I am trying to generate XSD(XML schema) from the XML body and below is the code I have. But I am not able to generate. What would be the alternative solution?

public ResponseEntity<Object> generateXmlSchema(@RequestBody String xml)
        throws IOException, ParseException, CustomErrorException {
    try {
        XmlParser xmlP = new XmlParser();
        xmlP.parse(xml);
        XsdGen gen = new XsdGen();
        JSONObject xsdSchema = new JSONObject();
        File xmlFile = new File(xmlPath);
        xmlFile.createNewFile();
        PrintWriter writer = new PrintWriter(xmlFile);
        writer.write(xml);
        writer.flush();
        writer.close();
        XsdGen result = gen.parse(new File(xmlPath));
        String resultObj = "`" + result + "`";
        xsdSchema.put("xsdSchema", resultObj);
        return ResponseEntity.ok().body(xsdSchema);
    } catch (Exception e) {
        log.info("error occured in generateXmlSchema: " + e.getMessage());
        throw new CustomErrorException(e.getMessage());
    }
}