1Z0-829 Java I/O API and Securing Applications Practice Question
Which THREE are benefits of using the NIO.2 API over the java.io API?
⚠ Common exam trap
Candidates often assume NIO.2 always outperforms `java.io` (Option A) or conflate its channel-based I/O with automatic compression (Option D), when the exam specifically tests understanding of NIO.2's unique file system features like `FileVisitor`, symbolic links, and attribute access.
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
✓
Simplified recursive file operations using FileVisitor.
The NIO.2 API introduces the `FileVisitor` interface, which simplifies recursive file operations by allowing you to implement methods like `preVisitDirectory`, `visitFile`, and `visitFileFailed` that are automatically called during a tree walk. This eliminates the need for manual recursion and boilerplate code required in the `java.io` API, making directory traversal more efficient and less error-prone.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Better performance for all I/O operations compared to java.io.
Why it's wrong here
Performance gains vary; not all operations are faster.
- ✓
Simplified recursive file operations using FileVisitor.
Why this is correct
walkFileTree and SimpleFileVisitor simplify recursive traversal.
- ✓
Access to file attributes like creation time, owner, and permissions.
Why this is correct
NIO.2 provides attribute views for various file systems.
- ✗
Automatic file compression when writing.
Why it's wrong here
Compression is not built-in; it requires additional libraries.
- ✓
Support for symbolic links and other file system features.
Why this is correct
NIO.2 provides methods for creating and reading symbolic links.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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