final List locators = new ArrayList();
// create resource locator for specified class files
if (classFileNames != null && !classFileNames.isEmpty()) {
final ResourceLocator classes
= new ListResourceLocator(out, verbose, classFileNames);
if (verbose) {
out.println("Class Locator: using class files: {");
for (Iterator i = classFileNames.iterator(); i.hasNext();) {
out.println(" " + i.next());
}