Java examples for java.lang:Math Operation
returns a nominal percentage (like 5.2%) as a fraction (0.052).
/*// w ww. j a v a 2s. c o m Anders H?fft, note: This class was downloaded as a quick, and temprory, way of getting a BigDecimal ln() method. The code belongs to Cyclos. See comment below: This file is part of Cyclos (www.cyclos.org). A project of the Social Trade Organisation (www.socialtrade.org). Cyclos 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; either version 2 of the License, or (at your option) any later version. Cyclos is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Cyclos; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ //package com.java2s; import java.math.BigDecimal; import java.math.MathContext; public class Main { public static void main(String[] argv) throws Exception { BigDecimal bigDecimal = new BigDecimal("1234"); System.out.println(asPercentFraction(bigDecimal)); } private static final int MAX_PRECISION = 10; public static final BigDecimal ONE_HUNDRED = new BigDecimal(100.0); /** * returns a nominal percentage (like 5.2%) as a fraction (0.052). * @return the BigDecimal divided by 100. In the above example this would be 0.052. */ public static BigDecimal asPercentFraction(final BigDecimal bigDecimal) { final MathContext mathContext = new MathContext(MAX_PRECISION); return bigDecimal.divide(ONE_HUNDRED, mathContext); } }