Introduction to Spring 5 and JPA2 Training

We offer private customized training for groups of 3 or more attendees.

Course Description

This course includes coverage of all the core Spring 5 and JPA 2 capabilities, as well as the integration capabilities provided by Spring. It provides extensive coverage of using Spring and JPA together, as well as using Spring Boot for dependency management and creating JPA-based repositories using Spring Data. All capabilities are practiced via an extensive set of hands-on labs. Spring 5 provides an evolutionary advance of Spring's powerful capabilities. The course introduces these capabilities, as well as providing guidelines on when and how to use them. It includes coverage of the three main configuration styles: Java-based (@Configuration), annotation-based (@Component), and the traditional XML-based configuration that may still play an important role in existing and new projects. It uses Spring Boot capabilities for dependency management in many of the labs. The JPA material covers all basic JPA concepts, including mapping persistent classes, and using EntityManager and EntityManagerFactory to access and manipulate persistent entities. Querying with the Java Persistence Query Language (JPQL) is covered in depth, from basic queries to more advanced queries like eager queries using left joins. It also includes coverage of advanced concepts such as collections of value objects, relationships, and inheritance and polymorphic queries. This course is hands on with labs to reinforce all the important concepts. It will enable you to build working Spring/JPA applications and give you an understanding of the important concepts and technology in a very short time.
Course Length: 5 Days
Course Tuition: $2190 (US)


Basic Java

Course Outline

Session 1:  Introduction to Spring
Overview of Spring Technology
Motivation for Spring, Spring Architecture
The Spring Framework
Spring Introduction
Declaring and Managing Beans
ApplicationContexts - The Spring Container
XML and @Component/@Named Config
Dependencies and Dependency Injection (DI)
Examining Dependencies
Dependency Inversion / Dependency Injection (DI)
DI in Spring - XML and @Autowired
Session 2:  Configuration in Depth
Java Based Configuration (@Configuration)
Overview, @Configuration, @Bean
Dependency Injection
Resolving Dependencies
Integrating Configuration Types
XML and @Component Pros/Cons
@Configuration Pros/Cons
Choosing a Configuration Style
Integrating with @Import and <import>
Bean Scope and Lifecycle
Singleton, Prototype, and Other Scopes
Configuring Scope
Bean Lifecycle / Callbacks
Externalizing Properties
Properties Files
@PropertySource, property-placeholder
Using @Value
Overview and Configuration
Activating Profiles
Session 3:  Spring Boot Overview
maven and Spring
Spring Boot Structure
Spring POMs with Boot Parents
Spring Boot Starters
Other Capabilities
Session 4:  Spring Testing
Testing and JUnit Overview
Writing Tests - Test Classes, asserts, Naming Conventions
Running Tests - IDE, maven, ...
Test Fixtures - setup and teardown
Spring TestContext Framework
Running Tests
Session 5: Introduction to Java Persistence API (JPA2)
Persistence Layers, Object-Relational Mapping (ORM), JDBC
JPA Overview
Mapping with JPA
Entities and @Entity, ids and @Id,
Generated Id Values
Basic Mapping Types
Persistence Unit and EntityManager
Persisting to the DB, the EntityManager API
Persistence Units, Config, Persistence Context
Retrieving Persistent Entities with find()
More About Mappings
Default Mappings, @Basic, @Column
Field vs. Property Access
Temporal (Date/Time) Mappings
Java 8 Data/Time Mapping
equals() and hashCode()
Logging Options (Provider based)
Session 6: Spring/JPA Integration
Spring's DataSource Support
Managing the EntityManager (EM)
LocalContainerEntityManagerFactoryBean and Container-managed EMs
JEE and JNDI Lookup of the EM
Configuration and Vendor Adaptors
Creating a JPA Repository/DAO Bean - @PersistenceUnit, @PersistenceContext
Session 7: JPA Updates and Queries
Inserting Updating, and Deleting Entities
Querying and JPQL
Entity Based Queries, SELECT ,WHERE
Query Interface, Executing Queries, Generic Queries (JPA 2)
JPQL Operators, Expressions, and Parameters
Named Queries
Additional Query Capabilities - Projection and Aggregate Query, Embedded Objects
Session 8 Transactions
TX Overview and JPA Transactions
Spring's Declarative TX Management (REQUIRED, etc.)
TX Scope and Propagation
Pointcut-based Configuration of Transactions
Session 9: The JPA Persistence Lifecycle
The Persistence Lifecycle
JPA Entity States (New, Managed, Detached, Removed), and Entity State Diagram
Persistence Context - Lifespan, Propagation
Synchronization to the DB
Versioning and Optimistic Locking
Overview, Detached Instances
Versioning, @Version, Optimistic Locking
Lifecycle Callbacks
@PrePersist, @PostPersist, etc.
Entity Listeners, @EntityListeners
Session 10: Relationships
Relationships Overview: Object Relationships, Participants, Roles, Directionality, Cardinality
Relationship Mapping
Mapping Overview (1-1, 1-N, N-1, N-N)
Unidirectional and Bidirectional
@ManyToOne, @OneToMany, @ManyToMany, @OneToOne with Table Structures
Relationship Inverse - Owning Side
Collection Types (List, Set, etc)
Cascading, Lazy and Eager Loading
Queries Across Relationships (Inner Joins, Outer Joins, Fetch Joins)
Entity Inheritance Mapping
Single Table, Joined (Table per Subclass), Table per Concrete Class Mappings
Pros and Cons of Mapping Strategies
Session 11:  Spring Web Integration
Integrating Spring with Java EE Web Apps
Using Spring beans in Wep app controller logic
Open EntityManager in View
Lazy Loading Issue in Web Apps
Open EntityManager in View Pattern
Using Spring's OpenEntityManagerInViewFilter/Interceptor
Session 12: Spring Data Introduction
Spring Data Overview
Overview and Architecture
Configuring Spring Data
Repositories and JPA Repositories
Using CrudRepository
Using Spring Data
Naming Conventions for Querying
Creating more Complex Queries
Query Configuration
Session 13: Additional Topics
Spring 5: Core Updates
JPA: Embedded Objects
JPA: Compound Primary Keys
JPA: Element Collections

