com.floreantpos.util.NumberUtil.java Source code

Introduction

Here is the source code for com.floreantpos.util.NumberUtil.java

Source

/**
 * ************************************************************************
 * * The contents of this file are subject to the MRPL 1.2
 * * (the  "License"),  being   the  Mozilla   Public  License
 * * Version 1.1  with a permitted attribution clause; you may not  use this
 * * file except in compliance with the License. You  may  obtain  a copy of
 * * the License at http://www.floreantpos.org/license.html
 * * Software distributed under the License  is  distributed  on  an "AS IS"
 * * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
 * * License for the specific  language  governing  rights  and  limitations
 * * under the License.
 * * The Original Code is FLOREANT POS.
 * * The Initial Developer of the Original Code is OROCUBE LLC
 * * All portions are Copyright (C) 2015 OROCUBE LLC
 * * All Rights Reserved.
 * ************************************************************************
 */
package com.floreantpos.util;

import java.math.BigDecimal;
import java.math.RoundingMode;
import java.text.NumberFormat;
import java.text.ParseException;

import org.apache.commons.lang.StringUtils;

public class NumberUtil {
    private final static NumberFormat numberFormat = NumberFormat.getNumberInstance();
    private final static NumberFormat numberFormat2 = NumberFormat.getNumberInstance();

    static {
        numberFormat.setMinimumFractionDigits(2);
        numberFormat.setMaximumFractionDigits(2);

        numberFormat2.setMinimumFractionDigits(3);
        numberFormat2.setMaximumFractionDigits(3);
    }

    public static double roundToTwoDigit(double value) {
        BigDecimal bd = new BigDecimal(value);
        bd = bd.setScale(2, RoundingMode.HALF_UP);
        return bd.doubleValue();
    }

    public static double roundToThreeDigit(double value) {
        BigDecimal bd = new BigDecimal(value);
        bd = bd.setScale(3, RoundingMode.HALF_UP);
        return bd.doubleValue();
    }

    public static String format3DigitNumber(Double number) {
        if (number == null) {
            return numberFormat2.format(0);
        }
        String value = numberFormat2.format(number);

        /*if (value.startsWith("-")) { //$NON-NLS-1$
           return numberFormat2.format(0);
        }*/
        return value;
    }

    public static String formatNumber(Double number) {
        if (number == null) {
            return numberFormat.format(0);
        }

        String value = numberFormat.format(number);

        if (value.startsWith("-")) { //$NON-NLS-1$
            return numberFormat.format(0);
        }

        return value;
    }

    public static Number parse(String number) throws ParseException {
        if (StringUtils.isEmpty(number)) {
            return 0;
        }

        return numberFormat.parse(number);
    }
}