如何使用JavaFX打开Excel文件

I'm making a project in which the user has to give in a document with data. The program reads the data and makes some diagrams. It al works perfectly but i want to open the ExcelFile when the user has saved it...So I know the directory of the Excelfile but i don't know how to open an excelfile in javaFX, can someone help me?I'm making a project in which the user has to g