Problem in Signing the Jar Files

[Mark Henryson]

Hi all,
How to sign the Jar File?
I have a JAR File by name hello.jar. I am following the steps given for signing the jar in JAVA SITE http://www.iam.ubc.ca/guides/javatut99/jar/sign/signing.html.

When I have used the following command to jar, i have encountered error:

    
F:\NAS\Lea>jarsigner hello.jar kevin
Enter Passphrase for keystore: abc123
jarsigner error: java.lang.RuntimeException: keystore load: C:\Documents and Set
tings\KevinS\.keystore (The system cannot find the file specified)

And also what is keystore, keypass and storepass, alias. how to get this things to use:
jarsigner -keystore mykeys -storepass abc123
-keypass mypass app.jar johndoe