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1Z0-829 practice test 2026: Oracle Java SE 17 Developer

Core Java: OOP, collections, exceptions and concurrency. Topics: Java, Java SE, OOP, Java Collections Framework, Exception Handling, Multithreading. Free, timed and scored instantly, with an explanation for every answer.

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Frequently asked questions

How many questions are in the 1Z0-829 practice test?

50 questions in 90 minutes, weighted by the official exam areas: Java language, types and APIs: 10 questions; Object-oriented programming: 10 questions; Collections and generics: 10 questions; Exceptions: 8 questions; Concurrency: 7 questions; Streams, records and modern Java: 5 questions. Aim for 68% or more.

Is this 1Z0-829 mock exam free?

Free to take: sign in and sit it up to 2 times every 30 days (learners on a GeeksArray course have no limit). Every attempt draws a fresh set of questions.

Are these real 1Z0-829 exam questions?

No. They are original practice questions written against the official Oracle Java SE 17 Developer exam guide, so they cover the same areas and difficulty without copying the real exam.

What do I get after the test?

An estimated score, a breakdown by exam area so you know what to revise, and an explanation for every answer.

Before you start

The test runs in fullscreen and watches for you leaving it.

  • Pressing Esc, switching tabs or apps, or clicking a notification each count as one exit.
  • On the 4th exit the test submits automatically, with whatever you have answered so far.
  • Close other apps and silence notifications now. Keep your phone away from the screen.
  • Once started, the attempt counts even if you leave.