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Java Programming is Used For:
Android & IOS Development Software Products Video Games Desktop GUI's
Year Created

Most Commonly Used: 
According to Oracle, three billion devices run on Java.  And, because of its real-world applications, it consistently ranks at the top of the TIOBE Programming Community Index. 

Great Career Choice: 
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Java can compile on Windows and run the same compiled file on Linux, Windows and Mac.

Great Supporting IDE's:
Over the years, coding in Java has become simpler with the introduction of open source development tools, i.e. Eclipse and NetBeans that use Java capabilities for debugging.  


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Performance can be significantly slower with Java and more memory-consuming than natively compiled languages such as C or C++.

Difficulty in Learning: 
Learning Java can be a bit challenging if you are a beginner.  However, once you get the hang of Object Oriented Programming and a decent grasp of the syntax, you will be well on your way.

Slow Start Up Times:
There is quite a bit of one-time initialization done by JDK classes before compiling as well as loading classes and verification (making sure code doesn't do evil things, all of which takes longer that some other languages such as C. 

Verbose and Complex Code:
Long, over-complicated sentences make code less readable and scannable. Compare to let's say Python, we can see how clear Python code appears: It doesn’t require semicolons; uses “and,” “or,” and “not” as operators instead of Java’s “&&,” “||,” and “!”; and generally has fewer bells and whistles such as parentheses or curly braces.

Commercial License Cost:
Companies have to prepare for the changes that Oracle will institute in 2019 . Today, the current version of Java is free and available for redistribution for general purpose computing. However, If you are a DEVELOPER, Oracle recommends you review the roadmap information for Java SE 8 and beyond and take appropriate action depending on the type of application you develop and your distribution mode.

Java Programming Job Market
Average Salary
Job Count
Top Job Locations

New York City 
San Jose
Washington D.C, 

Complimentary Skills to have along with Java Programming

- If you are an experienced Java developer, learning a complimentary language to Java should come much more naturally.  As an example JetBrains recently created the Kotlin programming language which is officially supported by Google for mobile development.  Kotlin compiles to Java bytecode and runs on the JVM; it's purported to address many of Java's shortcomings...

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