如何在javafx中将所有表查看器内容导出到xml？

I want to export my table viewer contents xml.I have 5 tables and i want all tables to be exported to a xml file on clicking export.I have a model which is a observablearraylist which contains another observablearraylist which contains a map.Is there any way to export my contents to xml.I want to export my table viewer contents xml.I