BarChartData

     private ChartItem getChartItem(int costType, int monthNumber, Map<Integer, Map<Integer, Integer>> mapAmounts){
                Map<Integer, Integer> mapValue = mapAmounts.get(monthNumber);
                
                if(mapValue == null)
                        return null;

                int year1 = 0, year2 = 0, value1 = 0, value2 = 0;
                
                Iterator<Integer> itr = mapValue.keySet().iterator();
                while(itr.hasNext()){
                        Integer year = (Integer) itr.next();
                        Integer value = (Integer) mapValue.get(year);

                                if(year1 == 0){
                                        year1 = year;
                                        value1 = value;
                                }
                                else if(year2 == 0){
                                        year2 = year;
                                        value2 = value;
                                }
                                else{
                                        if(costType == CURRENT_YEAR_TYPE){
                                                if(year > year1 || year > year2){
                                                        if(year1 < year2){
                                                                year1 = year;
                                                                value1 = value;
                                                        }
                                                        else{
                                                                year2 = year;
                                                                value2 = value;
                                                        }
                                                }
                                        }
                                        else{
                                                if(year < year1 || year < year2){
                                                        if(year1 > year2){
                                                                year1 = year;
                                                                value1 = value;
                                                        }
                                                        else{
                                                                year2 = year;
                                                                value2 = value;
                                                        }
                                                }
                                        }
                                }
                }
                
                int lessYear = 0, greaterYear = 0, lessYearValue = 0, greaterYearValue = 0;
                
                if(year1 > year2){
                        lessYear = year2;
                        lessYearValue = value2;
                        
                        greaterYear = year1;
                        greaterYearValue = value1;
                }
                else{
                        lessYear = year1;
                        lessYearValue = value1;
                        
                        greaterYear = year2;
                        greaterYearValue = value2;
                }
                
                String monthName = DataManager.getShortMonthNameByNumber(monthNumber);
                
                lessYear = (lessYear == 0) ? greaterYear - 1 : lessYear;
                
                String hintLabelPrev = monthName + " " + Integer.toString(lessYear);
                String hintLabelCurr = monthName + " " + Integer.toString(greaterYear);
                
                ChartItem item = new ChartItem();
                item.setUnitName(UNIT_LABEL);
                item.setMonthName(monthName);
                item.setPrevYearValue(lessYearValue);
                item.setCurrentYearValue(greaterYearValue);
                item.setHintMonthLabelPrev(hintLabelPrev);
                item.setHintMonthLabelCurr(hintLabelCurr);
                
                return item;
        }