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

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• Use Java Streams to filter, transform and process data
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• Use a Java array and List, Set, Map and Deque collections, including convenience methods
• Use generics, including wildcards
• Develop thread-safe code, using different locking mechanisms and java.util.concurrent API
• 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
• Implement functional interfaces using lambda expressions, including interfaces from the java.util.function package

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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:

• Handle file system objects using java.nio.file API
• Create, apply, and process annotations
• Create and use enumerations
• Understand variable scopes, apply encapsulation and make objects immutable
• Utilize polymorphism and casting to call methods, differentiate object type versus reference type
• Read and write console and file data using I/O Streams
• Create and use subclasses and superclasses, including abstract classes
• Implement serialization and deserialization techniques on Java objects
• Initialize objects and their members using instance and static initialiser statements and constructors
• Connect to and perform database SQL operations, process query results using JDBC API Annotations
• Define and use fields and methods, including instance, static and overloaded methods
• Declare, use, and expose modules, including the use of services
• Declare and instantiate Java objects including nested class objects, and explain objects' lifecycles (including creation, dereferencing by reassignment, and garbage collection)
• Create and use interfaces, identify functional interfaces, and utilize private, static, and default methods
• Deploy and execute modular applications, including automatic modules

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