Quick Answer
The answer is the JAR file with a manifest, the JMOD file, and the native installer. These three are valid distribution formats for Java 17 because each serves a distinct packaging purpose: a JAR with a manifest bundles compiled classes and metadata for execution via the `java -jar` command, a JMOD file is a modular format introduced in Java 9 (JEP 261) that can include native code and configuration for the Java Module System, and a native installer packages the application into a platform-specific executable for end-user deployment. On the Oracle Certified Professional Java SE 17 Developer 1Z0-829 exam, this question tests your understanding of the Java Platform Module System (JPMS) and practical deployment options, often trapping candidates who overlook that a simple JAR without a manifest is not directly executable. A common memory tip is to remember the three packaging pillars: JAR for libraries, JMOD for modules, and native installers for distribution—think “JAR, JMOD, Installer” to avoid confusing a plain JAR with a valid distribution format.
This 1Z0-829 practice question tests your understanding of java platform overview and packaging. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 THREE are valid ways to package a Java 17 application for distribution? (Choose three.)
JMOD file
JMOD is a packaging format for modules.
ZIP file containing compiled classes
Why wrong: ZIP is not a standard Java packaging format.
Native installer (e.g., MSI, DMG)
jpackage can create native installers.
Shell script that compiles and runs the application
Why wrong: That is not a packaging format.
JAR file with a manifest
Standard JAR packaging is valid.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
JMOD file
A is correct because a JMOD file is a native packaging format introduced in Java 9 (JEP 261) specifically for distributing Java modules. It can include compiled classes, native code, configuration files, and even other JMOD files, making it a valid distribution format for Java 17 applications, especially when using the Java Module System.
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.
JMOD file
Why this is correct
JMOD is a packaging format for modules.
Related concept
Read the scenario before looking for a memorised answer.
ZIP file containing compiled classes
Why it's wrong here
ZIP is not a standard Java packaging format.
Native installer (e.g., MSI, DMG)
Why this is correct
jpackage can create native installers.
Related concept
Read the scenario before looking for a memorised answer.
Shell script that compiles and runs the application
Why it's wrong here
That is not a packaging format.
JAR file with a manifest
Why this is correct
Standard JAR packaging is valid.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
The trap here is that candidates often confuse a 'distribution package' with a 'build artifact' or 'source code delivery', leading them to select options like a ZIP of classes or a shell script, which are not valid packaging formats for end-user distribution.
Detailed technical explanation
JMOD files are created using the `jmod` tool and can be used with `jlink` to produce custom runtime images, which is a key advantage for modular applications in Java 17. Unlike JAR files, JMOD files can include native libraries and are not executable on their own; they are primarily used for linking and module resolution. In real-world scenarios, JMODs are often used in enterprise environments to distribute modular libraries or to create minimal JREs for containerized deployments.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
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: JMOD file — A is correct because a JMOD file is a native packaging format introduced in Java 9 (JEP 261) specifically for distributing Java modules. It can include compiled classes, native code, configuration files, and even other JMOD files, making it a valid distribution format for Java 17 applications, especially when using the Java Module System.
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 11, 2026
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