Learn the steps required to create a custom generator for the OpenAPI generator tool.
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Dynamically Register Spring Beans Based on Properties
Learn how to dynamically register beans based on custom properties.
Check if a Number Is a Happy Number in Java
Learn how to check if a number is a happy or sad number in Java.
OAuth2 Backend for Frontend With Spring Cloud Gateway
In this tutorial, we implement the OAuth2 Backend for Frontend (BFF) pattern with Spring Cloud Gateway and spring-addons.
Mutable vs. Immutable Objects in Java
Learn more about the definitions, examples, advantages, and considerations of mutable and immutable objects in Java.
Access Job Parameters From ItemReader in Spring Batch
Explore how to work with JobParameters and how to access them from Spring Batch components.
Create Kubernetes Operators with the Java Operator SDK
Learn about the concept of Kubernetes operators and how we can implement them using the Java Operator SDK.
Value-Based Classes in Java
Explore value-based classes and the notion of value types in Java.
Convert One Enum to Another Enum in Java
A quick and practical guide to convert one enum to another.
How to Determine Date of the First Day of the Week Using LocalDate in Java
Learn about the date of the first day of the week from LocalDate in Java.
Load Testing Rest Endpoint Using Gatling
Learn how to use Gatling to do performance testing on any Rest endpoint.
Ahead of Time Optimizations in Spring 6
What’s the concept of AOT and how is applied in Spring 6 looking at pros and cons.
The JVM Run-Time Data Areas
Explore different types of runtime data areas and their purpose.
RESTful Microservices With RestExpress
Learn how to create a REST API using the open-source RestExpress framework.
Functors in Java
Learn what is a Java Functor.
REST vs. GraphQL vs. gRPC – Which API to Choose?
REST, GraphQL, and gRPC are solutions to different problems when calling webservices. We look at how they differ and can be combined in our architecture.
Validate an XML File Against an XSD File
Learn how to validate an XML file against an XSD file.
Document Enum in Swagger
Learn how to document enum in Swagger using the Maven plugin and verify the generated JSON document in the Swagger editor.
An Introduction to Domain Graph Service (DGS) Framework
Learn how to use the Domain Graph Service (DGS) Framework from Netflix to build a simple Spring Boot GraphQL service in Java.
Access Control Models
Explore different access control models and how applications use them to enforce access rules.