A forum led me to this website. I nee the tools/files to output an excel file using Java Eclipse
Well, you may try to use Aspose.Cells for Java to create, manipulate, render, convert or print Ms Excel file formats (XLS, XLSX, XLSM, XLSB, XLTX, CSV, Tab Delimited, SpreadsheetML, ODS etc.) for your requirements. Aspose.Cells is a pure JAVA library/component that is used to manage MS Excel files at every level/ aspects. You may easily use Aspose.Cells in any JAVA editor e.g eclipse, IntelliJ Idea etc. in the projects.
See the Wiki Conf. Docs for your references here:
You may download standalone Aspose.Cells for JAVA demos/ examples for your reference: