Oracle Java Practice Test Hub

Last revised: June 15, 2026

Compare live Oracle Java SE 17 and Java SE 21 practice pages in IT Mastery.

Use this section to choose between the live Java SE 17 and Java SE 21 developer routes.

Oracle is the vendor and certification issuer. Oracle Java is treated as a product-family lane so candidates can compare related exam codes without mixing unrelated Oracle technologies.

Which Java Route Fits Your Goal

Current Java SE professional preparation: start with 1Z0-830 Java SE 21 Developer Professional or 1Z0-829 Java SE 17 Developer . Both have live IT Mastery practice, public sample questions, full-length free practice exams, and topic practice pages.

Routes In This Section

Exam	Certification route	Status
1Z0-829	Java SE 17 Developer	Live practice available
1Z0-830	Java SE 21 Developer Professional	Live practice available

Practice Notes

Java SE 17 and Java SE 21 are the active Oracle Java routes with IT Mastery practice. The live pages include code-reading questions, topic drills, timed practice, and explanations.

Use the Java SE 21 route for the newest Java language scope, or Java SE 17 if your exam plan still targets that certification.

What To Open Next

Official Oracle Reference

Oracle Certification

In this section

Java 17 1Z0-829 Practice Test & Mock Exam
Prepare for Java 17 1Z0-829 with a free diagnostic page, topic drills, timed mocks, detailed explanations, and the current IT Mastery question bank.
- Free Java 17 1Z0-829 Practice Questions: Core Value Types
  Practice 10 free Oracle Java SE 17 Developer (Java 17 1Z0-829) questions on Core Value Types, with answers, explanations, and the IT Mastery next step.
- Free Java 17 1Z0-829 Practice Questions: Controlling Program Flow
  Practice 10 free Oracle Java SE 17 Developer (Java 17 1Z0-829) questions on Controlling Program Flow, with answers, explanations, and the IT Mastery next step.
- Free Java 17 1Z0-829 Practice Questions: Object-Oriented Java
  Practice 10 free Oracle Java SE 17 Developer (Java 17 1Z0-829) questions on Object-Oriented Java, with answers, explanations, and the IT Mastery next step.
- Free Java 17 1Z0-829 Practice Questions: Handling Exceptions
  Practice 10 free Oracle Java SE 17 Developer (Java 17 1Z0-829) questions on Handling Exceptions, with answers, explanations, and the IT Mastery next step.
- Free Java 17 1Z0-829 Practice Questions: Working with Arrays and Collections
  Practice 10 free Oracle Java SE 17 Developer (Java 17 1Z0-829) questions on Working with Arrays and Collections, with answers, explanations, and the IT Mastery next step.
- Free Java 17 1Z0-829 Practice Questions: Streams and Lambdas
  Practice 10 free Oracle Java SE 17 Developer (Java 17 1Z0-829) questions on Streams and Lambdas, with answers, explanations, and the IT Mastery next step.
- Free Java 17 1Z0-829 Practice Questions: Packaging and Modules
  Practice 10 free Oracle Java SE 17 Developer (Java 17 1Z0-829) questions on Packaging and Modules, with answers, explanations, and the IT Mastery next step.
- Free Java 17 1Z0-829 Practice Questions: Managing Concurrent Code Execution
  Practice 10 free Oracle Java SE 17 Developer (Java 17 1Z0-829) questions on Managing Concurrent Code Execution, with answers, explanations, and the IT Mastery next step.
- Free Java 17 1Z0-829 Practice Questions: Using Java I/O API
  Practice 10 free Oracle Java SE 17 Developer (Java 17 1Z0-829) questions on Using Java I/O API, with answers, explanations, and the IT Mastery next step.
- Free Java 17 1Z0-829 Practice Questions: Accessing Databases Using JDBC
  Practice 10 free Oracle Java SE 17 Developer (Java 17 1Z0-829) questions on Accessing Databases Using JDBC, with answers, explanations, and the IT Mastery next step.
- Free Java 17 1Z0-829 Practice Questions: Implementing Localization
