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Java Platform Overview and PackagingmediumMultiple SelectObjective-mapped

1Z0-829 Java Platform Overview and Packaging Practice Question

Which TWO statements are true about Java modules in Java 17? (Choose two.)

⚠ Common exam trap

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.

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

A module can export a package only to specific modules using 'exports ... to ...'

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.

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.

  • 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.

  • 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.

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Last reviewed: Jun 30, 2026

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