Oracle Java 1Z0-829 exam guide covering Java 17 language behavior, flow, objects, collections, streams, and concurrency decisions.
This guide targets Oracle Java SE 17 Developer (1Z0-829). As of April 13, 2026, Oracle’s public storefront page for Java SE 17 Developer remained live, and the storefront schema on that page still showed a price of 245 USD. Oracle’s public learning-path page for Become a Java SE 17 Developer also remained live and still described the exam-prep path around object-oriented programming, Java syntax and operators, Collections, Streams, I/O, Concurrency, deployment, and new features introduced as part of JDK 17. Oracle’s public storefront is still JS-heavy, so this guide uses the current IT Mastery Oracle 1Z0-829 curriculum bundle to turn that vendor-owned coverage into a usable exam tree.
Overload resolution: The rule set Java uses to decide which method signature is actually called.
Sealed type: A class or interface that explicitly restricts which other types may extend or implement it.
Optional: Java container type used to model the possible presence or absence of a value without using null directly.
| Exam fact | Current signal |
|---|---|
| Official exam name | Java SE 17 Developer |
| Exam code | 1Z0-829 |
| Oracle storefront | live on education.oracle.com as of April 13, 2026 |
| Oracle storefront price signal | 245 USD |
| Oracle learning-path page | live on learn.oracle.com as of April 13, 2026 |
| Planning baseline used in this guide | 50 questions, 90 minutes, 68% passing, multiple choice, proctored online |
| Guide model | 13 topic chapters -> 13 section lessons |
This exam rewards exact code reading. Strong answers usually begin by classifying the stem first: compile-time legality, runtime behavior, API contract, mutability/order, or visibility/concurrency. The common trap is picking the answer that feels right if you skim the snippet instead of tracing the actual language rule.
Oracle’s public Java SE 17 storefront pages do not expose a simple public weighting table, so the chapter weights below come from the current IT Mastery Oracle 1Z0-829 curriculum bundle used to organize this guide.
| Topic | Planning weight | Chapter | Start here |
|---|---|---|---|
| Language Fundamentals and Type System | 6 | 1. Fundamentals | 1.1 Types and Operators |
| Control Flow and Exceptions | 8 | 2. Flow | 2.1 Flow and Exceptions |
| OOP, Classes, Interfaces, Inheritance and Polymorphism | 10 | 3. OOP | 3.1 Classes and Inheritance |
| Encapsulation and Object Model | 6 | 4. Objects | 4.1 Access and Contracts |
| Generics and Collections Framework | 12 | 5. Generics | 5.1 Collections and Wildcards |
| Functional Programming | 9 | 6. Lambdas | 6.1 Lambdas and Method Refs |
| Streams and Optional | 12 | 7. Streams | 7.1 Collectors and Optional |
| Modern Java 17 Features | 11 | 8. Java 17 | 8.1 Records, Sealed and Switch |
| Java Platform Module System | 6 | 9. Modules | 9.1 JPMS and Services |
| Concurrency Basics | 8 | 10. Concurrency | 10.1 Threads and Executors |
| I/O, NIO.2 and HTTP Client | 6 | 11. I/O | 11.1 Files and HTTP Client |
| Date/Time API | 3 | 12. Time | 12.1 Temporal Types |
| Annotations, Reflection and Packaging | 3 | 13. Packaging | 13.1 Annotations and Reflection |
flowchart LR
A["1. Types, control flow, OOP"] --> B["2. Collections, lambdas, streams"]
B --> C["3. Modern Java 17 features and modules"]
C --> D["4. Concurrency, I/O, time, packaging"]
does not compile from compiles but behaves differently than expected| Failure pattern | Better instinct |
|---|---|
| mentally running code before checking whether it compiles | resolve declarations, checked exceptions, and signatures first |
| treating wildcards and streams as intuition problems | use explicit rule language instead of vibes |
| forgetting modern Java 17 features are active exam territory | records, sealed types, text blocks, and modern switch matter |
| assuming concurrency or I/O behavior from framework habits | use the actual JDK contract in the stem |