Java Platform Overview and Packaging →easyMultiple ChoiceObjective-mapped

1Z0-829 Java Platform Overview and Packaging Practice Question

A developer has a module named 'com.example.app' that exports a package 'com.example.api'. Another module 'com.example.client' requires 'com.example.app'. Which directive must be in the module-info.java of 'com.example.client'?

⚠ Common exam trap

Watch out — candidates often confuse 'requires' with 'exports' or 'opens', mistakenly thinking that the client module must export or open the server module's package, rather than simply declaring a dependency.

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

✓

requires com.example.app;

The 'requires' directive in a module-info.java file declares a dependency on another module. For 'com.example.client' to access the exported packages of 'com.example.app', it must include 'requires com.example.app;'. This is the standard mechanism for module dependency in the Java Platform Module System (JPMS).

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✗
opens com.example.app;
Why it's wrong here
'opens' is for reflective access.
✗
uses com.example.api;
Why it's wrong here
'uses' is for service interfaces.
✗
exports com.example.api;
Why it's wrong here
Exports are used in the providing module, not the client.
✓
requires com.example.app;
Why this is correct
This correctly declares the dependency.

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1Z0-829 Java Platform Overview and Packaging Practice Question

Why each option matters

Option-by-option breakdown

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