By Martijn Dashorst

There are dozens of Java frameworks available in the market, yet so much of them require you to benefit designated coding options and new, usually inflexible, styles of improvement. Wicket is varied. As a component-based internet software framework, Wicket helps you to construct maintainable enterprise-grade internet purposes utilizing the ability of simple outdated Java gadgets (POJOs), HTML, Ajax, Spring, Hibernate and Maven. Wicket immediately manages country on the part point, this means that not more awkward HTTPSession gadgets. Its stylish programming version lets you write wealthy net purposes fast.

Wicket in motion is an authoritative, entire advisor for Java builders construction Wicket-based internet functions. This e-book begins with an advent to Wicket's constitution and parts, and strikes quick into examples of Wicket at paintings. Written by means of of the project's earliest and such a lot authoritative specialists, this e-book indicates you either the "how-to" and the "why" of Wicket. As you progress throughout the publication, you are going to discover ways to use and customise Wicket elements, how you can have interaction with different applied sciences like Spring and Hibernate, and the way to construct wealthy, Ajax-driven positive factors into your applications.

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Er model In the constructor, we create a new Label instance and give it two parameters: the component identifier and the text to display (the model data). The component identifier needs to be identical to the identifier in the markup file, in this case message. The text we provide as the model for the component will replace any text enclosed within the tags in the markup. To learn more about the Label component, see chapter 5. When we add a child component to the Java class, we supply the component with an identifier.

After sharing the story of how we found Wicket and introducing the motivations behind the programming model, we showed examples of what coding with Apache Wicket looks like. We hope you’ve liked our story so far! The next chapter will provide a high-level view of the most important concepts of Wicket. Feel free to skip that chapter for now if you’re more interested in getting straight to writing code. The architecture of Wicket In this chapter: ■ Learning how Wicket works ■ Understanding Wicket’s fundamental concepts Wicket is easy to use, once you grasp the core concepts, and you can be productive without needing to know the inner details of the framework.

The main reason is that they don’t provide a stateful programming model on top of the stateless HTTP. In other words, you’re on your own when it comes to managing state in your web application. HTTP: THE STATELESS PROTOCOL HTTP provides no support for extended interaction or conversations between a client and a server. Each request is always treated as independent in the sense that there is no relationship with any previous request. Requests have no knowledge of the application state on the server.

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