====== Getting the "javax.microedition.io.ConnectionNotFoundException: TCP open" Error Message ======

You may get this error message when you develop a J2ME application and try to access the web through an HttpConnection object. There may be other reasons for this but I had the following problem:

  * I was behind a proxy so my connection was refused.
  * Even http://localhost/ didn't work. Maybe the J2ME emulator doesn't use the local hosts file to determine the IP address.
  * Finally, when I used http://127.0.0.1/ (which is the IP address of localhost on Windows), it worked.

If you have other solutions for this, [[http://www.kuederle.com/Contakt|let me know]].