Open Source Java Libraries

Shark Virtual Library (shark-vlibrary) allows to share trougth an web java application educational, cultural and other types of documents (e-books, researches, articles, sounds...) it is specially designed for educational purposes and institutios, Three kinds of users can manage and use the documents what are saved in diffrerent sections that you can add.

melq is a library of classes very useful to speed the development of graphical user interfaces (GUI) in Java. It also contains several classes to work with databases (PostgreSQL). All classes are meant to work together bu they do not depend of each other

openPDF is based on a several open source software products, such as iText, JPedal, CryptoApplet among others. Allow users to view/modify PDF documents and forms, barcodes generation, data extraction and signature validation.

The application shows a 3D donut, that can be rotated with two sliders in both axis. It is a simple example of what can be done with frojasg1.com platform libraries: - Zoom option for components - Multi language - Dark mode option - Automatic Undo-Redo for text components, with popup menu included - Text Search/Replace window prepared to be used. - Base components for auto-completion windows. - Automatic component relocation after redimensioning a window. - Base classes for formating text on the fly in JTextPanes - Improved JFileChooser and many other functions of all kind: - Basic functions of all kinds. - Accurate image resizing. - Function to process images, translating the image pixels with a direct color transformation function. - Classes to easy the xml file management (without validation) - JDK-17 compatibility