WAR files can be signed?

[muthu moorthy]

Hi

Ref to the question below.

I am not sure about this "WAR files can or cannot be signed", i dont understand the term "signed"

I found the answer description below. Anybody can explain, thank you

Option B is incorrect because WAR files may be signed. Option C is incorrect.


Which four are true about WAR files? (Choose four.)

A WAR stands for Web ARchive.
B WAR files cannot be signed.
C WAR files typically contain EAR files.
D Entire web applications can be packaged into a single WAR file.
E WAR files can be created using the standard Java jar command.
F WEB-INF and META-INF are common top-level directories within WAR files.

[Ulf Dittmer]

Signing files in the Java world is most often associated with applets, although any jar/war/ear/... file can be signed. Wikipedia has an extensive writeup, but this introduction is a bit more readable.