public boolean finished( String next_token, String dest_id) throws Exception
{
BufferedReader input = new BufferedReader(new StringReader(next_token));
JSONTokener j = new JSONTokener(input);
j.nextString('\"');//return {
j.nextString('\"');//return next_token
j.nextString('\"');//return :
String token=j.nextString('\"');
boolean result=false;
if ((token == null ) || (token.compareTo("")==0))
result=true; //we reach the resource