Full Practice Exam 1
120 min · 50 questions
covers: Advanced Class Design & Design Patterns, Working with Java Data Types, Text Blocks +18 more
Not started
OCP Java SE 25
Exam code 1Z0-831 · Updated Jul 2026
Practice questions for the Oracle Certified Professional, Java SE 25 Developer (1Z0-831) exam. Covers modern Java through Java 25 — stream gatherers, scoped values, flexible constructor bodies, module import declarations, compact source files and instance main methods, unnamed variables, plus records, sealed classes, pattern matching, virtual threads, and sequenced collections.
Topics covered · 21
Advanced Class Design & Design PatternsCompact Source Files & Instance Main MethodsConcurrencyWorking with Java Data TypesDate/Time API (JSR-310)Handling ExceptionsText BlocksLocalizationGenerics and CollectionsSequenced CollectionsStream APIStream GatherersLambda Expressions and Functional InterfacesPattern Matching (instanceof, switch, record patterns)Switch Expressions & StatementsRecordsSealed Classes & InterfacesJava I/O and NIO.2Java Platform Module System (JPMS)Virtual Threads & Structured ConcurrencyScoped Values
TestHoop Originals
What's included
Full mock exams
3 exams
Topic drills
21 drills
Total questions
362 across all mocks
Full mock exams
Full Practice Exam 2
120 min · 50 questions
covers: Scoped Values, Records, Sequenced Collections +18 more
Not started
Full Practice Exam 3
120 min · 50 questions
covers: Java Platform Module System (JPMS), Sealed Classes & Interfaces, Pattern Matching (instanceof, switch, record patterns) +18 more
Not started
Topic drills
Java Object-Oriented Approach
22 min · 12 questions
covers: Advanced Class Design & Design Patterns
Not started
Compact Source Files & Instance Main Methods
16 min · 9 questions
covers: Compact Source Files & Instance Main Methods
Not started
Concurrency
18 min · 10 questions
covers: Concurrency
Not started
Working with Java Data Types
20 min · 11 questions
covers: Working with Java Data Types
Not started
Date/Time API
16 min · 9 questions
covers: Date/Time API (JSR-310)
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Handling Exceptions
18 min · 10 questions
covers: Handling Exceptions
Not started
Generics and Collections
18 min · 10 questions
covers: Generics and Collections
Not started
Java I/O and NIO.2
16 min · 9 questions
covers: Java I/O and NIO.2
Not started
Lambda Expressions and Functional Interfaces
16 min · 9 questions
covers: Lambda Expressions and Functional Interfaces
Not started
Localization
16 min · 9 questions
covers: Localization
Not started
Java Platform Module System
20 min · 11 questions
covers: Java Platform Module System (JPMS)
Not started
Pattern Matching
29 min · 16 questions
covers: Pattern Matching (instanceof, switch, record patterns)
Not started
Records
18 min · 10 questions
covers: Records
Not started
Scoped Values
16 min · 9 questions
covers: Scoped Values
Not started
Sealed Classes & Interfaces
16 min · 9 questions
covers: Sealed Classes & Interfaces
Not started
Sequenced Collections
18 min · 10 questions
covers: Sequenced Collections
Not started
Stream Gatherers
18 min · 10 questions
covers: Stream Gatherers
Not started
Stream API
18 min · 10 questions
covers: Stream API
Not started
Switch Expressions & Statements
18 min · 10 questions
covers: Switch Expressions & Statements
Not started
Text Blocks
16 min · 9 questions
covers: Text Blocks
Not started
Virtual Threads
18 min · 10 questions
covers: Virtual Threads & Structured Concurrency
Not started
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About OCP Java SE 25
OCP Java SE 25 (1Z0-831) is a practice-exam pack for the Oracle Java certification track. It contains 24 timed mock exams — 362 practice questions, totalling 12 hours 21 minutes of exam time — each with a worked explanation, not just an answer key. Topics covered include Advanced Class Design & Design Patterns, Compact Source Files & Instance Main Methods, Concurrency, Working with Java Data Types, Date/Time API (JSR-310), Handling Exceptions, Text Blocks, Localization, Generics and Collections, Sequenced Collections, Stream API and Stream Gatherers. Questions target the current Java exam objectives at an advanced level. Practice questions for the Oracle Certified Professional, Java SE 25 Developer (1Z0-831) exam. Covers modern Java through Java 25 — stream gatherers, scoped values, flexible constructor bodies, module import declarations, compact source files and instance main methods, unnamed variables, plus records, sealed classes, pattern matching, virtual threads, and sequenced collections.
Topics covered
- Advanced Class Design & Design Patterns
- Compact Source Files & Instance Main Methods
- Concurrency
- Working with Java Data Types
- Date/Time API (JSR-310)
- Handling Exceptions
- Text Blocks
- Localization
- Generics and Collections
- Sequenced Collections
- Stream API
- Stream Gatherers
Practice by topic
Each topic has its own page of worked questions — the prompt, every option, why each is right or wrong, and the explanation.
- Advanced Class Design & Design Patterns (29)
- Compact Source Files & Instance Main Methods (15)
- Concurrency (16)
- Date/Time API (JSR-310) (14)
- Generics and Collections (20)
- Handling Exceptions (16)
- Java I/O and NIO.2 (15)
- Java Platform Module System (JPMS) (18)
- Lambda Expressions and Functional Interfaces (15)
- Localization (14)
- Pattern Matching (instanceof, switch, record patterns) (25)
- Records (15)
- Scoped Values (17)
- Sealed Classes & Interfaces (14)
- Sequenced Collections (15)
- Stream API (18)
- Stream Gatherers (18)
- Switch Expressions & Statements (16)
- Text Blocks (14)
- Virtual Threads & Structured Concurrency (17)
- Working with Java Data Types (21)
At a glance
- Exam code
- 1Z0-831
- Vendor
- Oracle
- Track
- Java
- Difficulty
- Advanced
- Practice questions
- 362
- Mock exams
- 24
- Total exam time
- 12 hours 21 minutes
- Topics covered
- Advanced Class Design & Design Patterns, Compact Source Files & Instance Main Methods, Concurrency, Working with Java Data Types, Date/Time API (JSR-310), Handling Exceptions, Text Blocks, Localization, Generics and Collections, Sequenced Collections, Stream API, Stream Gatherers
- Author
- TestHoop Originals
Frequently asked questions
How many practice questions does OCP Java SE 25 include?
OCP Java SE 25 includes 362 practice questions across 24 timed mock exams, each with a detailed explanation.
How long are the Oracle Java mock exams?
This pack contains 12 hours 21 minutes of timed practice across 24 mock exams, mirroring real exam conditions.
What topics does OCP Java SE 25 cover?
OCP Java SE 25 covers Advanced Class Design & Design Patterns, Compact Source Files & Instance Main Methods, Concurrency, Working with Java Data Types, Date/Time API (JSR-310), Handling Exceptions, Text Blocks, Localization, Generics and Collections, Sequenced Collections, Stream API and Stream Gatherers — the areas the Oracle Java exam objectives examine.
How hard is the 1Z0-831 exam?
OCP Java SE 25 is pitched at an advanced level and tracks the current Oracle Java objectives.
Can I try OCP Java SE 25 for free?
You can practise questions from this pack without an account. Timed mock exams and saved progress need a free sign-in.