Having a difficult time generating a signed key. Using keytool in the Java jdk. Several failed attempts. Currently locked out.

1. How can I get keytool to let me try again?
2. What is the correct extension on the key file? PhoneGap Build rejected .jks.
3. What do I enter when keytool asks if the data is correct? I see.... blah blah...[no]: a blinking cursor here.

I've tried a dozen times. Something is always wrong. The file itself is exactly what I see on the Java docs page and everywhere else I see this "pairs file" listed.

Can anyone give advice, Please.