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From Spring Boot 2 to Spring Boot 3 with Java 2...

From Spring Boot 2 to Spring Boot 3 with Java 22 and Jakarta EE

Jakarta EE 9 changed its package namespace from `javax.*` to `jakarta.*`. This may sound like a trivial change that mostly affects Jakarta EE. So, why should Spring developers care?

As it turns out, the namespace changes ripple throughout the entire Java ecosystem. And Spring is no exception. Spring Framework 6 and Spring Boot 3 raised their baseline to Jakarta EE 9 API level which is supported by Tomcat 10 and Jetty 11 for example.

Attending this session will teach you how to make this migration as smooth as possible. A live coding demo will take you through the steps involved, and point out where to pay special attention.

We will also briefly examine some of the changes planned for **Jakarta EE 11** that will prepare you for what to expect in future versions of Spring.

ivargrimstad

August 23, 2024
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  1. From Spring Boot 2 To Spring Boot 3 with Java

    2122 and Jakarta EE Ivar Grimstad
 Jakarta EE Developer Advocate Eclipse Foundation LAOUC Community Tour 2024
  2. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) Speci fi cation Document API TCK Final Speci fi cation Compatible Implementation(s) Speci fi
  3. Jakarta EE 10 Web Pro fi Jakarta EE 10 Platform

    Updated Not Updated New Authorization 2.1 Activation 2.1 Batch 2.1 Connectors 2.1 Mail 2.1 Messaging 3.1 Enterprise Beans 4.0 RESTful Web Services 3.1 JSON Processing 2.1 JSON Binding 3.0 Annotations 2.1 CDI Lite 4.0 Interceptors 2.1 Dependency Injection 2.0 Servlet 6.0 Server Pages 3.1 Expression Language 5.0 Debugging Support 2.0 Standard Tag Libraries 3.0 Faces 4.0 WebSocket 2.1 Enterprise Beans Lite 4.0 Persistence 3.1 Transactions 2.0 Managed Beans 2.0 CDI 4.0 Authentication 3.0 Concurrency 3.0 Security 3.0 Bean Validation 3.0
  4. Jakarta EE 10 Core Pro fi Jakarta EE 10 Web

    Pro fi le Updated Not Updated New RESTful Web Services 3.1 JSON Processing 2.1 JSON Binding 3.0 Annotations 2.1 CDI Lite 4.0 Interceptors 2.1 Dependency Injection 2.0 Servlet 6.0 Server Pages 3.1 Expression Language 5.0 Debugging Support 2.0 Standard Tag Libraries 3.0 Faces 4.0 WebSocket 2.1 Enterprise Beans Lite 4.0 Persistence 3.1 Transactions 2.0 Managed Beans 2.0 CDI 4.0 Authentication 3.0 Concurrency 3.0 Security 3.0 Bean Validation 3.0
  5. Jakarta EE 10 Core Pro fi le Updated Not Updated

    New RESTful Web Services 3.1 JSON Processing 2.1 JSON Binding 3.0 Annotations 2.1 CDI Lite 4.0 Interceptors 2.1 Dependency Injection 2.0
  6. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) Jakarta EE 10 API source level: Java SE 11 API binary level: Java SE 11 TCK run with: Java SE 11+17 App Developers (YOU) can use Java SE 17 features if you like!!
  7. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) How is this Relevant to ?
  8. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) builds on
  9. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) javax.* -> jakarta.*
  10. Authorization Activation Batch Connectors Mail Messaging Enterprise Beans RESTful Web

    Services JSON Processing JSON Binding Annotations CDI Lite Interceptors Dependency Injection Servlet Pages Expression Language Debugging Support Standard Tag Libraries Faces WebSocket Enterprise Beans Lite Persistence Transactions CDI Authentication Concurrency Security Validation Data Jakarta EE Authorization Activation Batch Connectors Mail Messaging Enterprise Beans RESTful Web Services JSON Processing JSON Binding Annotations CDI Lite Interceptors Dependency Injection Servlet Pages Expression Language Debugging Support Standard Tag Libraries Faces WebSocket Enterprise Beans Lite Persistence Transactions CDI Authentication Concurrency Security Validation Data Spring
  11. Authorization Activation Batch Connectors Mail Messaging Enterprise Beans RESTful Web

