The correct answer is that the module exports com.myapp.internal to the module myapp.tests only, because the `exports ... to` syntax in a module descriptor creates a qualified export that restricts package access to a specified list of recipient modules rather than making it available to all modules. This concept is central to the Java Platform Module System (JPMS) and appears on the Oracle Certified Professional Java SE 17 Developer 1Z0-829 exam as a way to test your understanding of encapsulation and fine-grained access control. A common trap is confusing qualified exports with `opens` directives or assuming that `exports` without a qualifier is equivalent—remember that `exports package to module` is like giving a specific key to a specific neighbor, not leaving the door open for everyone. Memory tip: think “qualified = quarantined” to recall that the package is locked down to only the named modules.
1Z0-829 Java Platform Overview and Packaging Practice Question
This 1Z0-829 practice question tests your understanding of java platform overview and packaging. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Network Topology
A developer runs the command above on a JAR file. Which statement accurately describes the module myapp?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The module exports com.myapp.internal to the module myapp.tests only.
Option C is correct because the command `java --describe-module myapp` outputs the module descriptor, which includes `exports com.myapp.internal to myapp.tests`. This indicates that the module `myapp` exports the package `com.myapp.internal` specifically to the module `myapp.tests` only, not to all modules. The `exports ... to` syntax restricts access to a qualified list of modules.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
The module opens com.myapp.internal for deep reflection to all modules.
Why it's wrong here
The command shows 'exports ... to', not 'opens'. Deep reflection requires the opens directive.
✗
The module provides a service implementation.
Why it's wrong here
No 'provides' directive is present in the module descriptor.
✓
The module exports com.myapp.internal to the module myapp.tests only.
Why this is correct
The qualified exports directive restricts access to the specified module.
Related concept
Read the scenario before looking for a memorised answer.
✗
The module requires java.base explicitly; it is not mandated.
Why it's wrong here
java.base is always implicitly required and mandated; it does not need to be declared.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Oracle often tests the distinction between `exports` (compile-time access) and `opens` (reflective access), and the trap here is that candidates confuse a qualified export with an `opens` directive, or assume `exports` without a qualifier means all modules, when the `to` clause specifies a limited set.
Trap categories for this question
Command / output trap
The command shows 'exports ... to', not 'opens'. Deep reflection requires the opens directive.
Detailed technical explanation
How to think about this question
The `exports ... to` directive is a qualified export, which restricts the exported package to only the specified target modules, enhancing encapsulation. Under the hood, the Java module system enforces this at compile time and runtime via access control checks in the JVM. A real-world scenario is testing: a module may export internal packages to a test module (e.g., `myapp.tests`) to allow white-box testing without exposing those packages to all consumers.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 1Z0-829 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Java Platform Overview and Packaging — This question tests Java Platform Overview and Packaging — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The module exports com.myapp.internal to the module myapp.tests only. — Option C is correct because the command `java --describe-module myapp` outputs the module descriptor, which includes `exports com.myapp.internal to myapp.tests`. This indicates that the module `myapp` exports the package `com.myapp.internal` specifically to the module `myapp.tests` only, not to all modules. The `exports ... to` syntax restricts access to a qualified list of modules.
What should I do if I get this 1Z0-829 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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