Errata OCP Java SE 11 Programmer I Study Guide - Chapter 1 Review Question 16

[ilkay Polat]

Hi,

Errata OCP Java SE 11 Programmer I Study Guide, in Chapter 1, in Review Question 16,

The answer is written as only D option. But it should be B, D, F.

B --> javac named\A\Bird.java compilation works
D --> javac named\A\Bird.java compilation works
F --> javac named\A\Bird.java compilation works

Could you possibly check it please?

[Campbell Ritchie]

Please confirm that is the Boyarsky and Selikoff book.
Please provide more information for those of us who don't have the book.

[ilkay Polat]

Yes this question is from the Boyarsky and Selikoff book.



Question: Suppose we have the following class in the file /my/directory/named/A/Bird.java

Which of the answer options replace the INSERT CODE HERE when added independently if we compile from /my/directory?

INSERT CODE HERE
public class Bird { }

[Campbell Ritchie]

I'm afraid I'm getting confused. All three answers you showed look the same to me.

[ilkay Polat]

B) package my.directory.named.A;
D) package named.A;
F) package A;

[Campbell Ritchie]

Have you tried it? I think you are right that you can enter all those package names.

[ilkay Polat]

Yes I have tried all of them. I think those 3 options are the answers.

[ilkay Polat]

So what do you think Jeanne Boyarsky?

[Jeanne Boyarsky]

The intent was fr the most common option. I noted in the errata though since we did say choose "all"

[Frank Mi]

Hi Jeanne, I feel that this question is confusing, because the "javac" command only needs you to provide a path of the file. It really doesn't matter where you are or how the class declared its packages. It's unlike the "java" command which require you to be at the root of the project folder. Did you mean to test the "java" command in this question instead of "javac"?

[Jeanne Boyarsky]

No. We were intending to test basic use of javac. Moot point now since command line javac isn't on the 819 exam!

[Maria Mihaila]

Jeanne Boyarsky wrote:No. We were intending to test basic use of javac. Moot point now since command line javac isn't on the 819 exam!

Apologies if this is mentioned somewhere else but can you please specify in detail which sections of your 815 book are not on the 819 exam anymore? I don't want to miss anything in my learning journey

Thank you very much!

[Jeanne Boyarsky]

OUr 819 page lists what you can skip studying. (It isn't much, but every little bit helps)

[henry leu]

Hi,

This is the question from Jeanne's OCP java SE 11 Programmer I book.
Question #14 in Chapter 1.

The question is:

Suppose we have the following class in the file /my/directory/named/A/Bird.java.
Which of the answer options replaces INSERT CODE  HERE when added independently if we compile from /my/directory? (Choose all the apply.)


A. package my.directory.named.a;
B. package my.directory.named.A;
C. package named.a;
D. package named.A;
E. package a;
F. package A;

INSERT CODE HERE
public class Bird{}

------------------------------------------------------

I believe the answer should be all the options A, B, C, D, E, and F.
I can use EITHER/ANY one of the packages and compile successfully under the /my/directory.
When compiling, it doesn't matter what the package name that Bird.java has.

See below:

/my/directory/     javac named/A/Bird.java

package my.directory.named.a;  // compiles
public class Bird{}

package my.directory.named.A;  // compiles
public class Bird{}

package named.a;  // compiles
public class Bird{}

package named.A;  // compiles
public class Bird{}

package a;  // compiles
public class Bird{}

package A;  // compiles
public class Bird{}

[Campbell Ritchie]

HL, please show us what instructions you used to compile those files.

[henry leu]

Campbell Ritchie wrote:HL, please show us what instructions you used to compile those files.

The instruction that I used is:

calling  javac named/A/Bird.java

under the directory /my/directory

[Jeanne Boyarsky]

The question is intended to address common convetions.

Also note that compiling regular classes at the command line is not on the 819. Compiling modules still is.