Quick Answer
The Maven Shade Plugin is the correct choice because it builds an executable uber JAR with all dependencies, merging every required library—including transitive ones—into a single, self-contained artifact. This plugin accomplishes this by shading (repackaging) classes and providing a relocation feature to prevent classpath conflicts, which is essential when you need to deploy a fat JAR that runs independently of any external classpath. On the Oracle Certified Professional Java SE 17 Developer 1Z0-829 exam, this concept tests your understanding of build tools and packaging strategies for modern Java applications; a common trap is confusing the Shade Plugin with the Maven Assembly Plugin, which also creates fat JARs but lacks the shading and relocation capabilities that avoid dependency collisions. Remember, if the goal is to produce a single executable JAR that truly bundles everything without version clashes, think “Shade shades the conflicts away.”
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 company uses CI/CD to build and package a Java 17 application. They want to produce a single executable JAR that includes all dependencies. Which tool should be used to achieve this?
Maven JAR Plugin
Why wrong: Maven JAR Plugin creates a standard JAR without dependencies.
Maven Shade Plugin
Maven Shade Plugin creates an uber-JAR with all dependencies.
Java jar command
Why wrong: The jar command packages files but does not resolve dependencies.
jlink tool
Why wrong: jlink creates a custom runtime image, not an executable JAR.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Maven Shade Plugin
The Maven Shade Plugin (B) is the correct choice because it creates an uber-JAR (fat JAR) by merging all project dependencies into a single executable JAR, including transitive dependencies. It also provides a relocation feature to avoid classpath conflicts, which is essential for producing a self-contained artifact for deployment.
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.
Maven JAR Plugin
Why it's wrong here
Maven JAR Plugin creates a standard JAR without dependencies.
Maven Shade Plugin
Why this is correct
Maven Shade Plugin creates an uber-JAR with all dependencies.
Related concept
Read the scenario before looking for a memorised answer.
Java jar command
Why it's wrong here
The jar command packages files but does not resolve dependencies.
jlink tool
Why it's wrong here
jlink creates a custom runtime image, not an executable JAR.
Common exam traps
The trap here is that candidates often confuse the Maven JAR Plugin (which only packages the project's own code) with the Shade Plugin (which bundles dependencies), or mistakenly think the Java jar command or jlink can automatically resolve and include Maven dependencies.
Trap categories for this question
Command / output trap
The jar command packages files but does not resolve dependencies.
Detailed technical explanation
The Maven Shade Plugin uses the Maven artifact resolution mechanism to collect all direct and transitive dependencies, then merges their class files and resources into a single JAR. It also supports shading (relocating) packages to avoid version conflicts when multiple dependencies use the same package names, which is critical in enterprise environments where library version mismatches can cause runtime errors. The resulting uber-JAR can be executed with java -jar because the plugin can configure the manifest to include a Main-Class entry.
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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Java Platform Overview and Packaging — study guide chapter
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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: Maven Shade Plugin — The Maven Shade Plugin (B) is the correct choice because it creates an uber-JAR (fat JAR) by merging all project dependencies into a single executable JAR, including transitive dependencies. It also provides a relocation feature to avoid classpath conflicts, which is essential for producing a self-contained artifact for deployment.
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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