code: static public void zipFolder( String srcFolder, String destZipFile, boolean addBaseFolder ) throws IOException {
          if (new File(srcFolder).isDirectory()) {
              try (FileOutputStream fileWriter = new FileOutputStream(destZipFile);
                      ZipOutputStream zip = new ZipOutputStream(fileWriter)) {
                  addFolderToZip("", srcFolder, zip, addBaseFolder); //$NON-NLS-1$
              }
          } else {
              throw new IOException(srcFolder + " is not a folder.");
          }
      }
docs: Compress a folder and its contents.
  
  @param srcFolder path to the folder to be compressed.
  @param destZipFile path to the final output zip file.
  @param addBaseFolder flag to decide whether to add also the provided base (srcFolder) folder or not.
  @throws IOException