Learn various ways of extracting the request headers for a Spring application.
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Baeldung on Java
- Persistence (3)
- Java (3)
- Spring Web (2)
- Reactive (2)
- Java Collections (2)
- Web Services (1)
- Spring Persistence (1)
- Spring Data (1)
Learn two popular ways of creating a Single object in RxJava.
Explore the usage of Java Generics when it comes to producing and consuming collections.
Explore various ways of accessing the first element of a Flux.
Learn about various listeners’ options of the Mono object from Spring 5 WebFlux.
Learn various ways of iterating through large data sets retrieved with Spring Data JPA.
Learn how to use Postman to test an endpoint secured with Basic Authentication.
Let’s compare different ways of filtering Java Streams.
Learn the differences and similarities between Java 14 Records and Lombok.
Explanation about detached entities, why occurs the”Detached Entity Passed to Persist” error occurs and how to prevent it.
Learn how to group multiple constraints under a single, custom annotation to reduce code duplication and improve readability
Learn how to use JPA Specifications to query a table based on one of its associated entities.
Learn about Hibernate’s PropertyValueException. In particular, the “not-null property references a null or transient value” error message.
A quick and practical guide to distinct queries in HQL.
Explore several ways to subtract days from a date object.