All sensitive information, such as passwords, is now read from files. This information is not typed in clear text during an interactive session. Therefore, it is never displayed on the command line or in any logs. See Using the Installation Program of Agent for JBoss Application Server 4.0 for information about creating and using a password file during the agent installation process.
Benefit - Secure Handling of Sensitive Information: The benefit of this feature is increased security. With the use of this feature in the new installation process, the need for typing passwords in clear text on the console has been eliminated, thereby making the installation process less vulnerable to password theft.