public static boolean containsPackage(String o) {
        return CS.contains(o) || o.startsWith("java") || o.startsWith("javax")
        		|| o.startsWith("com.sun") || o.startsWith("sun") 
        		|| o.startsWith("oracle") || o.startsWith("com.oracle")
                || o.startsWith("org.xml") || o.startsWith("org.w3c.dom") || o.startsWith("org.omg");
    }