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Understanding functional and technical aspects of Java SE 11 Developer Exam Number: 1Z0-819

The following will be discussed in the ORACLE 1Z0-006 exam dumps pdf:

  • Perform decomposition and reduction, including grouping and partitioning on sequential and parallel streams
  • Use a Java array and List, Set, Map and Deque collections, including convenience methods
  • Implement functional interfaces using lambda expressions, including interfaces from the java.util.function package
  • Use Java Streams to filter, transform and process data
  • Use generics, including wildcards
  • Sort collections and arrays using Comparator and Comparable interfaces
  • Create worker threads using Runnable and Callable, and manage concurrency using an ExecutorService and java.util.concurrent API
  • Develop thread-safe code, using different locking mechanisms and java.util.concurrent API

Reference: https://education.oracle.com/java-se-11-developer/pexam_1Z0-819?intcmp=WWOUBLOGPOSTLADJAVA082913

Oracle 1z1-819 Exam Syllabus Topics:

SectionWeightObjectives
Exception Handling and Assertions8-12%- Use assertions appropriately
- Create custom exceptions and use standard exceptions
- Use try-catch-finally, try-with-resources, throw and throws
Lambda Expressions and Streams12-18%- Define and use functional interfaces and lambda expressions
- Use Optional class and primitive type streams
- Create and use stream pipelines, including intermediate and terminal operations
Java Object-Oriented Approach15-20%- Declare and instantiate classes, interfaces, abstract classes and nested classes
- Apply encapsulation, inheritance, polymorphism and abstraction
- Overload and override methods, use constructors and initializers
- Use local variable type inference
Working with Java Data Types10-15%- Handle text using String, StringBuilder and StringBuffer classes
- Manipulate numeric values and formatting
- Use primitives and wrapper classes, including operators, parentheses, type promotion and casting
Java I/O and NIO.28-12%- Manage files, directories and file attributes with java.nio.file API
- Implement serialization and deserialization
- Read and write data using streams, readers, writers and channels
Secure Coding and Localization5-8%- Apply secure coding practices, input validation and data protection
- Use Locale, ResourceBundle and formatting APIs for internationalization
Java Platform Module System8-12%- Define modules, module declarations, requires, exports, opens, uses and provides
- Use automatic modules and unnamed modules
- Compile, package and run modular applications
Arrays and Collections12-18%- Create and manipulate arrays, lists, sets, maps, queues and deques
- Use generics, wildcards and diamond notation
- Sort and search collections and arrays
Concurrency8-12%- Create and manage threads, use ExecutorService, Callable and Future
- Use parallel streams and CompletableFuture
- Use synchronization, locks, atomic variables and concurrent collections
JDBC Database Access5-8%- Process result sets, manage transactions and resources
- Connect to databases, execute queries and updates

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