Android Market - Error While Uploading APK file

Just now I have developed an application and now I am ready to upload it to Android market, but when I am trying to upload, it shows the following error message:

Market does not accept apk signed with the debug certificate. Create a new certificate that is valid for atl开发者_运维知识库east 50 years. Market requires that the certificated used to sign the apk be Valid until at least October 22, 2033. Create a new Certificate.

Now how do I fix this problem, so that I can upload the APK file to Android market successfully?

While developing and testing, you can compile in debug mode(debug certificate).

When your application is ready for release, you must compile in release mode and then sign the .apk with your private key.

The following link gives will help you

http://developer.android.com/guide/publishing/app-signing.html