Java EE 8 behavior changes
If you previously incorporated Java Platform, Enterprise Edition (Java EE) 7 features in your Liberty environment, you might encounter behavior changes when you move to a Java EE 8 feature.
You can choose between the Java EE 7 and Java EE 8 feature implementations for each server instance, with consideration for behavior changes. If the required behavior is contained in the Java EE 8 feature only, you must use the Java EE 8 feature. If an existing application would be adversely affected by behavior changes in the Java EE 8 feature, using the Java EE 7 feature preserves the existing behavior for that application. You must ensure that the Java EE implementation that you choose is compatible with other Java EE features in your server; for more information, see Supported Java EE 7 and 8 feature combinations.
| Technology | Java EE 7 feature | Java EE 8 feature | Behavior changes |
|---|---|---|---|
| Application Security | appSecurity-2.0 |
appSecurity-3.0 |
No behavior changes. |
| Bean Validation | beanValidation-1.1 |
beanValidation-2.0 |
No behavior changes. |
| Contexts and Dependency Injection for Java (CDI) | cdi-1.2 |
cdi-2.0 |
See Contexts and Dependency Injection behavior changes between releases. |
| Java Servlet | servlet-3.1 |
servlet-4.0 |
See Servlet 4.0 behavior changes. |
| Java API for RESTful Web Services (JAX-RS) | jaxrs-2.0 |
jaxrs-2.1 |
See JAX-RS 2.1 behavior changes. |
| Java Persistence API (JPA) | jpa-2.1 |
jpa-2.2 |
See No behavior changes. |
| JSON Processing (JSON-P) | jsonp-1.0 |
jsonp-1.1 |
See No behavior changes. |
| JavaServer Faces (JSF) | jsf-2.2 |
jsf-2.3 |
See Configuring Liberty for JavaServer Faces 2.3. |
| JavaMail | javaMail-1.5 |
javaMail-1.6 |
No behavior changes. |