Cannot sign JAR file using keystore without password

[GoogleCodeExporter]

What steps will reproduce the problem?
1. From the tree on the left, select task "Keytool IUI | Sign file with private 
key | Embedded signature | JAR"
2. Internal frame named "Sign JAR file with private key entry" shows up on the 
right. Enter all required fields. Troubleshhoting: "OK" button requires 
keystore's password to be enabled!


Workaround:
assign a password to the keystore:
From the menubar, select "Tools | Keystore manager | [your.keystore.type]"
Navigate till you reach keystore, select it.
==> "Keystore manager" shows up.
From the toobar, select icon-button "change this keystore's password"
==> that's it!

Original issue reported on code.google.com by bantc...@gmail.com on 9 Apr 2011 at 10:12