default package?

Q4 which of the following is the correct way to define a class that will be in the default package
A1

package default;

import java.util.*;


A2 import java.util.*;

package default;
A3 import java.util.*;
A4

all the above

The answer explanation is given like:
[Even if you don't write "package default" your class will automatically
placed in the "default" package.] What is this "default" package?
I see this irrelevant. "default" is the keyword so, it will yield compilation error.

Please any comment!

Regards,
cmbhatt
[ April 09, 2007: Message edited by: Chandra Bhatt ]

i tried compiling with package default, but the file did not compile,i guess you cannot give the package name as default with small d.


regards,
Sharan...

hi

I think correct option is A3. please compile it i think you will definetly get the answer


Best of luck.

default is a keyword so I don't think that a package default can de defined.

When you don't define a package statement in your class then the default-package will be created.

Also the package statement should be the first statement in your code after declaring the class name.

I think there is a confusion here: about default the concept and default the keyword.

The 'default' keyword applies only in the case of a switch-case construct.

When talking about default packages (and access specifier), default means the 'absence' of any keyword or identifier. So, in common parlance, when you say default package, it means unnamed package. There is no question of using the string 'default' to name it.

cheers.

Hi Remko,

Originally posted By Remko:
When you don't define a package statement in your class then the default-package will be created.

I dont find any default-package. As you say if you don't define package,
default package will be created. Is your answer influenced by the stated
behavior of different Java IDE's which creates default-package in case not
package statement in your class?

package means what to you? a directory will be created?



-cmbhatt
[ April 09, 2007: Message edited by: Chandra Bhatt ]

there is certainly a default behavior to place application code.

but a in "default" package.
I do'nt think so.

With the default package I mean there is no package defined. So the compiled class file will be in the same directory.

Stuart Ash has explained everything clear for you.
He has done a good job.

Remko is correct. the default package means if there is no package defined, the compiled class file will be in the same directory."

By the way, you can not use package name "default", as "default" is a java reserved keyword.

hi Folks

Ans A3 is correct for Default package

For a reference on what Stuart described above, see JLS - 7.4.2 Unnamed Packages.

Originally posted by Remko Strating:
With the default package I mean there is no package defined. So the compiled class file will be in the same directory.

Stuart Ash has explained everything clear for you.
He has done a good job.

Thank you Remko and Patrick for seconding