ORACLE-JAVA-SE-25-DEVELOPER: Java SE 25 Developer Professional
Master the Oracle Certified Professional: Java SE 25 Developer exam (1Z0-831) — object-oriented programming with classes, records, sealed types, interfaces and enums; core language mechanics, text blocks and the Date-Time API; flow control with pattern-matching switch; exception handling and try-with-resources; the Java I/O and NIO.2 file APIs; arrays, collections, sequenced collections and generics; streams, lambdas and the new Stream Gatherers; concurrency with virtual threads, executors and scoped values; and the module system, compact source files, instance main methods and localization — all on the Java SE 25 LTS.
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Official Exam Details
| Duration | 120 minutes |
| Questions | 50 |
| Passing Score | 68% |
| Exam Cost | $245 USD |
| Testing Provider | Oracle University / Pearson VUE (online proctored or test center) |
| Validity | Does not expire (Oracle Certified Professional credentials for Java SE do not require recertification) |
| Prerequisites | None (working Java programming experience recommended) |
| Question Types | Multiple choice, Multiple response |
Domain Breakdown
| Domain | Questions |
|---|---|
| Applying Object-Oriented Principles in Java | 50 |
| Java Language Fundamentals: Types, Text, Date/Time and Flow Control | 40 |
| Exception Handling and Java I/O | 30 |
| Using Arrays, Collections and Generics | 28 |
| Processing Data Using Streams and Lambda Expressions | 38 |
| Implementing Concurrency and Multithreading | 34 |
| Modules, Packaging, Deployment and Localization | 30 |
Frequently Asked Questions
What is the passing score for the Java SE 25 Developer Professional exam?
The passing score for Java SE 25 Developer Professional (ORACLE-JAVA-SE-25-DEVELOPER) is 68%. Our practice exams use an 80% threshold to help you build confidence before the real test.
How long is the Java SE 25 Developer Professional exam?
The official Java SE 25 Developer Professional exam is 120 minutes long. You can simulate this time pressure using our Exam Mode, which includes a countdown timer and auto-submit.
How much does the Java SE 25 Developer Professional exam cost?
The Java SE 25 Developer Professional certification exam costs $245 USD. You can prepare with our 250-question practice exam for just $9 (1 year access) — a fraction of the real exam fee.
How many questions are on the Java SE 25 Developer Professional exam?
The official Java SE 25 Developer Professional exam has 50 questions. Our practice bank includes 250 exam-style questions with detailed explanations covering all 7 domains.
What are the prerequisites for Java SE 25 Developer Professional?
Prerequisites for Java SE 25 Developer Professional: None (working Java programming experience recommended). Our study materials are designed for all levels, with detailed explanations that build understanding from scratch.
How long is the Java SE 25 Developer Professional certification valid?
The Java SE 25 Developer Professional certification is valid for: Does not expire (Oracle Certified Professional credentials for Java SE do not require recertification). Plan your recertification early and use our practice exams to stay sharp.
Is the Java SE 25 Developer Professional practice exam worth it?
Yes — our 250-question practice exam includes three study modes (Study, Exam Simulation, and Flashcards with spaced repetition), detailed explanations for every answer, adaptive question selection, and progress tracking across all 7 domains. 20 practice questions are free with no account needed. Full access is $9 for 1 year.
How do I prepare for the Java SE 25 Developer Professional certification?
Start with Study Mode for instant feedback and concept learning. Switch to Exam Mode for timed practice under real conditions (120 minutes, 68% to pass). Use Flashcards with spaced repetition to retain key facts long-term. Track your readiness score across all domains.