File groupFile = ...
List<File> files = ...
for (File outFile : files) {
org.jopendocument.dom.ODSingleXMLDocument mainDoc =
org.jopendocument.dom.ODSingleXMLDocument.createFromFile(groupFile);
org.jopendocument.dom.ODSingleXMLDocument subDoc =
org.jopendocument.dom.ODSingleXMLDocument.createFromFile(outFile);
mainDoc.add(subDoc);
mainDoc.saveAs(groupFile);
}Example: List files = file1.odt, file2.odt, file3.odt Result groupFile = file1, file3, file2 The order is incorrect
