Java tutorial
//package com.java2s; import java.math.BigDecimal; import java.math.RoundingMode; public class Main { public static float round(double value, int places) { if (places < 0) throw new IllegalArgumentException(); BigDecimal bd = new BigDecimal(value); bd = bd.setScale(places, RoundingMode.HALF_UP); return bd.floatValue(); } }