调用系统界面 FileChooser fileChooser new FileChooser ; fileChooser setTitle "工作表格" ; fileChooser setInitialFileName "新建表格 xls" ; fileChooser getExtensionFilters add new FileChooser ExtensionFilter "XLS Files" " xls" ; File file fileChooser showSaveDialog null ;"> 调用系统界面 FileChooser fileChooser new FileChooser ; fileChooser setTitle "工作表格" ; fileChooser setInitialFileName "新建表格 xls" ; fileChooser getExtensionFilters add new FileChooser ExtensionFilter "XLS Files" " xls" [更多] showSaveDialog null ;"> 调用系统界面 FileChooser fileChooser new FileChooser ; fileChooser setTitle "工作表格" ; fileChooser setInitialFileName "新建表格 xls" ; fileChooser getExtensionFilters add new FileChooser ExtensionFilter "XLS Files" " xls" [更多]