I am creating a tool that can be used to sign applets. To do this it needs to run the keytool and jarsigner applications that come with the JDK (Java Development Kit)

On windows these files have a dot-exe extendion i.e.
keytool.exe
jarsigner.exe

on MacOSX they don't have a file extension so are
keytool
jarsigner

I don't have a Linux machine so I have no idea whether executable files have an extesion or not. So if you have a Linux machine with JDK installed I would be pleased if you would look and let me know the extension for these files.

THanks in advance.