From OpenSCADAWiki
The module JavaLikeCalc provides OpenSCADA with the mechanism to create dynamic functions of the user and their libraries on the Java-like language. Description of the function in the Java-like language consists in binding the parameters of the function by an algorithm. In addition, the module has the functions of the direct calculations by creating a computer controllers with the associated computational function. The module provides the mechanism of precompiling the context-dependent functions, that are used to embed the user algorithms directly in the context of the various components of OpenSCADA, that is, for example, the parameters templates of the subsystem "Data acquisition" and the Visual Control Area engine (VCA).