Java tutorial
//package com.java2s; public class Main { public static final double RATE_BV = 0.15; /** * Calculate total value (dollar) fro BV point * * @param bv * @return */ public static String calBVtoDollar(String bv) { float bv_f = convertStringToFloat(bv); return String.format("%.02f", (bv_f * RATE_BV)); } public static float convertStringToFloat(String s) { try { return Float.parseFloat(s); } catch (Exception e) { return 0; } } }