  Practice 10 free Oracle Java SE 17 Developer (Java 17 1Z0-829) questions on Implementing Localization, with answers, explanations, and the IT Mastery next step.
- Free Java 17 1Z0-829 Practice Questions: Logging and Annotations
  Practice 10 free Oracle Java SE 17 Developer (Java 17 1Z0-829) questions on Logging and Annotations, with answers, explanations, and the IT Mastery next step.
- Free Java 17 1Z0-829 Practice Exam: Oracle Java SE 17 Developer
  Try 50 free Oracle Java SE 17 Developer (Java 17 1Z0-829) questions across the exam domains, with explanations, then continue with IT Mastery practice.
Java 21 1Z0-830 Practice Test & Mock Exam
Prepare for Java 21 1Z0-830 with a free diagnostic page, topic drills, timed mocks, detailed explanations, and the current IT Mastery question bank.
- Free Java 21 1Z0-830 Practice Questions: Core Value Types
  Practice 10 free Oracle Java SE 21 Developer Professional (Java 21 1Z0-830) questions on Core Value Types, with answers, explanations, and the IT Mastery next step.
- Free Java 21 1Z0-830 Practice Questions: Controlling Program Flow
  Practice 10 free Oracle Java SE 21 Developer Professional (Java 21 1Z0-830) questions on Controlling Program Flow, with answers, explanations, and the IT Mastery next step.
- Free Java 21 1Z0-830 Practice Questions: Object-Oriented Java
  Practice 10 free Oracle Java SE 21 Developer Professional (Java 21 1Z0-830) questions on Object-Oriented Java, with answers, explanations, and the IT Mastery next step.
- Free Java 21 1Z0-830 Practice Questions: Handling Exceptions
  Practice 10 free Oracle Java SE 21 Developer Professional (Java 21 1Z0-830) questions on Handling Exceptions, with answers, explanations, and the IT Mastery next step.
- Free Java 21 1Z0-830 Practice Questions: Working with Arrays and Collections
  Practice 10 free Oracle Java SE 21 Developer Professional (Java 21 1Z0-830) questions on Working with Arrays and Collections, with answers, explanations, and the IT Mastery next step.
- Free Java 21 1Z0-830 Practice Questions: Streams and Lambdas
  Practice 10 free Oracle Java SE 21 Developer Professional (Java 21 1Z0-830) questions on Streams and Lambdas, with answers, explanations, and the IT Mastery next step.
- Free Java 21 1Z0-830 Practice Questions: Packaging and Deploying Java Code
  Practice 10 free Oracle Java SE 21 Developer Professional (Java 21 1Z0-830) questions on Packaging and Deploying Java Code, with answers, explanations, and the IT Mastery next step.
- Free Java 21 1Z0-830 Practice Questions: Managing Concurrent Code Execution
  Practice 10 free Oracle Java SE 21 Developer Professional (Java 21 1Z0-830) questions on Managing Concurrent Code Execution, with answers, explanations, and the IT Mastery next step.
- Free Java 21 1Z0-830 Practice Questions: Using Java I/O API
  Practice 10 free Oracle Java SE 21 Developer Professional (Java 21 1Z0-830) questions on Using Java I/O API, with answers, explanations, and the IT Mastery next step.
- Free Java 21 1Z0-830 Practice Questions: Implementing Localization
  Practice 10 free Oracle Java SE 21 Developer Professional (Java 21 1Z0-830) questions on Implementing Localization, with answers, explanations, and the IT Mastery next step.
- Free Java 21 1Z0-830 Practice Questions: Logging and Annotations
  Practice 10 free Oracle Java SE 21 Developer Professional (Java 21 1Z0-830) questions on Logging and Annotations, with answers, explanations, and the IT Mastery next step.
- Free Java 21 1Z0-830 Practice Exam: Oracle Java SE 21 Developer Professional
  Try 50 free Oracle Java SE 21 Developer Professional (Java 21 1Z0-830) questions across the exam domains, with explanations, then continue with IT Mastery practice.

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