Access2Excel convert a MSAccess database into a Excel spreadsheet. It's a pure java implementation, using POI (https://poi.apache.org/ ) and Jackcess (http://jackcess.sourceforge.net/).
java -jar Access2Excel.jar -inputFile=<inputFile> [-outputFile=<outputFile>] [-format=<format>]
where
<inputFile>: A file name to Access database (.MDB or .ACCDB)
<outputFile>: A file name to Excel streadsheet (optional, default "inputFile.xls" or "inputFile.xlsx")
<format>: Output format ("XLS" or "XLSX", optional, default "XLSX")