RoundingMode.FLOOR - Maps..

Hi , my question is that currently it uses :
RoundingMode.FLOOR, Let's say I dont want floor or ceil, i want it to decide whether to floor or ceil..how to change the roundingmode..
thanks



      for(int i=0;i<years+1;i++)
            {
                  
                  map=new TreeMap<BigDecimal,Integer>();
                  maps.add(map);
                  for(int j=0;j<iterations;j++)
                  {      
                  
            

                        Integer  val=map.get(BigDecimal.valueOf(score[i][j]).setScale(1,RoundingMode.FLOOR));