// For complete examples and data files, please go to https://github.com/aspose-words/Aspose.Words-for-Java
// The path to the documents directory.
String dataDir = Utils.getDataDir(ConvertDocumentToEPUBUysingDefaultSaveOptions.class);
// Open an existing document from disk.
Document doc = new Document(dataDir + "Document.EpubConversion.doc");

// Create a new instance of HtmlSaveOptions. This object allows us to set options that control
// how the output document is saved.
HtmlSaveOptions saveOptions = new HtmlSaveOptions();

// Specify the desired encoding.
saveOptions.setEncoding(Charset.forName("UTF-8"));

// Specify at what elements to split the internal HTML at. This creates a new HTML within the EPUB
// which allows you to limit the size of each HTML part. This is useful for readers which cannot read
// HTML files greater than a certain size e.g 300kb.
saveOptions.setDocumentSplitCriteria(DocumentSplitCriteria.HEADING_PARAGRAPH);

// Specify that we want to export document properties.
saveOptions.setExportDocumentProperties(true);

// Specify that we want to save in EPUB format.
saveOptions.setSaveFormat(SaveFormat.EPUB);

// Export the document as an EPUB file.
doc.save(dataDir + "Document.EpubConversion_out_.epub", saveOptions);