Example usage for java.math BigDecimal setScale

Introduction

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

Prototype

@Deprecated(since = "9")
public BigDecimal setScale(int newScale, int roundingMode)

Source Link

Document

Returns a BigDecimal whose scale is the specified value, and whose unscaled value is determined by multiplying or dividing this BigDecimal 's unscaled value by the appropriate power of ten to maintain its overall value.

Usage

From source file:com.scf.core.EnvTest.java

public static double halfUp(double val, int scale) {
    if (scale < 0) {
        throw new IllegalArgumentException("The scale must be a positive integer or zero");
    }//from www  .  j a v a  2  s  .  co m

    BigDecimal b = new BigDecimal(val);
    //?2??
    double f1 = b.setScale(scale, BigDecimal.ROUND_HALF_UP).doubleValue();
    return f1;
}

From source file:Main.java

/**
 * Formats decimal number for specified locale
 *
 * @param v      Value to format//from  w  ww  . j  a  v a 2  s  .  c  o m
 * @param locale Locale
 * @return Formatted string
 */
public static String formatBigDecimal(BigDecimal v, Locale locale) {
    NumberFormat numberFormat = NumberFormat.getInstance(locale);

    int scale = 2;
    if (v.intValue() >= 100) {
        scale = 1;
    }

    return numberFormat.format(v.setScale(scale, RoundingMode.UP));
}

From source file:nu.mine.kino.projects.utils.Utils.java

public static Double round(Double d, int scale) {
    if (d == null || Double.isNaN(d)) {
        return d;
    }//from w  w  w  .  ja  v a 2  s.  c  o  m
    BigDecimal org = new BigDecimal(d);
    BigDecimal rounded = org.setScale(scale, BigDecimal.ROUND_HALF_UP);
    return rounded.doubleValue();
}

From source file:org.zapto.samhippiemiddlepoolchecker.Values.java

static public String valueToString(float value, int scale) {
    BigDecimal decimal = new BigDecimal(value);
    decimal = decimal.setScale(scale, BigDecimal.ROUND_HALF_UP);
    return decimal.toPlainString();
}

From source file:org.apache.pdfbox.rendering.TilingPaint.java

/**
 * Returns the closest integer which is larger than the given number.
 * Uses BigDecimal to avoid floating point error which would cause gaps in the tiling.
 *///from  w w w  . j  a va2s  .c  o  m
private static int ceiling(double num) {
    BigDecimal decimal = new BigDecimal(num);
    decimal = decimal.setScale(5, RoundingMode.CEILING); // 5 decimal places of accuracy
    return decimal.intValue();
}

From source file:geogebra.util.MyMath.java

/**
 * Round a double to the given number of digits
 * @param x //from  w  w  w.  ja  v  a 2  s .c o m
 * @param digits 
 * @return number rounded to given number of digits
 */
final public static double truncate(double x, int digits) {
    BigDecimal bd = new BigDecimal(x);
    bd = bd.setScale(digits, BigDecimal.ROUND_HALF_UP);
    return bd.doubleValue();
}

From source file:org.eyeseetea.malariacare.utils.Utils.java

public static String round(float base, int decimalPlace) {
    BigDecimal bd = new BigDecimal(Float.toString(base));
    bd = bd.setScale(decimalPlace, BigDecimal.ROUND_HALF_UP);
    if (decimalPlace == 0)
        return Integer.toString((int) bd.floatValue());
    return Float.toString(bd.floatValue());
}

From source file:com.nearinfinity.honeycomb.hbase.bulkload.FieldParser.java

private static ByteBuffer extractDecimal(String val, int precision, int right_scale) {
    int left_scale = precision - 2;
    BigDecimal x = new BigDecimal(val);
    boolean is_negative = x.compareTo(BigDecimal.ZERO) == -1;
    x = x.abs();/*from  w w w .  jav  a  2 s.c om*/
    BigDecimal left = x.setScale(0, RoundingMode.DOWN);
    BigDecimal right = x.subtract(left).movePointRight(right_scale);
    int right_bytes_len = bytesFromDigits(right_scale);
    int left_bytes_len = bytesFromDigits(left_scale);
    byte[] left_bytes = left.toBigInteger().toByteArray();
    byte[] right_bytes = right.toBigInteger().toByteArray();
    // Bit twiddling is fun
    byte[] buff = new byte[left_bytes_len + right_bytes_len];

    System.arraycopy(left_bytes, 0, buff, left_bytes_len - left_bytes.length, left_bytes.length);
    System.arraycopy(right_bytes, 0, buff, right_bytes_len - right_bytes.length + left_bytes_len,
            right_bytes.length);

    buff[0] ^= -128; // Flip first bit, 0x80
    if (is_negative) { // Flip all bits
        for (int i = 0; i < buff.length; i++) {
            buff[i] ^= -1; // 0xff
        }
    }
    return ByteBuffer.wrap(buff);
}

From source file:Main.java

public static BigDecimal setDecimalDigit(BigDecimal number, int digit, boolean setNullIndicator) {
    BigDecimal returnNum = BigDecimal.ZERO;
    if (number != null) {
        if ((number.compareTo(BigDecimal.ZERO) == 0) && setNullIndicator) {
            return null;
        }//from w w  w.  ja v a 2  s  . co m
        returnNum = number.setScale(digit, BigDecimal.ROUND_HALF_UP);
    }
    return returnNum;
}

From source file:com.ms.app.web.commons.tools.CurrencyFormattor.java

/**
 * "###.####"-->"#.00" floatPrice-->formatPrice(?)
 *//* ww w  .j a va2  s  . c  om*/
public static String float2formatPrice(Float price) {
    if (price == null) {
        return null;
    }

    BigDecimal b = new BigDecimal(price);
    float f = b.setScale(SCALE, BigDecimal.ROUND_HALF_UP).floatValue();
    DecimalFormat fnum = new DecimalFormat(CURRENCY);

    return fnum.format(f);
}