Here you can find the source of compare(BigDecimal first, BigDecimal second)
public static int compare(BigDecimal first, BigDecimal second)
//package com.java2s; /*/*from w ww.ja v a 2s. co m*/ * Copyright (c) 2010-2012 Grid Dynamics Consulting Services, Inc, All Rights Reserved * http://www.griddynamics.com * * This library is free software; you can redistribute it and/or modify it under the terms of * the GNU Lesser General Public License as published by the Free Software Foundation; either * version 2.1 of the License, or any later version. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ import java.math.BigDecimal; public class Main { private static final double IMPRESSION = 0.1f; public static int compare(BigDecimal first, BigDecimal second) { if (areEqual(first, second)) { return 0; } return first.compareTo(second); } public static boolean areEqual(BigDecimal first, BigDecimal second) { BigDecimal rightBoundary = second.add(new BigDecimal(IMPRESSION)); BigDecimal leftBoundary = second.subtract(new BigDecimal(IMPRESSION)); return first.compareTo(rightBoundary) <= 0 && first.compareTo(leftBoundary) >= 0; } }