Quick Answer
The correct placement is within the directory structure com/example/util/. This is required because Java enforces a strict mapping between a package declaration and the file system hierarchy; a package named com.example.util must reside in a directory path that mirrors each dot-separated component as a subdirectory, ensuring the compiler and runtime can resolve the fully qualified class name. On the Oracle Java Foundations 1Z0-811 exam, this concept tests your understanding of how the classpath and package visibility work, often appearing as a straightforward question where the trap is choosing a flat directory like com.example.util or a reversed structure. A reliable memory tip is to think of the dots in the package name as slashes in the file path—just replace each dot with a forward slash, and you have your directory structure.
This 1Z0-811 practice question tests your understanding of java basics and syntax. 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 package named com.example.util is declared in a file. Where should the file be placed in the directory structure?
com.example.util/
Why wrong: Dots are not directory separators on file system.
util/
Why wrong: Missing com/example directories.
com/example/util/
Directory path matching package hierarchy.
com/example/util.java
Why wrong: This is a file path, not directory.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
com/example/util/
Option C is correct because Java requires that the directory structure of a package matches the package declaration. A package named `com.example.util` must be stored in a directory hierarchy `com/example/util/` so that the Java compiler and runtime can locate the class files based on the fully qualified name. This ensures that the file is accessible via the classpath or module path.
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.
com.example.util/
Why it's wrong here
Dots are not directory separators on file system.
util/
Why it's wrong here
Missing com/example directories.
com/example/util/
Why this is correct
Directory path matching package hierarchy.
Related concept
Read the scenario before looking for a memorised answer.
com/example/util.java
Why it's wrong here
This is a file path, not directory.
Common exam traps
The trap here is that candidates often confuse the package name with a file name or think the directory structure can be flattened, leading them to pick options that treat the package as a single folder or as a file extension.
Detailed technical explanation
Under the hood, the Java compiler uses the package declaration to map to the file system: each dot in `com.example.util` becomes a directory separator, so the source file must reside in `com/example/util/`. This mapping is also used by the JVM's class loader when resolving fully qualified class names. In real-world projects, build tools like Maven or Gradle enforce this structure automatically, but understanding the raw requirement is crucial for exam scenarios where manual placement is tested.
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.
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FAQ
Java Basics and Syntax — This question tests Java Basics and Syntax — Read the scenario before looking for a memorised answer..
The correct answer is: com/example/util/ — Option C is correct because Java requires that the directory structure of a package matches the package declaration. A package named `com.example.util` must be stored in a directory hierarchy `com/example/util/` so that the Java compiler and runtime can locate the class files based on the fully qualified name. This ensures that the file is accessible via the classpath or module path.
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 25, 2026
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