// add "test.jar" into project classpath
addTestJar();
// create and right away dispose DefaultResourcesProvider
{
IResourcesProvider provider = new DefaultResourcesProvider(m_javaProject);
provider.dispose();
}
// dispose project, so delete create "test.jar", if DefaultResourcesProvider is not disposed,
// it will keep "test.jar" opened, so we will not able to delete it
do_projectDispose();
}