this.handler = getURLStreamHandler(protocol); if (this.handler == null) throw new IOException("Handler for protocol " + protocol + " not found");
this.ph = getURLStreamHandler(protocol); if (this.ph == null) throw new IOException("Handler for protocol " + protocol + " not found");
    private void readObject(ObjectInputStream ois) throws IOException,            ClassNotFoundException {        ois.defaultReadObject();        this.handler = getURLStreamHandler(protocol);        if (this.handler == null)                throw new IOException("Handler for protocol " + protocol                        + " not found");    }