Migrating from Java 7 to Java 9 / Java 10 | New Features & Skills

Session: Introduction

Lesson: Introduction to Java 9

• Introduction to Java 9
• Java Community Process (JCP)
• JDK Enhancement Proposal (JEP)

Session: Evolving Interfaces

Lesson: Evolving Interfaces

• Interfaces in Java 8
• Default methods
• Static methods
• Multiple Inheritance?

Session: Lambda Expressions; Collections and Streams

Lesson: Lambda Expressions and Functional Interface

• Lambda Expression Syntax
• Functional Interfaces
• Type Inference in Java 8
• Method references

Lesson: Java 8 Collection Updates

• Introduce the ConcurrentHashMap
• Lambda expressions and Collections

Lesson: Streams

• Processing Collections of data
• The Stream interface
• Reduction and Parallelism
• Filtering collection data
• Sorting Collection data
• Map collection data
• Find elements in Stream
• Numeric Streams
• Create infinite Streams
• Sources for using Streams

Lesson: Collectors

• Creating Collections from a Stream
• Group elements in the Stream
• Multi-level grouping of elements
• Partitioning Streams

Lesson: Java 9 Collection and Stream Updates

• Factory methods for Immutable Collection types
• The takeWhile and dropWhile methods
• The Stream Iterate and ofNullable methods

Session: Additional Java 8 Enhancements

Lesson: Java Date/Time

• The Date and Calendar classes
• Introduce the new Date/Time API
• LocalDate, LocalDateTime, etc.
• Formatting Dates
• Working with time zones
• Manipulate date/time values

Lesson: Optional

• Introduce Optional
• Implement Optional attributes
• Lambda expressions and Optional

Lesson: Java 8 Concurrency Updates

• The common thread pool
• Atomic variables
• LongAdder and LongAccumulator
• CompletableFuture
• Non-blocking asynchronous tasks

Lesson: Java 9 Concurrency Updates

• Brief overview of Concurrency in Java
• Overview of CompletableFuture (Java 8)
• Subclassing the CompletableFuture
• The default Executor
• New Factory methods
• Dealing with time-outs

Session: Java 9

Lesson: New in Java 9

• Introduce some of the 'smaller' Java 9 topics
• Java versioning
• The JDK/JRE file structure
• Deprecation
• The jdeprscan tool
• Multi-Release JAR Files
• HTML 5 compliant JavaDoc

Lesson: Milling Project Coin

• Changes made to the language since Java 6
• Multi-catch
• Using effectively final variables in try-with-resources
• Suppressed Exceptions
• Binary literals
• Reserved underscore (Java 9)
• Type inference in anonymous classes (Java 9)
• @SafeVargs (updates in Java 9)
• Default and static methods in interfaces (Java 8)
• Private methods in interfaces (Java 9)

Session: The Java Module system (Jigsaw)

Lesson: Why JigSaw?

• Problems with Classpath
• Encapsulation and the public access modifier
• Application memory footprint
• Java 8’s compact profile
• Using internal JDK APIs

Lesson: Introduction to the Module System

• Introduce Project Jigsaw
• Classpath and Encapsulation
• The JDK internal APIs
• Java 9 Platform modules
• Defining application modules
• Define module dependencies
• Implicit dependencies
• Implied Readability
• Exporting packages

Lesson: The Module Descriptor

• Define module requirements
• Explain qualified exports
• Open modules for reflection
• Use ServiceLoader
• The provides and uses keywords

Lesson: Working with Modules

• Being backwards compatible
• The ModulePath and ClassPath
• Unnamed Modules
• Automatic Modules
• The JLink tool

Session: JShell

Lesson: JShell

• Introduction to JShell
• Running Expressions in JShell
• Importing packages
• Defining methods and types
• Using the JShell editor
• Save and loading state

Session: More Java 9

Lesson: Other New Java 9 Features

• Enhancements on the Optional class
• Improvements made in the Process API
• The Stack-Walking API
• The HTTP2 Client
• The Multi-Resolution API

Lesson: Performance Optimizations (Optional)

• Performance in Java 9
• Compact Strings
• String deduplication
• Ahead-Of-Time Compilation
• Hotspot Diagnostic commands
• The G1 Garbage collector
• Variable and Method Handles

Lesson: Memory Management (Optional)

• Understand memory management in Java
• Discuss the various garbage collectors
• The Garbage-First (G1) Garbage Collector