K&B SCJP 5 book: class path and jar files question

[warren li]

Hi,

I don't understand this part of explanation in K&B SCJP 5 book, Page798:

B,D, and F are incorrect because java needs a classpath that specifies two directories, one for the class file(the .directory), and one for the JAR file( the com directory).

Or simply, I don't understand in answer H:
why "-classpath com/KitJar.jar:." is wrong.

Any helpers? thank you.
[ June 10, 2006: Message edited by: warren li ]

[Firas Zuriekat]

why "-classpath com/KitJar.jar:." is wrong.

Why are you saying it's wrong above.

"-classpath com/KitJar.jar:." is correct.

Anyway, I think I know what you mean.

A full expalanation is here.

Basically, go to Control Panel -> System and remove ".". Try to compile and run. You will notice an exception occurs. So you need to specify "." in -cp if it's not in System.

The Bonus Exam may have a similar question. Read this for more info.
[ June 11, 2006: Message edited by: Firas Zureikat ]

[warren li]

you didn't explain the quoted text.

[Firas Zuriekat]

Does K&B say that "-classpath com/KitJar.jar:." is wrong?. It doesn't say it's wrong. It's actually the correct answer. You need the "." if your CLASSPATH doesn't already have "." there.

May be someone else could help. I might have misunderstood the question.

[warren li]

sorry. please read the book on that page first. thanks.

[S Thiyanesh]

Firas you are correct.
Answer H is correct, you always need two classpaths when the two class files are existing in different location.

[warren li]

Originally posted by Firas Zureikat:


Why are you saying it's wrong above.

"-classpath com/KitJar.jar:." is correct.

Anyway, I think I know what you mean.

A full expalanation is here.

Basically, go to Control Panel -> System and remove ".". Try to compile and run. You will notice an exception occurs. So you need to specify "." in -cp if it's not in System.

The Bonus Exam may have a similar question. Read this for more info.

[ June 11, 2006: Message edited by: Firas Zureikat ]

Sorry I read the answer wrongly, I thought F was correct.
but after reading the thread you referred, I am much clearer now. Thanks.