Bundle = JAR file + MANIFEST.MF file
An example of a MANIFEST.MF
Manifest-Version: 1.0 Bundle-ManifestVersion: 2 Bundle-Name: Popup Plug-in Bundle-SymbolicName: cs.ecl.osgi.basics; Bundle-Version: 1.0.0 Bundle-Activator: cs.ecl.osgi.basics.Activator Require-Bundle: org.eclipse.ui, org.eclipse.core.runtime Bundle-ActivationPolicy: lazy Bundle-RequiredExecutionEnvironment: JavaSE-1.6