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Java SE 11 Programmer– 1Z0-819

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• Credential Awarded: Oracle Certified Professional Java SE 11 Developer
• Exam Number: 1Z0-819
• Target Audience: Java Developers
• Platform: Delivered via Pearson VUE
• Exam Duration: 90 minutes
• Number of Questions: 50
• Passing Score: 68%
• Digital Badge: Oracle Certified Professional Java SE 11 Developer

Exam Topics

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Working with Java data types

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• Use primitives and wrapper classes, including, operators, parentheses, type promotion and casting
• Handle text using String and StringBuilder classes
• Use local variable type inference, including as lambda parameters

Controlling Program Flow

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• Create and use loops, if/else, and switch statements

Java Object-Oriented Approach

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• Declare and instantiate Java objects including nested class objects, and explain objects' lifecycles (including creation, dereferencing by reassignment, and garbage collection)
• Define and use fields and methods, including instance, static and overloaded methods
• Initialize objects and their members using instance and static initialiser statements and constructors
• Understand variable scopes, apply encapsulation and make objects immutable
• Create and use subclasses and superclasses, including abstract classes
• Utilize polymorphism and casting to call methods, differentiate object type versus reference type
• Create and use interfaces, identify functional interfaces, and utilize private, static, and default methods
• Create and use enumerations

Exception Handling

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• Handle exceptions using try/catch/finally clauses, try-with-resource, and multi-catch statements
• Create and use custom exceptions

Working with Arrays and Collections

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• Use generics, including wildcards
• Use a Java array and List, Set, Map and Deque collections, including convenience methods
• Sort collections and arrays using Comparator and Comparable interfaces

Working with Streams and Lambda expressions

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• Implement functional interfaces using lambda expressions, including interfaces from the java.util.function package
• Use Java Streams to filter, transform and process data
• Perform decomposition and reduction, including grouping and partitioning on sequential and parallel streams

Java Platform Module System

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• Deploy and execute modular applications, including automatic modules
• Declare, use, and expose modules, including the use of services

Concurrency

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• 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

Java I/O API

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• Read and write console and file data using I/O Streams
• Implement serialization and deserialization techniques on Java objects
• Handle file system objects using java.nio.file API

Secure Coding in Java SE Application

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• Develop code that mitigates security threats such as denial of service, code injection, input validation and ensure data integrity
• Secure resource access including filesystems, manage policies and execute privileged code

Database Applications with JDBC

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• Connect to and perform database SQL operations, process query results using JDBC API

Localization

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• Implement Localization using Locale, resource bundles, and Java APIs to parse and format messages, dates, and numbers

Annotations

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• Create, apply, and process annotations