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.
Which TWO statements are true about Java modules in Java 17? (Choose two.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
A module can export a package only to specific modules using 'exports ... to ...'
Option A is correct because the 'exports ... to ...' directive in module-info.java restricts the exported package to only the specified target modules, providing fine-grained access control. This is a key feature of the Java module system introduced in Java 9, allowing a module to expose its packages only to trusted modules rather than all other 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.
✓
A module can export a package only to specific modules using 'exports ... to ...'
Why this is correct
Qualified exports limit access to specified modules.
Related concept
Read the scenario before looking for a memorised answer.
✓
The module-info.java file must be compiled with javac and placed in the root of the JAR.
Why this is correct
module-info.class must be at the root of the modular JAR.
Related concept
Read the scenario before looking for a memorised answer.
✗
All packages in a module are automatically exported.
Why it's wrong here
Only explicitly exported packages are accessible outside the module.
✗
The jdeps tool can be used to create a module graph.
Why it's wrong here
jdeps analyzes dependencies but does not create graphs directly.
✗
The jlink tool creates a JAR file containing the module.
Why it's wrong here
jlink creates a runtime image, not a JAR.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Oracle often tests the misconception that all packages in a module are automatically exported, but in reality, only explicitly exported packages are accessible outside the module, and the jlink tool creates a runtime image, not a JAR file.
Detailed technical explanation
How to think about this question
The 'exports ... to ...' directive is part of the qualified exports mechanism, which is enforced at both compile time and runtime by the Java module system. This is particularly useful in large applications where you want to expose internal APIs only to specific modules (e.g., a testing module) while hiding them from others, reducing the risk of unintended coupling. The module-info.java file must be compiled with javac and placed in the root of the JAR (or module path) because the module system reads it from the module descriptor to enforce access rules.
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: A module can export a package only to specific modules using 'exports ... to ...' — Option A is correct because the 'exports ... to ...' directive in module-info.java restricts the exported package to only the specified target modules, providing fine-grained access control. This is a key feature of the Java module system introduced in Java 9, allowing a module to expose its packages only to trusted modules rather than all other 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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