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Principles of REST architectural style were put forth by Dr. Roy Fielding in his thesis “Architectural Styles and the Design of Network-based Software Architectures”. One of the main principles of the style is that REST applications should be hypermedia driven , that is the change of an application's state or, in other words, transition from one resource to another, should be done by following the links. The rationale behind this principle is that all possible operations with the resource can be discovered without the need of any out-of-band documentation and if some URI changes, there is no need to change the client as it is server's responsibility to generate URIs and insert them into representations. This principle is also called Hypermedia As The Engine Of An Application state ( HATEOAS ). While the Thesis gives the prescription to use hyperlinks in the representations of resources, Hypertext Application Language (HAL) is one possible recipe for how to do desi...

Here is a link to my Getting Started with Dropwizard course on Udemy. Only $10! Dropwizard is a bunch of superb frameworks glued together to provide a fast way of building web applications including REST APIs. We'll talk about great frameworks which are parts of Dropwizard as we go over our examples. The full code for the examples can be obtained here . The simplest way to create a Dropwizard project is to use the Maven archetype called java-simple which is a part of Dropwizard. This can be accomplished either via the command line or using your favorite IDE. Let's stick to the former approach. The command below is formatted for clarity but it should be pasted as a single line to the terminal. After the project was created it can be modified using an editor or opened in an IDE. All the three IntelliJ, Eclipse and Netbeans have Maven support. An important parameter to note in the pom.xml file of the newly created project is dropwizard.version , which at ...