/// <summary> Construct a JSONObject from a subset of another JSONObject.
/// An array of strings is used to identify the keys that should be copied.
/// Missing keys are ignored.
/// </summary>
/// <param name="jo">A JSONObject.
/// </param>
/// <param name="names">An array of strings.
/// </param>
/// <throws> JSONException </throws>
/// <exception cref="JSONException">If a value is a non-finite number or if a name is duplicated.
/// </exception>
public JSONObject(JSONObject jo, System.String[] names)
: this()
{
for (int i = 0; i < names.Length; i += 1)
{
try
{
putOnce(names[i], jo.opt(names[i]));
}
catch (System.Exception)
{
}
}
}
