How to copy file using FromFile in Struts java

public String copyFile(FormFile formFile, String destinationFolder,
            String outputFileName) throws IOException {

        byte[] data = new byte[1000];
       
        InputStream input = formFile.getInputStream();
        String filename = formFile.getFileName();
        new File(destinationFolder).mkdirs();
        File file = new File(destinationFolder, outputFileName);
        FileOutputStream output = new FileOutputStream(file);
        try {
            try {
                while (true) {
                    int count = input.read(data);
                    if (count == -1)
                        break;
                    output.write(data, 0, count);
                }
            } catch (Exception e) {
                e.printStackTrace();
            }

            finally {
                input.close();
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            output.close();
        }
        return filename;
    }

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