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:

Implement functional interfaces using lambda expressions, including interfaces from the java.util.function package
Sort collections and arrays using Comparator and Comparable interfaces
Perform decomposition and reduction, including grouping and partitioning on sequential and parallel streams
Use generics, including wildcards
Use Java Streams to filter, transform and process data
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
Use a Java array and List, Set, Map and Deque collections, including convenience methods

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Oracle 1Z0-819 Exam Syllabus Topics:

Topic	Details
Topic 1	Understand variable scopes, apply encapsulation and make objects immutable Connect to and perform database SQL operations, process query results using JDBC API
Topic 2	Create and use interfaces, identify functional interfaces Initialize objects and their members using instance and static initialiser statements and constructors
Topic 3	Deploy and execute modular applications, including automatic modules Implement functional interfaces using lambda expressions
Topic 4	Handle text using String and StringBuilder classes Utilize polymorphism and casting to call methods, differentiate object type versus reference type
Topic 5	Define and use fields and methods, including instance, static and overloaded methods Working with Arrays and Collections
Topic 6	Use primitives and wrapper classes, including, operators, parentheses, type promotion and casting Sort collections and arrays using Comparator and Comparable interfaces
Topic 7	Create and use subclasses and superclasses, including abstract classes Use local variable type inference, including as lambda parameters
Topic 8	Implement serialization and deserialization techniques on Java objects Declare and instantiate Java objects including nested class objects
Topic 9	Develop code that mitigates security threats such as denial of service Use Java Streams to filter, transform and process data

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

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