Error 401 on module

Hello everybody

I have a problem to connect my applet with the digi. I send this RCI command:
assertedassertedassertedassertedasserted

and my program but the answer of the digi is :

java.io.IOException: Server returned HTTP response code: 401 for URL: http://192.168.10.98/UE/rci
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:709)
at gpio.AppletGPIO.jbInit(AppletGPIO.java:112)
at gpio.AppletGPIO.init(AppletGPIO.java:64)
at com.borland.jbuilder.runtime.applet.AppletTestbed.startApplet(Unknown Source)
at com.borland.jbuilder.runtime.applet.AppletTestbed.main(Unknown Source)

I think it’s about the username and password but i don’t know how to write it in RCI command !

I joint my applet