*** Java SE 11 Developer - 1Z0-819 2021***

April 2021, I got my certification, so, I decided to create these tests based on my experience. I created these tests trying to simulate as much as I could, the type of question and types of responses.

You will find questions for each topic of the certification.

Certification Information:

• Format: Multiple Choice

• Duration: 90 Minutes

• Number of Questions: 50

• Passing Score: 68%

Practice Exam Information:

• Format: Multiple Choice

• Number of Questions: 100

• Passing Score: 68%

Exam Topics:

• Domain 1: Working with primitives, enumerators, text values & wrapper classes

  • Utilizing wrapper classes and primitives alongside operators, casting, parentheses and type promotion

  • Best practices for creating loops, switch statements and if/else statements and using them

  • Skills for creating enumerations and using them

  • Management of text through StringBuilder& Strings classes

  
  

• Domain 2: Exception Handling

  • Managing exceptions in Java programs through different tools such as multi-catch statements, try/catch/finally clauses and try-with-resource statements

  • Creating custom exceptions and their ideal utilization

  
  

• Domain 3: Operations with Lambda expressions and Streams

  • Utilization of Java Streams for data operations such as filtering, processing, and transformation

  • Implementation of Functional Interfaces by leveraging the functionalities of Lambda Expressions, alongside interfaces in the Java .util.function package

  • Using Streams along with Parallel Streams for various tasks such as reduction & decomposition as well as partitioning and grouping

  
  

• Domain 4: Concurrency

  • Creation of worker threads through Callable, Runnable alongside using ExecutorService such as Java .util.concurrent API for concurrent execution of tasks

  • Development of thread-safe code and use of concurrent collections

  
  

• Domain 5: Coding Security for Java SE Application Development

  • Implementation of data integrity guidelines for processes such as inclusion, input validation, and injections

  • Prevention of external attacks on code through restrictions on extensibility and accessibility alongside ensuring ideal management of mutability and input validation

  • Restricting Denial of Service in Java applications

  
  

• Domain 6: Localization

  This domain tests candidates’ knowledge for ensuring localization in Java applications by leveraging resource bundles, Locale, Java APIs formatting messages, numbers, and dates.

  
  

• Domain 7: Java Object-Oriented Approach

  • Declaration and instantiation of Java objects

  • Fields and methods

  • Initialization statements

  • Constructors, variable scopes and encapsulation

  • Subclasses &superclasses

  • Polymorphism

  • Local variable type inference

  • Functional and private interfaces

  
  

• Domain 8: Arrays & Collections

  • Generic classes and methods with wildcards and diamond notation

  • Use of List, Map, Deque and Set collections

  • Sorting arrays & collections

  
  

• Domain 9: Java Platform Module System,

  • Shifting to modular application design

  • Deployment and execution of modular applications

  • Declaration of modules and enabling access between them

  
  

• Domain 10: Java I/O API

  • Reading and writing console & file data by using I/O systems.

  • Management of file system objects by leveraging java.nio.file API

  • Implementing serialization techniques for Java objects

  
  

• Domain 11: Database Applications with JDBC

  • Connect to and perform database operations using PreparedStatement

  
  

• Domain 12: Annotations

  • Create, apply, and process annotations