    Services JSON Processing JSON Binding Annotations CDI Lite Interceptors Dependency Injection Servlet Pages Expression Language Debugging Support Standard Tag Libraries Faces WebSocket Enterprise Beans Lite Persistence Transactions CDI Authentication Concurrency Security Validation Data Jakarta EE Spring Persistence
  12. UUID as Basic Java Type @Entity public class Item {

    @Id @GeneratedValue(strategy=GenerationType.UUID) private java.util.UUID id; private String description; … }
  13. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) Jakarta Persistence 3.2 https://jakarta.ee/speci fi cations/persistence/3.2/
  14. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) Java Records as Embeddable Classes
  15. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) @PersistenceContext EntityManger em; @Inject EntityManger em;
  16. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) PersistenceConfiguration
  17. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) Deprecate Calendar, Date, Time, Timestamp, Temporal, MapKeyTemporal, TemporalType Replace with java.time API Java Con fi guration as alternative to persistence.xml via the PersistenceConfiguration Class Lots of New Convenience methods for Criteria Language
  18. Authorization Activation Batch Connectors Mail Messaging Enterprise Beans RESTful Web

    Services JSON Processing JSON Binding Annotations CDI Lite Interceptors Dependency Injection Servlet Pages Expression Language Debugging Support Standard Tag Libraries Faces WebSocket Enterprise Beans Lite Persistence Transactions CDI Authentication Concurrency Security Validation Data Jakarta EE Spring Validation
  19. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) Jakarta Validation 3.1 https://jakarta.ee/speci fi cations/bean-validation/3.1/
  20. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) Support Java Records
  21. Authorization Activation Batch Connectors Mail Messaging Enterprise Beans RESTful Web

    Services JSON Processing JSON Binding Annotations CDI Lite Interceptors Dependency Injection Servlet Pages Expression Language Debugging Support Standard Tag Libraries Faces WebSocket Enterprise Beans Lite Persistence Transactions CDI Authentication Concurrency Security Validation Data Jakarta EE Spring Servlet
  22. Authorization Activation Batch Connectors Mail Messaging Enterprise Beans RESTful Web

    Services JSON Processing JSON Binding Annotations CDI Lite Interceptors Dependency Injection Servlet Pages Expression Language Debugging Support Standard Tag Libraries Faces WebSocket Enterprise Beans Lite Persistence Transactions CDI Authentication Concurrency Security Validation Data Jakarta EE Spring Authorization Activation Batch Connectors Mail Messaging Enterprise Beans RESTful Web Services JSON Processing JSON Binding Annotations CDI Lite Interceptors Dependency Injection Servlet Pages Expression Language Debugging Support Standard Tag Libraries Faces WebSocket Enterprise Beans Lite Persistence Transactions CDI Authentication Concurrency Security Validation Data Authorization Activation Batch Connectors Mail Messaging Enterprise Beans RESTful Web Services JSON Processing JSON Binding Annotations CDI Lite Interceptors Dependency Injection Servlet Pages Expression Language Debugging Support Standard Tag Libraries Faces WebSocket Enterprise Beans Lite Persistence Transactions CDI Authentication Concurrency Security Validation Data
  23. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) Demo
  24. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) New Spring App Scenario 1
  25. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) Upgrade Spring App Scenario 2
  26. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) javax.* -> jakarta.*
  27. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) IDE
  28. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) 1. Update Spring version in pom.xml 2. Update Jakarta EE version in pom.xml 3. Fix the imports https://github.com/ivargrimstad/jakartaee-spring
  29. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) Upgrade Spring App Scenario 3 with Dependencies
  30. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) 1. Update Spring version in pom.xml 2. Update Jakarta EE version in pom.xml 3. Fix the imports 4. Repeat for Dependencies https://github.com/ivargrimstad/jakartaee-spring
  31. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) Upgrade Spring App Scenario 4 with Transitive Dependencies
  32. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) Transformation
  33. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) 1. Update Spring version in pom.xml 2. Update Jakarta EE version in pom.xml 3. Fix the imports 4. Repeat for Dependencies 5. Transform Libraries if necessary https://github.com/ivargrimstad/jakartaee-spring
  34. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) Additional Migration Steps
  35. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) 1. Update Spring version in pom.xml 2. Update Jakarta EE version in pom.xml 3. Fix the imports 4. Repeat for Dependencies 5. Transform Libraries if necessary 6. Rename properties pre fi xed with javax 7. Verify data and dynamic content https://github.com/ivargrimstad/jakartaee-spring
  36. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) Beyond 10
  37. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) Boost Performance and Developer Productivity with Jakarta EE 11 Sala 3 Today at 15:??
  38. COPYRIGHT (C) 2022, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) Summary
  39. Jakarta EE 10 Platform Updated Not Updated New Authorization 2.1

