JExcel

If you're looking for an easy way to integrate Microsoft Excel into your Swing applications, the JExcel library is a great option. With this library, you can solve various tasks, from displaying a workbook to embedding it within your Java apps. What's more, you don't need any specific knowledge of Microsoft Office programming to use JExcel.

One of the main advantages of JExcel is its functionality when working with Excel. You get automation of the Excel application, workbooks, and worksheets as the core functionality, which allows you to work with Excel applications, workbooks, worksheets, ranges, and cells with ease.

What's more, you can embed an Excel workbook into a Java Swing application as an ordinary Swing component using the JWorkbook component. Plus, you can add listeners for events generated by a workbook or worksheet and even handle those events to affect the application behavior with the Workbook and Worksheet JExcel classes.

JExcel even allows you to work with native peers, which are provided to allow you to add custom functionality based on JExcel. So if you're looking for a powerful and flexible way to work with Microsoft Excel and Java, the JExcel library is definitely worth considering.