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From David Jencks <>
Subject Re: Utility Project/Library (Geronimo + Eclipse) - how to?
Date Fri, 17 Dec 2010 21:20:05 GMT
if your project is a war do not use the manifest class-path, just get your utility jar into

if its an ear, still don't use the manifest class-path but put it in lib/ in the ear (this
is an javaee 5 feature that works better than manifest class-path)

Or use a geronimo plan, install the jar in the geronimo repository, and have a geronimo dependency
from the ee project to the utility jar.  This will result in the utility jar being loaded
in a single separate classloader so the jar is shared across all uses.  The first two choices
well give you a separate copy per war or ear.

david jencks

On Dec 17, 2010, at 12:56 PM, dsh wrote:

> Hi,
> I would suspect that one needs to add utility JARs via "Deployment
> Assembly" under Eclipse Helios and via "J2EE Module Dependencies"
> under pre Eclipse Helios versions. The "Java Build Path" does NOT do
> the trick cause it is a development time setting rather than a runtime
> setting.
> Technically your web modules MANIFEST.MF file should contain a
> classpath entry via Class-Path listing the utility module.
> Cheers
> Daniel
> On Fri, Dec 17, 2010 at 8:18 PM, rysiek <> wrote:
>> Hello,
>> I have a problem with making a utility library for Geronimo 2.2 in Eclipse
>> (newest Eclipse Java EE).
>> I idea is to create a project (New Project -> Utility Project) make few
>> shared classes for other projects and then use it in other applications
>> (Dynamic Web Project). I add the utility project to dependency (Project ->
>> Properties -> Java Build Path -> Projects). Eclipse seems to see the library
>> but when I start the web application I got a message that class is not
>> found:
>> Caused by: java.lang.ClassNotFoundException: com.test.TestUtil in
>> classloader default/webtest/1.0/car
>> TestUtil class is very simple:
>>        public static void TestMethod(String arg1) {
>>                System.out.println("Hello world: "+arg1);
>>        }
>> And the web application is also simple:
>>        protected void doGet(HttpServletRequest request, HttpServletResponse
>> response) throws ServletException, IOException {
>>                TestUtil.TestMethod(request.getRequestURI());
>>        }
>> The projects is published without error, but when I do a get request I got
>> ClassNotFoundException.
>> What can I do to fix this?
>> (I'm new at J2EE programming and Geronimo)
>> Thanks
>> --
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