Java tutorial
//package com.java2s; /* * Copyright (C) 2015, Jhuster, All Rights Reserved * Author: Jhuster(lujun.hust@gmail.com) * * https://github.com/Jhuster/EWeightScale * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. */ import java.text.DecimalFormat; public class Main { public static double calculateMinWeight(double height) { DecimalFormat format = new DecimalFormat("0.0"); double result = 18.5 * height * height / 10000; return Double.valueOf(format.format(result).toString()); } }