thansk roedy... your liks are relevant and helpful.

however, i tried to find my queries in your site before your post
.....unfortunately your site is not so much organised.....your site
does not have a search box.

Anyway, thank you for providing the link from your sites.

here i found something,

i tried this,

C:\>keytool -genkey -alias alas  -keystore .anyname

and this command asks me few questions ...i  typed answers ...and you
know, it created a file whose name is ".anyname" and  the fle is in
"C:\" from where i executed this command....

this is quite interesting.

BTW, when i opened the ".anyname"  file in editplus, i found so many
weired characters.....i dont understand what are  those. but i think
these are the answers i gave to the tool when it asked me questions
upon execution of the command.  and those answers are encrypted and
written in this file ".anyname" .

am i correct ?

This part is ok.

but i am in anxiety, why the tutorial used the term

"Creating a New Key Pair and Self-Signed Certificate Using keytool"

who are the Key Pairs here ? this wording  "Key pairs" is
misleading...can you explain it  what they are trying to say here ?

why they are using this term "Self-Signed Certificate" in this example
?
      there is no certificate in this example (because certificate has
a .cer  extension .....i dont have a file which has  .cer extension
....of couse, i have a file  whose name is ".anyname"....can you call
this a certificate ?  i dont think so......or is it  ?)