VersionHelper() 
{

}

 abstract ClassLoader getContextClassLoader()

 abstract InputStream getJavaHomeLibStream(String filename)

 abstract String[] getJndiProperties()

 abstract String getJndiProperty(int i)

 abstract InputStream getResourceAsStream(Class c,
    String name)

 abstract NamingEnumeration getResources(ClassLoader cl,
    String name) throws IOException

 protected static URL[] getUrlArray(String codebase) throws MalformedURLException 
{
        // Parse codebase into separate URLs
        StringTokenizer parser = new StringTokenizer(codebase);
        Vector vec = new Vector(10);
        while (parser.hasMoreTokens()) {
            vec.addElement(parser.nextToken());
        }
        String[] url = new String[vec.size()];
        for (int i = 0; i <  url.length; i++) {
            url[i] = (String)vec.elementAt(i);
        }
        URL[] urlArray = new URL[url.length];
        for (int i = 0; i <  urlArray.length; i++) {
            urlArray[i] = new URL(url[i]);
        }
        return urlArray;
}

 public static VersionHelper getVersionHelper() 
{
        return helper;
}

 abstract public Class loadClass(String className) throws ClassNotFoundException

 abstract Class loadClass(String className,
    ClassLoader cl) throws ClassNotFoundException

 abstract public Class loadClass(String className,
    String codebase) throws ClassNotFoundException, MalformedURLException