JExcel library enables easy integration of Microsoft Excel into Swing applications. JExcel can be used for solving various tasks from display of a workbook to handling Excel events and embedding a workbook into Java apps. The use of the library is very simple and doesn't require specific knowledge of Microsoft Office programming. JExcel functionality includes several aspects working with Excel. Automation of an Excel application, workbooks and worksheets is the core functionality of the JExcel library, that allows working with Excel applications, workbooks, worksheets, ranges and cells. JExcel provides the JWorkbook component, that allows embedding an Excel workbook into a Java Swing application as an ordinary Swing component. Workbook and Worksheet JExcel classes allow adding listeners for events generated by a workbook or worksheet, and event handlers to affect the application behavior. JExcel allows working with native peers, that are provided to allow a developer to add custom functionality based on JExcel.