How many questions are on the Java SE 17 Developer exam?

The Java SE 17 Developer exam has 50 questions, and the vendor's published description is: Format: Multiple Choice; Duration: 90 Minutes; Number of Questions: 50.

How long do you have to complete the Java SE 17 Developer exam?

You get 90 minutes, which is about 108 seconds per question. The published format is: Format: Multiple Choice; Duration: 90 Minutes; Number of Questions: 50.

What score do you need to pass the Java SE 17 Developer exam?

The passing score is 68% (Passing Score: 68%).

How should I use the domain weights when revising?

Weight by percentage, not by domain. 5% is the one where lost points cost you the most, and Certilum scores you per domain so you can see exactly where that is.

Does Certilum have practice questions for the Java SE 17 Developer exam?

Yes: 50 questions in our bank for this certification, each tagged to the exam domain it belongs to, with the official domain weights applied.

Exam format

Java SE 17 Developer Exam Format

1Z0-829

Everything the official exam blueprint specifies: question count, time limit, scoring and the weight each domain carries. The Java SE 17 Developer (1Z0-829) certification is a professional-grade credential designed to validate a developer's ability to design, implement, and debug applications using the Java SE 17 platform. This exam moves beyond basic syntax, requiring a deep understanding of modern language features introduced in recent LTS versions, such as Records, Sealed Classes, and enhanced Switch expressions. It tests the candidate's proficiency in handling complex data structures via the Collections framework, managing asynchronous tasks through Concurrency utilities, and utilizing the powerful Stream API for functional-style data processing. By mastering this exam, developers prove they can write clean, efficient, and maintainable code following industry best practices.

50 questions

90 min

68% to pass

12 domains

certilum

Exam facts at a glance

The published specifications for this certification.

Specification	Value
Questions	50
Time limit	90 minutes (108s per question)
Passing score	68% — Passing Score: 68%
Domains	12
Level	Associate
Question bank here	50 questions
Published format	Format: Multiple Choice; Duration: 90 Minutes; Number of Questions: 50
Source	Official exam specification, published by the vendor

Official domain weights

The percentage of the exam each domain carries. Weight your revision by these numbers, not by what you find hardest.

Domain	Weight	Topics	Practice Qs
JDBC	5%	Connections and statements Basic, prepared, callable statements Query result processing +1 more	3
Concurrency	13%	Worker threads - Runnable and Callable Thread lifecycle and Executor services Locking mechanisms and concurrent API +1 more	7
Localization	4%	Locales and resource bundles Parsing and formatting dates, times, numbers Currency and percentage values	2
I/O and NIO.2	5%	Console and file I/O streams Serialization and deserialization Path objects and java.nio.file API	3
Handling Exceptions	7%	try/catch/finally, try-with-resources Multi-catch blocks Custom exceptions	3
Supplementary Topics	3%	Annotations - Override, FunctionalInterface, Deprecated, SuppressWarnings Generics and wildcards	1
Arrays and Collections	10%	Arrays, List, Set, Map, Deque Add, remove, update, retrieve, sort elements	5
Modules and Deployment	8%	Module definitions and dependencies Expose module content for reflection Services, providers, consumers +2 more	4
Controlling Program Flow	5%	if/else, switch statements and expressions Loops, break and continue statements	2
Object-Oriented Concepts	20%	Object lifecycle, nested classes, garbage collection Classes, records, instance and static fields/methods Overloading, var-arg methods +5 more	10
Streams and Lambda Expressions	12%	Object and primitive Streams Filtering, mapping, consuming, sorting data Decomposition, concatenation, reduction +1 more	6
Handling Date, Time, Text, Numeric and Boolean Values	8%	Primitives and wrapper classes, Math API String and StringBuilder, text blocks Date-Time API - date, time, duration, period, instant, time zones	4

The heaviest domain is JDBC at 5%, and that is where lost points cost you the most. Certilum scores you per domain so you can see the difference between a knowledge gap and a formatting problem.

Note from the vendor record: Issuer is Oracle (Oracle University); the official credential title is "Oracle Certified Professional: Java SE 17 Developer" and exam 1Z0-829 is still current (live exam page with Buy Exam/Register Now, and it is still listed in the Oracle Technology Exam Subscription), with no official retirement date published. Newer Java credentials exist alongside it (Java SE 21 Developer Professional exam 1Z0-830 and Java SE 25 Developer Professional exam 1Z0-831) but they have not replaced 1Z0-829. There are no prerequisites; delivery is via Pearson VUE test centres or Oracle online proctored delivery, and Oracle's published recertification policy sets expiry only for OCI (24 months) and Cloud Applications (18 months) credentials, with no expiry stated for this Java credential. Official exam page

More about the Java SE 17 Developer exam

Explore the rest of this page series: format, cost, difficulty, requirements and how to prepare.

Exam costPrice, retakes and total budget Pass rateThe score you need Who can take itRequirements and prerequisites Study planHow to prepare, by domain

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Frequently asked questions

Everything you need to know about the Java SE 17 Developer exam.

There are 12 domains: JDBC, Concurrency, Localization, I/O and NIO.2, Handling Exceptions, Supplementary Topics, Arrays and Collections, Modules and Deployment, Controlling Program Flow, Object-Oriented Concepts, Streams and Lambda Expressions, Handling Date, Time, Text, Numeric and Boolean Values. The official weights are JDBC 5%, Concurrency 13%, Localization 4%, I/O and NIO.2 5%, Handling Exceptions 7%, Supplementary Topics 3%, Arrays and Collections 10%, Modules and Deployment 8%, Controlling Program Flow 5%, Object-Oriented Concepts 20%, Streams and Lambda Expressions 12%, Handling Date, Time, Text, Numeric and Boolean Values 8%.