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Certification Practice / Oracle Java SE 11

Oracle Java SE 11

1Z0-819

Validates professional Java SE 11 programming skills, including object-oriented design, APIs, collections, streams, modules, exceptions, concurrency, and database access.

Duration
90 Minutes
Questions
50 Questions
Passing Score
68%
Exam Cost
Varies by region
Progress

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Practice Tests
01
Recommended

Practice Test 1

Covers Java language basics, OOP, exceptions, collections, generics, lambdas, and stream fundamentals.

50 questions 90 min
Start Test
02

Practice Test 2

Advanced practice covering modules, concurrency, localization, annotations, NIO.2, security, and JDBC scenarios.

50 questions 90 min
Start Test
Exam Domains & Weightage
Java Language & Object-Oriented Design
Core exam area
Classes - inheritance - interfaces - polymorphism - access control - nested classes
Exceptions, Assertions & APIs
Core exam area
Checked and unchecked exceptions - try-with-resources - common Java APIs - date/time
Collections, Generics, Lambdas & Streams
Core exam area
Lists, sets, maps - generics - functional interfaces - stream pipelines - optionals
Modules, Concurrency, I/O & JDBC
Advanced exam area
JPMS modules - threads and executors - NIO.2 - localization - JDBC basics
About the Exam

Who Should Take This?

  • Java developers preparing for OCP Java SE 11
  • Backend engineers validating Java skills
  • Students moving from core Java to professional Java
  • Developers working with enterprise Java stacks

Prerequisites

  • Solid Java syntax knowledge
  • Hands-on practice with collections and streams
  • Understanding of OOP and exception handling
  • Experience writing and reading Java code

Question Format

  • Multiple choice questions
  • Code output prediction
  • Compilation and runtime behavior
  • Scenario-based API questions

Exam Focus

  • Java SE 11 language features
  • Standard library APIs
  • Modules and services
  • Concurrency and database fundamentals

Exam Tips & Strategy

  • Trace Code Carefully: Many questions depend on exact compile-time or runtime behavior. Read access modifiers, overloads, and exception flow slowly.
  • Master Streams: Practice intermediate vs terminal operations, lazy execution, optionals, collectors, and primitive streams.
  • Know the Module System: Understand requires, exports, opens, uses, provides, and how module boundaries affect access.
  • Review Concurrency APIs: Focus on ExecutorService, Callable, Future, synchronization, and common thread-safety pitfalls.
  • Practice Collections: Know ordering, uniqueness, null handling, sorting, comparators, and map operations.
  • Watch for Compilation Errors: Certification questions often hide invalid imports, unreachable code, bad overrides, or generic type issues.
Next Step

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