Java SE (Java Platform, Standard Edition)

I currently have an Excel file which contains data that needs to be plotted. Each row contains three values: X position, Y position, and Name. I want to be able to drag and drop data cells into my Java application which would then take the data and plot it appropriately. Can anyone help me? I've done some drag and drop coding before but it's all been within Java...I've never had to get data from a different program altogether.
There's a short fuse on this and so I'd greatly appreciate any help. Thanks!