Next-Level Java 11 / 13 Programming (Intermediate) | New Features, Jigsaw, JShell, Concurrency & More

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
• Lab: Defining Modules

Lesson: The Module Descriptor

• Define module requirements
• Explain qualified exports
• Open modules for reflection
• Use ServiceLoader
• The provides and uses keywords
• Lab: Modules and the ServiceLoader
• Lab: Using Reflection on modules

Lesson: Working With Modules

• Being backwards compatible
• The ModulePath and ClassPath
• Unnamed Modules
• Automatic Modules
• The JLink tool
• Lab: Migrating to modules

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
• Lab: Working With JShell

Session: Accessing Resources

Lesson: Java Data Access JDBC API

• Connecting to the Database
• Statement and PreparedStatement
• ResultSet
• Executing Inserts, Updates, and Deletes
• Controlling Transactions and Concurrency
• Lab: Intro to JDBC

Lesson: Introduction to Annotations

• Annotations Overview
• Working with Java Annotations
• Lab: Using Annotations

Lesson: The HTTP Client API

• Making HTTP (Hypertext Transfer Protocol) requests
• Explain Incubator Modules
• HTTP2 Client API
• Introduce WebSockets
• Communicate with WebSocket endpoints
• Lab: HTTP Clients

Lesson: Introduction to CDI

• Context Dependency Injection (CDI)
• The @Inject Annotation
• The @Default Annotation
• The @Alternative Annotation
• The @Named Annotation
• Lab: Introduction to CDI
• Lab: Adding CDI Qualifiers

Lesson: Overview of JPA

• Introduce the Java Persistence API (JPA)
• Benefits of Using an ORM framework
• Hibernate and JPA
• Lab: Introduction to JPA

Session: More Java

Lesson: Other New Java Features

• Enhancements on the Optional class
• Improvements made in the Process API
• The Stack-Walking API
• The HTTP2 Client
• The Multi-Resolution API
• Lab: Working with Native processes

Lesson: Performance Optimizations

• Ahead-Of-Time Compilation
• Hotspot Diagnostic commands
• Variable and Method Handles

Session: Multithreading and Concurrency

Lesson: Multithreading

• Principles of Multithreading
• Creating a Threaded Class
• Basic Features of the Thread Class
• Thread Scheduling
• Thread Synchronization
• Lab: Simple Thread Class
• Lab: Simple Runnable Class

Lesson: Concurrent Java

• Concurrent Locks are Explicit and Flexible
• Executor Interfaces Provide Thread Management
• Challenges for Concurrent Use of Collections
• Concurrent Collections
• Atomic Variables Avoid Synchronization
• Lab: Working with Concurrent Java
• Lab: Sleeping Threads
• Lab: Safe Data Access
• Lab: Producer/Consumer

Lesson: Completable Futures

• Introducing the CompletableFuture
• The common thread pool
• Non-blocking asynchronous tasks
• Defining task callback-handlers
• Lab: CompletableFuture

Lesson: Working With CompletableFuture

• Promises
• Subclassing the CompletableFuture
• The default Executor
• New Factory methods
• Dealing with time-outs
• Handling Exceptions

Session: Reflection and References

Lesson: Introspection and Reflection

• Reflection classes
• Introspection
• Dynamic invocation of methods
• Using annotations
• Type annotations
• Receiver parameter
• Lab: Introspection and Reflection
• Lab: Reflection Server

Lesson: Reference Objects

• List the kinds of object references available in Java
• Introduce Weak, Soft and PhantomReference
• Explain the ReferenceQueue

Additional Topics: Time Permitting

Lesson: Memory Management

• Understand memory management in Java
• Discuss the various garbage collectors
• The Garbage-First (G1) Garbage Collector
• The No-Op and ZGS Garbage Collectors

Lesson: Project Lombok

• Introduce the Lombok Project
• Configure the Lombok Annotation processor
• Introduce some of the commonly used Lombok annotations
• Lab: Project Lombok