The answer is that the 'notfound' entry indicates the application depends on a package not provided by any module on the module path. This occurs because jdeps -s performs a summary analysis of module-level dependencies, and when it encounters a required package that cannot be resolved from the specified modules or the JDK's built-in modules, it labels the dependency as 'notfound', meaning the module is missing at analysis time. On the Oracle Certified Professional Java SE 17 Developer 1Z0-829 exam, this tests your understanding of module resolution and the module path, often appearing in questions about diagnosing missing dependencies with jdeps. A common trap is confusing 'notfound' with a missing class within a known module—remember, jdeps reports module-level, not class-level, gaps. Memory tip: think "notfound = module not on path," like a library jar you forgot to include.
1Z0-829 Java Platform Overview and Packaging Practice Question
This 1Z0-829 practice question tests your understanding of java platform overview and packaging. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 developer runs 'jdeps -s --module-path lib myapp.jar' and gets output: 'myapp.jar -> java.base, myapp.jar -> java.sql, myapp.jar -> notfound'. What does the 'notfound' entry indicate?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The application has a dependency on a package that is not provided by any module on the module path.
The 'notfound' entry in the jdeps -s output indicates that the application has a dependency on a package that is not provided by any module on the module path. The -s (summary) flag shows module-level dependencies, and when a required module cannot be located among the specified modules or the JDK's built-in modules, jdeps reports it as 'notfound'. This means the dependency cannot be resolved at analysis time, typically because the required module is missing from the module path.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
The application has a dependency on a package that is not provided by any module on the module path.
Why this is correct
The 'notfound' indicates an unknown dependency that cannot be resolved to any module.
Related concept
Read the scenario before looking for a memorised answer.
✗
The dependency is resolved but its module name is not printed due to a summary flag.
Why it's wrong here
The -s flag prints summary; if resolved, it would print the module name, not 'notfound'.
✗
The jar file is missing or corrupt.
Why it's wrong here
jdeps analyzes the given jar; if the jar itself were missing, jdeps would fail with an error, not show 'notfound'.
✗
There is a cyclic dependency among modules.
Why it's wrong here
Cyclic dependencies are reported as cycles, not 'notfound'.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse 'notfound' with a missing JAR file or a corrupt archive, but jdeps specifically reports unresolved module dependencies, not file system errors.
Trap categories for this question
Command / output trap
jdeps analyzes the given jar; if the jar itself were missing, jdeps would fail with an error, not show 'notfound'.
Detailed technical explanation
How to think about this question
Under the hood, jdeps uses the module resolution algorithm defined in the Java Platform Module System (JPMS) to analyze dependencies. When a module is 'notfound', it means the module graph cannot be completed because the required module is not present on the module path or in the JDK's runtime images. In real-world scenarios, this often occurs when a third-party library is not modularized or when the module path is incorrectly configured, leading to ClassNotFoundException or NoClassDefFoundError at runtime.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
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
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Java Platform Overview and Packaging — This question tests Java Platform Overview and Packaging — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The application has a dependency on a package that is not provided by any module on the module path. — The 'notfound' entry in the jdeps -s output indicates that the application has a dependency on a package that is not provided by any module on the module path. The -s (summary) flag shows module-level dependencies, and when a required module cannot be located among the specified modules or the JDK's built-in modules, jdeps reports it as 'notfound'. This means the dependency cannot be resolved at analysis time, typically because the required module is missing from the module path.
What should I do if I get this 1Z0-829 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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