question

[Zhaozhe Ruan]

java -ea:favorite.fruits -da:favorite.fruits.Apple favorite,fruits.Mango

i just want to know if favorite.fruits.Mango has been disabled

thanks

[marc weber]

Hi Zhaozhe, welcome to JavaRanch!

Do you think you could write some code to test this?

[bnkiran kumar]

java -ea:favorite.fruits -da:favorite.fruits.Apple favorite,fruits.Mango


I think there should not be space between Apple and favorite,and if you are not ending with a class you should use ... after package name ,like in first case i think favorite.fruits... should be there.

I have tried it before by giving many class names after -da or -ea but it is not working, only one expression is allowed ',' is not allowed.Even if you specify it will not report error at compile time.

[Zhaozhe Ruan]

The question is
The package favorite.fruits contains different classes for different fruits.Mango,Orange and Apple are some of the classes in this package.Assume that all the classes from this package are compiled with assertions enabled.Given the following command at the command prompt,which of hte following classes would have assertions enabled?
java -ea:favorite.fruits...-da:favorite.fruits.Apple favorite.fruits.Mango
A. favorite.fruits.Mango
B. favorite.fruits.Pineapple
C. favorite.fruits.Apple
D. favorite.fruits.Orange
E. net.util.FTPMan

result is ABD, could you explain why A, thanks

[Krishnamoorthy Sethuraman]

Mango, Pineapple, Orange and Apple are classes inside the package and when the first ea argument is encountered, assertion is enabled for all the classes in this package. Then the second argument da is encountered, assertion is disabled for the Apple class alone. The code runs the Mango class with assertion enabled for all classes except Apple. so, ABD is correct choice. I guess this is the reason. Not sure...