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.
Here
is the complete source code for the VerSig.java
program, with some comments added.
Compile and run the program. Remember, you need to specify three arguments on the command line:
Since you will be testing the output of the GenSig
program, the file names you should use are
suepk
sig
data
Here's a sample run; the bold indicates what you type.
%java VerSig suepk sig data signature verifies: true