//addJRELibraries
entries.addAll(Arrays.asList(PreferenceConstants.getDefaultJRELibrary()));
//addJbpmLibraries
JavaCore.setClasspathContainer(JBPM_CONTAINER_PATH, new IJavaProject[] { javaProject },
new IClasspathContainer[] { new JbpmClasspathContainer(javaProject, JBPM_CONTAINER_PATH) }, null);
entries.add(JavaCore.newContainerEntry(JBPM_CONTAINER_PATH));
javaProject.setRawClasspath(entries.toArray(new IClasspathEntry[entries.size()]), null);
}