How to round the double value to 2 decimal points? [duplicate]

Question

Possible Duplicate:
round double to two decimal places in java

I want to round up the double value upto 2 decimal points.

for example: I have double d=2; and the result should be result =2.00

Answer 1

Math.round(number*100.0)/100.0; 

Answer 2

double RoundTo2Decimals(double val) {             DecimalFormat df2 = new DecimalFormat("###.##");         return Double.valueOf(df2.format(val)); }