Intermediate Java Programming | New Java Features, Jigsaw, JShell, Concurrency & More

After completing this course, students will be able to:

• Develop modular applications in Java
• Explore the Module service loader
• Utilize the tooling that is provided in Java 11 to migrate, monitor and optimize applications
• Use the new JShell tool to quickly test java constructs
• Develop multi-threaded applications
• Work with the CompletableFuture instances introduced in Java 8
• Use JDBC to read, write and update records in a relational database
• Use the HTTP Client API introduced in Java 11
• Explore the Dependency Injection (CDI) and Persistence (JPA) API
• Apply the Introspection and Reflection APIs
• Understand the importance of Reference Objects
• Utilize Project Lombok

This in an intermediate-level Java development course geared for students experienced with Java 8 or higher programming essentials who wish to quickly get up and running with advanced Java skills. This course does not cover Java programming fundamentals.
 

Students should have practical skills equivalent to or should have received training in the following topic(s) as a prerequisite:
• TT2104-J8 Fast Track to Java 8 Programming for OO Developers (such as C+, C#, etc.) (Or Java 11 Edition)
• TT2100-J8 Introduction to Java 8 Programming for OO Developers (such as C+, C#, etc.) (Or Java 11 Edition)

Session: The Java Module system (Jigsaw) Why JigSaw?

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

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

The Module Descriptor

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

Working with Modules

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

Session: JShell JShell

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

Session: Accessing Resources Java Data Access JDBC API

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

Introduction to Annotations

• Annotations Overview
• Working with Java Annotations

The HTTP Client API

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

Introduction to CDI

• Context Dependency Injection (CDI)
• The @Inject Annotation
• The @Default Annotation
• The @Alternative Annotation
• The @Named Annotation

Overview of JPA

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

Session: More Java 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

Performance Optimizations

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

Session: Multithreading and Concurrency Introduction to Multithreading and Concurrency

• Principles of Multithreading
• The Thread class and Runnable interface
• Explore thread synchronization
• Introduce the Java Concurrency API

Concurrent Java

• Thread management using Executors
• The common thread-pool
• Submitting and controlling asynchronous tasks
• Explore the locking API

Non-blocking asynchronous tasks

• The Completable Future
• Define non-blocking processes
• Exception handling in multithreaded processes
• The Fork-Join framework

Session: Reflection and References Introspection and Reflection

• Reflection classes
• Introspection
• Dynamic invocation of methods
• Using annotations
• Type annotations
• Receiver parameter

Reference Objects

• List the kinds of object references available in Java
• Introduce Weak, Soft and Phantom Reference
• Explain the Reference Queue
• Additional Topics: Time Permitting

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

Project Lombok

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