Pourquoi Json se comporte-t-il de cette manière étrange?

Y a-t-il des mots de réserve pour JSON comme une clé?

My JSON STRUCTURE est P>

public JSONObject getRequiredAttributesWithValues() {
        List<UserConstraint> constraintList = new ArrayList<UserConstraint>();
        Map<String, FactTableOptimizingInfo> factTableMap = MappingInfo.INSTANCE.
                getFactTableUserNameToFactTableOptimizingInfoMap();
        Map<String, DimensionTableInfo> dimTableMap = MappingInfo.INSTANCE.getDimTableRealNameToObjectMap();
        JSONObject requiredAttributes = getRequiredAttributes();
        JSONObject finalObject = new JSONObject();
        for (Object dimName : requiredAttributes.keySet()) {
            JSONObject dimObject = new JSONObject();
            JSONArray colNames = requiredAttributes.getJSONArray((String) dimName);
            for (Object colName : colNames) {
                List<String> columnList = new ArrayList<String>();
                String dimensionName = (String) dimName;
                String columnName = (String) colName;
                constraintList = new ArrayList<UserConstraint>();
                for (FilterDataStructure filter : this.info.getGlobalFilterList()) {
                    if (filter.getDimName().equals(dimensionName)) {
                        if (filter.getColumnName().equals(columnName)) {
                            AtomicConstraint.ConstraintType type;
                            try {
                                Integer.parseInt(filter.getValue());
                                type = AtomicConstraint.ConstraintType.INTEGER_TYPE;
                            } catch (NumberFormatException e) {
                                type = AtomicConstraint.ConstraintType.STRING_TYPE;
                            }
                            UserConstraint constraint = new UserAtomicConstraint(dimensionName, columnName, 
                                                        AtomicConstraint.getStringToOperator(filter.getOperator()),
                                                        filter.getValue(), type, factTableMap, dimTableMap);
                            constraintList.add(constraint);
                        }
                    }
                }

                columnList.add(columnName);
                List<UserDimensionInfoToBuildQuery> dimList = new ArrayList<UserDimensionInfoToBuildQuery>();
                UserTableAndColInfo groupByInfo = new UserTableAndColInfo(dimensionName, columnName);
                ArrayList<UserTableAndColInfo> groupByInfoList = new ArrayList<UserTableAndColInfo>();
                groupByInfoList.add(groupByInfo);

                UserDimensionInfoToBuildQuery dim = new UserDimensionInfoToBuildQuery(dimensionName, columnList);
                dimList.add(dim);
                UserInfoToBuildQuery.Builder queryBuilder = new UserInfoToBuildQuery.Builder(dimList).
                        groupBy(groupByInfoList);
                if (constraintList != null && !(constraintList.isEmpty())) {
                    if (constraintList.size() > 1) {
                        queryBuilder = queryBuilder.constraints(new UserComplexConstraint(constraintList,
                                ComplexConstraint.Joiner.AND));
                    } else {
                        queryBuilder = queryBuilder.constraints(constraintList.get(0));
                    }
                }
                List<Object> result = (List<Object>) DataAccessor.getData(queryBuilder.build());
                if (result == null) {
                    continue;
                }
                JSONArray valueArray = new JSONArray();

                for (Object row : result) {
                    List<Object> splitRow = (List<Object>) row;
                    valueArray.add(splitRow.get(0).toString());
                }
                dimObject.put(colName, valueArray);
            }
            finalObject.put(dimName, dimObject);
        }
        return finalObject;
    }
}