For UNO, this language is called UNO-IDL and is more or less similar to Corba IDL. Specification: definition in a common language of what the component should do.For UNO, a component is made of two distinct parts: specifications and an implementation. In UNOs case a component will generally be delivered as a package containing a library (share library in C++ or jar in Java). 'A component is a system element offering a predefined service and able to communicate with other components' explains Wikipedia (Fr) (Even thought there is a definition on the English wikipedia article, I prefer the French one because of its completeness). Afterwards, I will explain what is needed to create a UNO component to help you to fully understand the different tools and their use during the tutorial. First I will explain what a component is and its main parts. This section will explain some very basic things about UNO components. If you are an experienced UNO programmer, you can still follow this tutorial to have a better view of how to use the Eclipse plugin.

This tutorial will use Eclipse and its plugin for the development, and every step will be detailed. This paper is a tutorial to guide UNO newcomers through creating their first Java component. How to create a Java component with Eclipse Introduction 1.3 Packaging and testing the component.1.2.2 The implementation language configuration page.1.1.2 Installing the development platform.1 How to create a Java component with Eclipse.

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