Example usage for java.math BigDecimal valueOf

Introduction

In this page you can find the example usage for java.math BigDecimal valueOf.

Prototype

public static BigDecimal valueOf(double val)

Source Link

Document

Translates a double into a BigDecimal , using the double 's canonical string representation provided by the Double#toString(double) method.

Usage

From source file:Main.java

public static Double round(Double d) {
    if (d == null) {
        return null;
    }// w ww. j  a  v a2  s.  c  o m
    return BigDecimal.valueOf(d).setScale(1, BigDecimal.ROUND_HALF_UP).doubleValue();
}

From source file:Main.java

/**
 * // w  w  w.j a va  2 s. c  om
 * @param value
 * @return
 */
public static String expToDecimal(String value) {
    return BigDecimal.valueOf(Double.valueOf(value)).toPlainString();
}

From source file:Main.java

public static float getDecreasePay(int amount, double monthRate, int totalMonth) {
    double v = amount / totalMonth * monthRate;
    return BigDecimal.valueOf(v).setScale(2, RoundingMode.HALF_UP).floatValue();
}

From source file:Main.java

public static String safeDoubleToCurrency(Double val) {
    BigDecimal value = BigDecimal.valueOf(val);
    DecimalFormat kursIndonesia = (DecimalFormat) DecimalFormat.getCurrencyInstance();
    DecimalFormatSymbols formatRp = new DecimalFormatSymbols();

    formatRp.setCurrencySymbol("");
    formatRp.setMonetaryDecimalSeparator('.');
    formatRp.setGroupingSeparator(',');

    kursIndonesia.setDecimalFormatSymbols(formatRp);
    kursIndonesia.setParseBigDecimal(true);
    if (val < 1)
        kursIndonesia.setMaximumFractionDigits(8);
    else if (val < 10)
        kursIndonesia.setMaximumFractionDigits(6);
    else if (val < 100)
        kursIndonesia.setMaximumFractionDigits(4);

    return kursIndonesia.format(value);
}

From source file:Main.java

public static int getFirstMonthPay(int amount, double monthRate, int totalMonth) {
    double firstMonthPay = (amount / totalMonth) + amount * monthRate;
    return BigDecimal.valueOf(firstMonthPay).setScale(2, RoundingMode.HALF_UP).intValue();
}

From source file:Main.java

public static String long2str(long amount) {
    return BigDecimal.valueOf(amount).divide(BigDecimal.valueOf(100L)).toString();
}

From source file:Main.java

public static BigDecimal formatToYuan(String money) throws NumberFormatException {
    if (money.equals("")) {
        return new BigDecimal(0);
    }/* www.  j  a v  a  2s . com*/
    long m = Long.parseLong(money);
    return BigDecimal.valueOf(m);
}

From source file:Main.java

/**
 * /*  w w w  . ja  v  a 2s . com*/
 * @param value
 * @return
 */
public static String expToDecimal(double value) {
    return BigDecimal.valueOf(value).toPlainString();
}

From source file:Main.java

public static Double round(Double d, int scale) {
    if (d == null) {
        return null;
    }//from  ww w  .j a  v  a2  s . com
    return BigDecimal.valueOf(d).setScale(scale, BigDecimal.ROUND_HALF_UP).doubleValue();
}

From source file:Main.java

/**
 * H = -[0.5 * lg(0.5) + 0.4*lg(0.4) + 0.1*lg(0.1)]
 *///from w  w w . j av  a2 s  . co m
public static BigDecimal calculateEntropy(double... probabilities) {
    BigDecimal res = BigDecimal.ZERO;

    for (double singleProbability : probabilities) {

        BigDecimal singleEntropy = BigDecimal.valueOf(singleProbability)
                .multiply(BigDecimal.valueOf(lg2(singleProbability)));

        res = res.add(singleEntropy);
    }

    return res.negate().setScale(ENTROPY_SCALE, BigDecimal.ROUND_HALF_UP);
}