1Z0-829 Java Platform Overview and Packaging Practice Question
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?
⚠ Common exam trap
It's easy for candidates to 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.
Answer choices
Why each option matters
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.
Answer analysis
Option-by-option breakdown
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.
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