Understand the differences between JSF composite components and custom classic components. Learn when and how to use them for reusable JSF development.
Learn how to resolve the "Cannot validate component with empty value" warning in JSF 2.1 with Trinidad. Understand its root cause and apply effective fixes.
Discover the valid return types for RESTful services in Java, including void, Response, String, and GenericEntity. Learn how to handle REST responses effectively.
Learn the rules for using @QueryParam and @PathParam in RESTful APIs. Discover supported types, limitations, and how to handle default values effectively.
Choosing between iBATIS, Hibernate, and JPA? Discover the key features, strengths, and use cases for these persistence solutions in Java.
Learn the bottom-up approach for Web Services development in Java. Explore steps, tools, advantages, and challenges of exposing existing code as Web Services.
Explore JPA identifier generation strategies like AUTO, TABLE, SEQUENCE, and IDENTITY. Learn how to set up and choose the best strategy for your database and application
Learn how to retrieve specific columns using JPQL and map them to a custom class. Reduce memory usage and enhance efficiency with this approach.
Learn how to use JPA's @SecondaryTables annotation to map a single entity across multiple tables. Step-by-step examples with JUnit test cases included.
Learn how to use JPA Embeddable objects for shared mappings. Implement Address in Customer and Orders using Embeddable classes with examples and test cases.