How to use

optString

method

in

org.opencms.json.JSONArray

/**
 * Get the optional string value associated with an index.<p>
 *
 * It returns an empty string if there is no value at that index. If the value
 * is not a string and is not null, then it is coverted to a string.<p>
 *
 * @param index the index must be between 0 and length() - 1
 * @return a String value
 */
public String optString(int index) {
  return optString(index, "");
}

/**
 * Get the optional string value associated with an index.<p>
 * 
 * It returns an empty string if there is no value at that index. If the value
 * is not a string and is not null, then it is coverted to a string.<p>
 *
 * @param index the index must be between 0 and length() - 1
 * @return a String value
 */
public String optString(int index) {
  return optString(index, "");
}

/**
 * Converts the given JSON object into a valid parameter map.<p>
 *
 * @param params the JSON object to convert
 *
 * @return the parameter map from the given JSON object
 */
public static Map<String, String[]> getParameterMapFromJSON(JSONObject params) {
  Map<String, String[]> result = new HashMap<String, String[]>();
  Iterator<String> itKeys = params.keys();
  while (itKeys.hasNext()) {
    String key = itKeys.next();
    JSONArray paramValue = params.optJSONArray(key);
    result.put(key, new String[paramValue.length()]);
    for (int i = 0, l = paramValue.length(); i < l; i++) {
      result.get(key)[i] = paramValue.optString(i);
    }
  }
  return result;
}

List<String> formatValueList = new ArrayList<String>(formatValues.length());
for (int i = 0; i < formatValues.length(); i++) {
  formatValueList.add(formatValues.optString(i));

List formatValueList = new ArrayList(formatValues.length());
for (int i = 0; i < formatValues.length(); i++) {
  formatValueList.add(formatValues.optString(i));