Program: 28842
Project: 28842
Buggy source:
@Handler(id="String_Node_Str",input={@HandlerInput(name="String_Node_Str",type=List.class,required=true),@HandlerInput(name="String_Node_Str",type=String.class,required=true)},output={@HandlerOutput(name="String_Node_Str",type=List.class),@HandlerOutput(name="String_Node_Str",type=String.class),@HandlerOutput(name="String_Node_Str",type=List.class),@HandlerOutput(name="String_Node_Str",type=String.class)}) public static void getMonitoringPools(HandlerContext handlerCtx){
  List<String> poolNames=(List<String>)handlerCtx.getInputValue("String_Node_Str");
  String endpoint=(String)handlerCtx.getInputValue("String_Node_Str");
  List<String> jdbcMonitorList=new ArrayList<String>();
  List<String> connectorMonitorList=new ArrayList<String>();
  String fisrtJdbc=null;
  String firstConnector=null;
  try {
    List<String> jdbcPools=new ArrayList<String>(RestUtil.getChildMap(endpoint + "String_Node_Str").keySet());
    List<String> connectorPools=new ArrayList<String>(RestUtil.getChildMap(endpoint + "String_Node_Str").keySet());
    for (    String poolName : poolNames) {
      if (jdbcPools.contains(poolName)) {
        jdbcMonitorList.add(poolName);
      }
 else       if (connectorPools.contains(poolName)) {
        connectorMonitorList.add(poolName);
      }
    }
  }
 catch (  Exception ex) {
    GuiUtil.handleException(handlerCtx,ex);
  }
  handlerCtx.setOutputValue("String_Node_Str",jdbcMonitorList);
  handlerCtx.setOutputValue("String_Node_Str",fisrtJdbc);
  handlerCtx.setOutputValue("String_Node_Str",connectorMonitorList);
  handlerCtx.setOutputValue("String_Node_Str",firstConnector);
}

Fixed version (ground truth):
@Handler(id="String_Node_Str",input={@HandlerInput(name="String_Node_Str",type=List.class,required=true),@HandlerInput(name="String_Node_Str",type=String.class,required=true)},output={@HandlerOutput(name="String_Node_Str",type=List.class),@HandlerOutput(name="String_Node_Str",type=String.class),@HandlerOutput(name="String_Node_Str",type=List.class),@HandlerOutput(name="String_Node_Str",type=String.class)}) public static void getMonitoringPools(HandlerContext handlerCtx){
  List<String> poolNames=(List<String>)handlerCtx.getInputValue("String_Node_Str");
  String endpoint=(String)handlerCtx.getInputValue("String_Node_Str");
  List<String> jdbcMonitorList=new ArrayList<String>();
  List<String> connectorMonitorList=new ArrayList<String>();
  String fisrtJdbc="String_Node_Str";
  String firstConnector="String_Node_Str";
  try {
    List<String> jdbcPools=new ArrayList<String>(RestUtil.getChildMap(endpoint + "String_Node_Str").keySet());
    List<String> connectorPools=new ArrayList<String>(RestUtil.getChildMap(endpoint + "String_Node_Str").keySet());
    for (    String poolName : poolNames) {
      if (jdbcPools.contains(poolName)) {
        jdbcMonitorList.add(poolName);
      }
 else       if (connectorPools.contains(poolName)) {
        connectorMonitorList.add(poolName);
      }
    }
  }
 catch (  Exception ex) {
    GuiUtil.handleException(handlerCtx,ex);
  }
  handlerCtx.setOutputValue("String_Node_Str",jdbcMonitorList);
  handlerCtx.setOutputValue("String_Node_Str",fisrtJdbc);
  handlerCtx.setOutputValue("String_Node_Str",connectorMonitorList);
  handlerCtx.setOutputValue("String_Node_Str",firstConnector);
}