About Question enthuware.ocpjp.v8.2.1371 :

[sahoo007tm]

In the explanation:

"..., but disable them in a particular package: java -ea -da:<package>... myPackage.myProgram"

This statement does not seem to be 100% true in a general situation where you have several packages and
sub-packages.

If you have following packages
good
good.a
good.a.b

-da:good... wont disable them for the "particular package" 'good' alone. It will disable them for all three packages above.

-da:good... -ea:good.a -ea:good.a.b

[admin]

You are right. The explanation has been enhanced to make it clear.
thank you for your feedback!
Paul.