Tree to JSON Conversion

Following code will convert a tree into JSON data, without using JSONObject.

More specifically it will output the required JSON data for a Zapatec tree !

 private Stack stack = new Stack();
 public StringBuffer toJSONString(GenericNode currentNode){
  if (currentNode != null) {
   sb.append("{ label: \"").append(currentNode.getCurrentNode().getBudgetDescription()).append("\",");
   stack.push("}");
   sb.append("attributes: {").append("id: \"").append(currentNode.getCurrentNode().getBudgetId()).append("\"}");
  }
  if (currentNode != null && currentNode.hasChildren()){
   sb.append(", children : [ ");
   stack.push("]}");
   for (GenericNode node : currentNode.getChildren()) {
    toJSONString(node);
   }
   if (stack.size()>0) {
    sb.deleteCharAt(sb.length()-1);
    sb.append(stack.pop());
   }
  } else sb.append("},");
  return sb;
 }