- A
Sealed Classes: A feature that allows a class or interface to restrict which other classes or interfaces may extend or implement it.
Sealed classes, finalized in Java 17, enable controlled inheritance by specifying permitted subclasses.
- B
Records: A feature that provides a compact syntax for declaring classes that are transparent holders for immutable data.
Records, standardized in Java 16, automatically generate constructor, accessors, equals, hashCode, and toString for immutable data carriers.
- C
Pattern Matching for switch (Preview): A preview feature that allows switch expressions and statements to test an expression against a pattern, enabling more concise and safe code.
Pattern matching for switch (JEP 406) is a preview in Java 17, allowing patterns in case labels to extract components and simplify code.
- D
Text Blocks: A feature that allows multi-line string literals with automatic indentation and escape handling.
Text blocks, finalized in Java 15, simplify the writing of multi-line strings by managing indentation and escape sequences.
- E
Enhanced NullPointerExceptions: A feature that allows a class to restrict which subclasses can implement it.
Why wrong: Incorrect – Enhanced NullPointerExceptions (Java 14) precisely describe which variable was null, not inheritance restriction. This definition actually describes Sealed Classes.
- F
Switch Expressions: A preview feature that allows testing an expression against a pattern using switch.
Why wrong: Incorrect – Switch Expressions are a standard feature since Java 14, not a preview. The description refers to Pattern Matching for switch (preview in Java 17).
1Z0-829 Java Platform Overview and Packaging Practice Question
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.
Match each Java 17 feature to its description.
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
Sealed Classes: A feature that allows a class or interface to restrict which other classes or interfaces may extend or implement it.
These are key features introduced or enhanced in recent Java versions including 17.
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.
- ✓
Sealed Classes: A feature that allows a class or interface to restrict which other classes or interfaces may extend or implement it.
Why this is correct
Sealed classes, finalized in Java 17, enable controlled inheritance by specifying permitted subclasses.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Records: A feature that provides a compact syntax for declaring classes that are transparent holders for immutable data.
Why this is correct
Records, standardized in Java 16, automatically generate constructor, accessors, equals, hashCode, and toString for immutable data carriers.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Pattern Matching for switch (Preview): A preview feature that allows switch expressions and statements to test an expression against a pattern, enabling more concise and safe code.
Why this is correct
Pattern matching for switch (JEP 406) is a preview in Java 17, allowing patterns in case labels to extract components and simplify code.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Text Blocks: A feature that allows multi-line string literals with automatic indentation and escape handling.
Why this is correct
Text blocks, finalized in Java 15, simplify the writing of multi-line strings by managing indentation and escape sequences.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Enhanced NullPointerExceptions: A feature that allows a class to restrict which subclasses can implement it.
Why it's wrong here
Incorrect – Enhanced NullPointerExceptions (Java 14) precisely describe which variable was null, not inheritance restriction. This definition actually describes Sealed Classes.
- ✗
Switch Expressions: A preview feature that allows testing an expression against a pattern using switch.
Why it's wrong here
Incorrect – Switch Expressions are a standard feature since Java 14, not a preview. The description refers to Pattern Matching for switch (preview in Java 17).
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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 practitioner preparing for the 1Z0-829 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which 1Z0-829 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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Java Platform Overview and Packaging — study guide chapter
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FAQ
Questions learners often ask
What does this 1Z0-829 question test?
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: Sealed Classes: A feature that allows a class or interface to restrict which other classes or interfaces may extend or implement it. — These are key features introduced or enhanced in recent Java versions including 17.
What should I do if I get this 1Z0-829 question wrong?
Identify which 1Z0-829 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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Last reviewed: Jun 11, 2026
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