1Z0-829 Java I/O API and Securing Applications Practice Question
A Java application running in a secure environment needs to read a file located outside the application's directory. Which approach correctly handles security?
⚠ Common exam trap
A common mix-up: candidates confuse OS-level file permissions (like `setReadable`) with Java's SecurityManager permissions, or assume that using a URL protocol bypasses security checks, when in fact the SecurityManager enforces the same policy regardless of the I/O API used.
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
✓
Grant java.io.FilePermission in the security policy file for the specific file path
In a secure Java environment, the SecurityManager enforces access controls based on the security policy file. To read a file outside the application's directory, you must explicitly grant `java.io.FilePermission` with the specific file path and the `read` action in the policy file. Without this permission, any attempt to read the file will throw a `java.security.AccessControlException`.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use FileInputStream without any additional configuration
Why it's wrong here
If a security manager is enabled, it may deny access without explicit permission.
- ✓
Grant java.io.FilePermission in the security policy file for the specific file path
Why this is correct
This grants the application permission to read the file under the security manager.
- ✗
Use java.net.URL to access the file via file:// protocol
Why it's wrong here
URL still requires permission and may not bypass security restrictions.
- ✗
Set the file readable flag using File.setReadable(true)
Why it's wrong here
This changes file system permissions, not Java security policy.
Go deeper
Related to this question
About these practice questions
This 1Z0-829 question is part of Courseiva's 513-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 1Z0-829 practice question is part of Courseiva's free Oracle certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 1Z0-829 exam.