if (System.getProperty(PROTOCOL_HANDLERS) != null) {
StringTokenizer st = new StringTokenizer(System.getProperty(
PROTOCOL_HANDLERS), ",");
while (st.hasMoreTokens()) {
ProtocolHandler protocolHandler = (ProtocolHandler) loadInstance(st.nextToken());
if (protocolHandler != null) {
String[] protocols = protocolHandler.getProtocols();
for (String protocol : protocols) {
protocolHandlers.put(protocol, protocolHandler);
}
}