Convert Word DOC to EPUB using Java. For further details: https://kb.aspose.com/words/java/convert-word-doc-to-epub-using-java/

Convert Word DOC to EPUB using Java.java

import com.aspose.words.*;
import java.awt.*;
public class Main
{
    public static void main(String[] args) throws Exception // Convert DOCX to EPUB in Java
    {
        new License().setLicense("License.lic"); //To avoid watermark
        Document wordDoc = new Document("SampleFile.docx");

        HtmlSaveOptions optionsForEpub = new HtmlSaveOptions();
        optionsForEpub.setDocumentSplitCriteria(DocumentSplitCriteria.HEADING_PARAGRAPH);
        optionsForEpub.setSaveFormat(SaveFormat.EPUB);

        wordDoc.save("output.epub", optionsForEpub);
    }
}