private void checkManifestJar(URL url) throws Exception { final File file = URLCodec.toFile(url); final JarFile jarFile = new JarFile(file); final Manifest manifest = jarFile.getManifest(); Assert.assertEquals("1.0", ManifestU.getAttribute(manifest, "Manifest-Version")); Assert.assertNotNull(ManifestU.getImplementationBuild(manifest)); }