public void put (Object key, Object value){ if (key == null || value == null) { return;
public void put(Context params){ if (params != null) { if (cxt == null) { cxt = params; return; } for (Enumeration e = params.keys(); e.hasMoreElements();) { Object key = e.nextElement(); this.put(key, params.get(key)); }
    public void put (Object key, Object value){        if (key == null || value == null) {            return;        }        if (cxt == null) cxt = new ContextImpl();        cxt.put(key,value);    }