Thanks for your query. You query is more related to Aspose.Slides and Aspose.Cells. I am moving this thread to Aspose.Cells forum and my colleagues will reply you shortly.
Thanks for your posting and using Aspose.Cells for Java.
Please download and use the latest Minor version: Aspose.Cells for Java v188.8.131.52
Please also get all the JDK related prerequisite libraries from the Major release: Aspose.Cells for Java 7.1.2
WorkbookSettings setting = workbook.getWorkbookSettings();
Some of the number formatting will not work and we are working on this feature now and we will try to provide a fix/version in about one month that supports to format numbers according with the Locale specified by user(settings of Workbook.Settings.Locale/Region).