The Java Tutorials have been written for JDK 8. Examples and practices described in this page don't take advantage of improvements introduced in later releases and might use technology no longer available.
See Java Language Changes for a summary of updated language features in Java SE 9 and subsequent releases.
See JDK Release Notes for information about new features, enhancements, and removed or deprecated options for all JDK releases.
In this lesson, you will act as the receiver of the signed jar file containing the count.class
file. It requests access to your system resources on your system that it normally would not have permission to access.
This procedure requires you to perform the following steps listed below.
keytool -import
command, and give it the alias susan
.count
application signed by susan
to read the specified file on your system.count
application to verify that with a trusted certificate and access to your new policy file that grants it permission to read files on your system, count
can now read your data
file.