Java Locale Format formatDouble(Double localDouble, int scale)

Description

Formate un double

License

Open Source License

Parameter

Parameter	Description
bigDecimal	a parameter
scale	a parameter

Declaration

public static String formatDouble(Double localDouble, int scale) 

Method Source Code

//package com.java2s;
/*//from  ww  w  . ja v  a 2 s .co m
 *
 * This file is part of Genome Artist.
 *
 * Genome Artist 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 3 of the License, or
 * (at your option) any later version.
 *
 * Genome Artist 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 Genome Artist.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

import java.text.DecimalFormat;
import java.text.DecimalFormatSymbols;

import java.util.Locale;

public class Main {
    public static final Locale LOCALE_RO = new Locale("ro", "RO");
    private static final String BASE_FORMATER_PATTERN = "##,##0";
    /**
     * Simbolurile asociate formaterului
     */
    private static DecimalFormatSymbols decimalFormatSymbols = null;
    /**
     * Formatez un numar la defaultul local
     * @param bigDecimal
     * @param scale
     * @return
     */
    private static DecimalFormat decimalFormater = null;
    private static int formaterScale = 0;

    /**
     * Formate un double
     * @param bigDecimal
     * @param scale
     * @return
     */
    public static String formatDouble(Double localDouble, int scale) {
        if (scale != formaterScale)
            initializeDecimalFormat(scale);

        return decimalFormater.format(localDouble);
    }

    /**
     * Initializez number formaterul
     * @param scale
     */
    private static void initializeDecimalFormat(int scale) {
        //Verific initializarea simbolurilor
        if (decimalFormatSymbols == null)
            initializeFormatSymbols();

        //Initializez formaterul
        if (formaterScale != scale) {
            String decimals = "";
            if (scale > 0)
                decimals = ".";
            for (int i = 0; i < scale; i++) {
                decimals += "0";
            }

            //Initializez formaterul
            decimalFormater = new DecimalFormat(BASE_FORMATER_PATTERN + decimals, decimalFormatSymbols);
        }
    }

    /**
     * Initializez simbolurile
     */
    private static void initializeFormatSymbols() {
        decimalFormatSymbols = new DecimalFormatSymbols(LOCALE_RO);
        decimalFormatSymbols.setDecimalSeparator('.');
        decimalFormatSymbols.setGroupingSeparator(',');
        decimalFormatSymbols.setMinusSign('-');
    }
}

Related

1. formatDateToSQLString(Date srcDate)
2. formatDecimal(BigInteger b)
3. formatDecimalDisplay(final double _numberToFormat, final String _formatToApply)
4. formatDouble(double in)
5. formatDouble(double inVal, int inDecs)
6. formatDouble(double number)
7. formatDouble(double v)
8. formatDouble(double val, String format)
9. formatDouble(Double valor, int decimal)