December 6, 2023

RESTful Java client with

In this tutorial, we show you how to create a RESTful Java client with Java build-in HTTP client library. It’s simple to use and good enough to perform basic operations for REST service. The RESTful services from last “Jackson + JAX-RS” article will be reused, and we will use “” and “” to create a simple Java client to send “GET” and “POST” request.

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How to load for java.util.logging

In Java Logging APIs or java.util.logging, we use system property java.util.logging.config.file to define the location of the file. Normally, we put the at the src/main/resources, and project compile or build will copy it to the root of the classpath. And we can use LogManager or System.setProperty to load the programmatically.

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Jersey and HK2 dependency injection (auto scanning)

This article shows how to use HK2 dependency injection framework in Jersey and enable auto-scanning auto-discovery of the declared @Contract and @Service components. Jersey, by default, uses HK2 (Hundred-Kilobyte Kernel) for dependency injection. And the HK2 is an implementation of JSR-330(Dependency Injection for Java). For Jersey and HK2 development, we only need to declare jersey-hk2.

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