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.
A team is migrating a large monolithic Java 8 application to Java 17 using modules. They want to ensure that only the required packages are exported. Which tool should they use to analyze current dependencies and generate module descriptors?
jlink
Why wrong: jlink creates a runtime image, not for dependency analysis.
javap
Why wrong: javap disassembles class files, does not analyze dependencies.
jar
Why wrong: jar is for creating and manipulating JAR files, not for dependency analysis.
jdeps
jdeps analyzes dependencies and can generate module-info.java suggestions.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
jdeps
jdeps is the correct tool because it is specifically designed to analyze class dependencies in Java applications and can generate module descriptor (module-info.java) suggestions. It shows which packages are used and which are not, enabling the team to export only the required packages when migrating to Java modules.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
jlink
Why it's wrong here
jlink creates a runtime image, not for dependency analysis.
javap
Why it's wrong here
javap disassembles class files, does not analyze dependencies.
jar
Why it's wrong here
jar is for creating and manipulating JAR files, not for dependency analysis.
jdeps
Why this is correct
jdeps analyzes dependencies and can generate module-info.java suggestions.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
The trap here is that candidates confuse jdeps with jlink or jar, thinking that any packaging tool can analyze dependencies, but only jdeps provides the specific module descriptor generation capability required for modularization.
Detailed technical explanation
jdeps uses bytecode analysis to trace class references across packages and JARs, and with the --generate-module-info option, it outputs a module-info.java that explicitly exports only the packages actually used by other modules. This is critical in large migrations because over-exporting packages can break encapsulation, a key benefit of the Java module system introduced in Java 9.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
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FAQ
Java Platform Overview and Packaging — This question tests Java Platform Overview and Packaging — Read the scenario before looking for a memorised answer..
The correct answer is: jdeps — jdeps is the correct tool because it is specifically designed to analyze class dependencies in Java applications and can generate module descriptor (module-info.java) suggestions. It shows which packages are used and which are not, enabling the team to export only the required packages when migrating to Java modules.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 2026
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