Example usage for java.text DecimalFormat DecimalFormat

Introduction

In this page you can find the example usage for java.text DecimalFormat DecimalFormat.

Prototype

public DecimalFormat(String pattern)

Source Link

Document

Creates a DecimalFormat using the given pattern and the symbols for the default java.util.Locale.Category#FORMAT FORMAT locale.

Usage

From source file:Main.java

/**
 * formatCurrency//www. j  a v  a  2s  . com
 * @param amount the double amount to format as currency
 * @return the USD value
 */
public static String formatCurrency(double amount) {
    DecimalFormat dFormat = new DecimalFormat("#.00");
    return ("$" + dFormat.format(amount));
}

From source file:Main.java

public static String readableFileSize(long size) {
    if (size <= 0)
        return "0";
    final String[] units = new String[] { "B", "kB", "MB", "GB", "TB" };
    int digitGroups = (int) (Math.log10(size) / Math.log10(1024));
    return new DecimalFormat("#,##0.#").format(size / Math.pow(1024, digitGroups)) + " " + units[digitGroups];
}

From source file:Main.java

public static String formatValue(double value) {
    if (value > 0) {
        int power;
        String suffix = " kmbt";
        String formattedNumber = "";

        NumberFormat formatter = new DecimalFormat("#,###.#");
        power = (int) StrictMath.log10(value);
        value = value / (Math.pow(10, (power / 3) * 3));
        formattedNumber = formatter.format(value);
        formattedNumber = formattedNumber + suffix.charAt(power / 3);
        return formattedNumber.length() > 4 ? formattedNumber.replaceAll("\\.[0-9]+", "") : formattedNumber;
    } else {/*w  w w. java2 s . com*/
        return "0";
    }
}

From source file:Main.java

public static String getCompressedNumberString(int num) {
    DecimalFormat df = new DecimalFormat("0.0");
    double tg = num;
    int si = 0;/*  w  w  w  .  ja  v  a  2s.co  m*/
    while (tg > 1000) {
        tg /= 1000.0;
        si++;
    }
    if ((int) tg == num) {
        df = new DecimalFormat("0");
    } else {
        df = new DecimalFormat("0.0");
    }
    StringBuilder sb = new StringBuilder();
    sb.append(df.format(tg));
    sb.append(numberSuffixes[si]);
    return sb.toString();
}

From source file:Main.java

public static String convertNumberToString(Number value, String pattern) {
    String s = null;/*from  w  ww.  j  av  a  2s.com*/
    try {
        if (pattern == null) {
            pattern = "###########0.00";
        }
        DecimalFormat decimalFormat = new DecimalFormat(pattern);
        s = decimalFormat.format(value);
    } catch (Exception e) {
        e.printStackTrace();
    }
    return s;
}

From source file:Main.java

public static String addCommasToStringNumber(String number) {

    double num = 0;
    DecimalFormat formatter;// w w w . ja va 2s .  c o  m

    try {
        num = Double.parseDouble(number);
        formatter = new DecimalFormat("#,###");
    } catch (Exception e) {
        return number;
    }

    return formatter.format(num);
}

From source file:Main.java

public static String fileLength(long length) {
    String lenStr = null;//from   www  .j  av a2 s . c  o  m
    DecimalFormat formater = new DecimalFormat("#0.##");
    if (length < 1024) {
        lenStr = formater.format(length) + " Byte";
    } else if (length < 1024 * 1024) {
        lenStr = formater.format(length / 1024.0f) + " KB";
    } else if (length < 1024 * 1024 * 1024) {
        lenStr = formater.format(length / (1024 * 1024)) + " MB";
    } else {
        lenStr = formater.format(length / (1024 * 1024 * 1024)) + " GB";
    }
    return lenStr;
}

From source file:Main.java

public static String formatDecimal(float value) {
    DecimalFormat df = new DecimalFormat("#.##");
    return df.format(value);
}

From source file:Main.java

/**
 * Rounds the given results to two decimal places.
 * //from w w w.ja  v a 2  s  . c  om
 * @param results
 */
private static void roundResults(double[] results) {
    for (int i = 0; i < results.length; i++) {
        double result = results[i];
        DecimalFormat twoDForm = new DecimalFormat("#.##");
        results[i] = Double.valueOf(twoDForm.format(result));
    }
}

From source file:Main.java

public static String changeMoney(String pattern, String value) {
    double va = 0;
    try {//from ww  w.  j a v  a 2 s  . c  o m
        va = Double.parseDouble(value);
    } catch (Exception e) {
        return "";
    }
    DecimalFormat myFormatter = new DecimalFormat(pattern);
    myFormatter.applyPattern(pattern);
    return myFormatter.format(va);
}