REST: Updating resources

When building RESTful APIs over HTTP the PUT method is typically used for updating, while POST is used for creating…

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REST: Deleting resources

In RESTful APIs resources are typically deleted using the HTTP DELETE method. The resource that should be deleted is identified…

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Command-line JSON processing with jq

In this post we will learn how to parse, pretty-print and process JSON from the command-line with jq. At the…

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Implementing the Proxy Pattern in Java

The Proxy Pattern Proxy is a common software design pattern. Wikipedia does a good job describing it like this: [..]…

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Quick tip: Referencing other Properties in Spring

In Spring property (or yaml) files we can reference other properties using the ${..} syntax. For example: 1 2 3…

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REST: Retrieving resources

Retrieving resources is probably the simplest REST API operation. It is implemented by sending a GET request to an appropriate…

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Extending JUnit 5

A look into the past With JUnit 4 we have the option to run test with a custom JUnit runner…

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OCR in Java with Tess4J

Optical character recognition (OCR) is the conversion of images containing text to machine-encoded text. A popular tool for this is…

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Introduction to Hypermedia REST APIs

Introduction When browsing the web we typically navigate from one site to another by following Hyperlinks. Those links make the…

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