    Activation 2.1 Batch 2.1 Connectors 2.1 Mail 2.1 Messaging 3.1 Enterprise Beans 4.0 RESTful Web Services 3.1 JSON Processing 2.1 JSON Binding 3.0 Annotations 2.1 CDI Lite 4.0 Interceptors 2.1 Dependency Injection 2.0 Servlet 6.0 Server Pages 3.1 Expression Language 5.0 Debugging Support 2.0 Standard Tag Libraries 3.0 Faces 4.0 WebSocket 2.1 Enterprise Beans Lite 4.0 Persistence 3.1 Transactions 2.0 Managed Beans 2.0 CDI 4.0 Authentication 3.0 Concurrency 3.0 Security 3.0 Bean Validation 3.0
  40. Authorization 3.0 Activation 2.1 Batch 2.1 Connectors 2.1 Mail 2.1

    Messaging 3.1 Enterprise Beans 4.0 RESTful Web Services 3.2 JSON Processing 2.1 JSON Binding 3.0 Annotations 3.0 CDI Lite 4.1 Interceptors 2.2 Dependency Injection 2.0 Servlet 6.1 Pages 4.0 Expression Language 6.0 Debugging Support 2.0 Standard Tag Libraries 3.0 Faces 4.1 WebSocket 2.2 Enterprise Beans Lite 4.0 Persistence 3.2 Transactions 2.0 CDI 4.1 Authentication 3.1 Concurrency 3.1 Security 4.0 Validation 3.1 Jakarta EE 11 Platform Updated Not Updated New Data 1.0 Under Developm ent
  41. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) How is Relevant to
  42. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) builds on
  43. Jakarta EE Spring Authorization Activation Batch Connectors Mail Messaging Enterprise

    Beans RESTful Web Services JSON Processing JSON Binding Annotations CDI Lite Interceptors Dependency Injection Servlet Pages Expression Language Debugging Support Standard Tag Libraries Faces WebSocket Enterprise Beans Lite Persistence Transactions CDI Authentication Concurrency Security Validation Data Jakarta EE 11 Platform
  44. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) javax.* -> jakarta.*
  45. COPYRIGHT (C) 2024, ECLIPSE FOUNDATION, INC. | THIS WORK IS

    LICENSED UNDER A CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE (CC BY 4.0) 1. Update Spring version in pom.xml 2. Update Jakarta EE version in pom.xml 3. Fix the imports 4. Repeat for Dependencies 5. Transform Libraries if necessary 6. Rename properties pre fi xed with javax 7. Verify data and dynamic content https://github.com/ivargrimstad/jakartaee-spring
  46. Jakarta EE https://jakarta.ee Get Started
 https://start.jakarta.ee Ivar’s Hashtag Jakarta EE

    https://www.agilejava.eu/category/jakarta-ee/ Demo Code https://github.com/ivargrimstad/jakartaee-spring