public static void noSpace(String string) throws JSONException {
    	int i, length = string.length();
    	if (length == 0) {
    		throw new JSONException("Empty string.");
    	}
    	for (i = 0; i < length; i += 1) {
		    if (Character.isWhitespace(string.charAt(i))) {
		    	throw new JSONException("'" + string + 
		    			"' contains a space character.");
		    }
		}
    }