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import static question

 
Greenhorn
Posts: 4
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Hi,

i come across this question:

given:
package sun.scjp;

public enum Color { RED, GREEN, BLUE}

package sun.beta;
//insert code here

public class Beta{
Color g= GREEN;
public static void main(String [] args){
System.out.println(GREEN);}
}
}

The class Beta and the enum Color are in different packages.
Which two code fragments, inserted individually at line 2 of the Beta declaration,
will allow this code to compile? (choose 2)

a. import sun.scjp.Color.*;
b. import static sun.scjp.Color.*;
c. import sun.scjp.Color; import static sun.scjp.Color.*;
d. import sun.scjp.*; import static sun.scjp.Color.*;
e. import sun.scjp.Color; import static sun.scjp.Color.GREEN;

My answer is C and D, while the correct answer is C and E.
How? D and E looks the same.. Can anyone give me a clear explanation about this?

appreciate your help
 
Ranch Hand
Posts: 262
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Hi!!!

The code is compiling with d) and e)

d. import sun.scjp.*; import static sun.scjp.Color.*;
e. import sun.scjp.Color; import static sun.scjp.Color.GREEN;

I don't understand why you have to choos only two.
I think that c, d and e is the correct answer.

Where did you get the code ?
 
Ranch Hand
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question D, is missed why first import does not import enum, the letter does not import a static member, and letter B only imports static, and the letter most correct is C and E which had in the letter E to import correct the member duly enum. These questions are suffered.
 
Java Cowboy
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ailina n, your name does not conform to the JavaRanch name policy.

Please take a moment to carefully read the policy and change your display name. Note that your name should consist of a first name, space and a second name. A single letter "n" is not an acceptable second name.

Note that conforming to the name policy is not optional. If you do not change your name after multiple warnings, your account might be locked. You have already been warned more than once.
 
Ranch Hand
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Howdy Ailina!

Thanks for changing you user name.

c and d and e compile.


In the aligned version I think it is obvious that all three do their job.

The non-static import is required for line
Color g= GREEN; in Beta

And the static import for line
System.out.println(GREEN);


Yours,
Bu.
 
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