code: public static String generateJNISignature(Class<?>[] params) {
          StringBuilder ret = new StringBuilder();
  
          for (Class<?> param : params) {
              ret.append(getJavaSignature(param));
          }
  
          return ret.toString();
      }
docs: Construct a JNI signature string from a series of parameters.
  
  @param params
  a list of paramters
  @return a {@code String} containing the corresponding JNI signature.