Jakarta Packages

About

Jakarta Packages refer to standard APIs that come from the Jakarta EE (formerly Java EE) specification. These are not part of core Java but are part of the official set of enterprise-grade specifications for building Java-based applications.

• Jakarta EE is managed by the Eclipse Foundation, and it encompasses a variety of libraries for building web applications, microservices, RESTful services, messaging, data access, and more.

• These packages include specifications that provide a consistent, standardized API for developers across different Jakarta EE-compliant implementations (such as Payara, WildFly, GlassFish, etc.).

Key Points:

• Jakarta Packages are not part of the standard JDK but are widely used in enterprise-level applications.

• Jakarta EE is the successor of Java EE, now under the Eclipse Foundation.

• These libraries are generally included with Jakarta EE runtime or can be added as dependencies in your project.

Examples

• jakarta.persistence – For Object-Relational Mapping (ORM) with JPA.

• jakarta.servlet – For building web applications using Servlets.

• jakarta.validation – For Bean Validation, allowing the validation of object fields using annotations like @NotNull, @Size, etc.

• jakarta.ws.rs – For building RESTful web services.

These packages are designed to ensure cross-platform compatibility and interoperability across all Jakarta EE compliant environments. If your application is built using Jakarta EE, these APIs are typically used to handle key functionalities like validation, persistence, and web services.