double ave = ((double)100)/3;
BigDecimal df = new BigDecimal(ave);
df.setScale(1,RoundingMode.HALF_UP);
System.out.print(ave);

double ave = ((double)100)/3;
BigDecimal df = new BigDecimal(ave);
df.setScale(1,RoundingMode.HALF_UP);
System.out.print(ave);