the JAR file to |
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| the global class path or ws.ext.dirs properties you will have to publish the |
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| JAR file separately from your application, then you will have to set up the |
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| server class path again if you move to a different server.</p> |
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