org.zkoss.math
Class BigDecimals

java.lang.Object
  org.zkoss.math.BigDecimals

public class BigDecimals
extends Object

Utilities and constants of big decimals.

Author:

tomyeh

Field Summary

static int	FINE_NUMBER_PRECISION Represents our fine number precision.
static int	FINE_NUMBER_SCALE Represents our fine number scale.
static BigDecimal	MINUS_ONE Represents -1 in big decimal.
static int	NUMBER_PRECISION Represents our number precision.
static int	NUMBER_SCALE Represents our number scale.
static BigDecimal	ONE Represents 1 in big decimal.
static BigDecimal	ZERO Represents 0 in big decimal.

Constructor Summary

BigDecimals()

Method Summary

static BigDecimal	toBigDecimal(byte v) Converts a byte to a big decimal with a scale without.
static BigDecimal	toBigDecimal(Byte v) Converts a byte to a big decimal with a scale without.
static BigDecimal	toBigDecimal(double v, int scale) Converts a double to a big decimal with a scale.
static BigDecimal	toBigDecimal(double v, int scale, int roundingMode) Converts a double to a big decimal with a scale.
static BigDecimal	toBigDecimal(int v) Converts an integer to a big decimal with a scale without.
static BigDecimal	toBigDecimal(Integer v) Converts an integer to a big decimal with a scale without.
static BigDecimal	toBigDecimal(int v, int scale) Converts an integer to a big decimal with a scale.
static BigDecimal	toBigDecimal(long v) Converts a long to a big decimal with a scale without.
static BigDecimal	toBigDecimal(Long v) Converts a long to a big decimal with a scale without.
static BigDecimal	toBigDecimal(long v, int scale) Converts an integer to a big decimal with a scale.
static BigDecimal	toBigDecimal(short v) Converts a short to a big decimal with a scale without.
static BigDecimal	toBigDecimal(Short v) Converts a short to a big decimal with a scale without.
static String	toLocaleString(BigDecimal bd, Locale locale) Return a string representation of this BigDecimal without an exponent field, which respects the given locale.
static String	toPlainString(BigDecimal bd) Deprecated. As of release 6.0.0, use BigDecimal.toPlainString() directly (since we don't support JDK 1.4) anymore.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

ZERO

public static final BigDecimal ZERO

Represents 0 in big decimal.

See Also:

ONE, MINUS_ONE

ONE

public static final BigDecimal ONE

Represents 1 in big decimal.

See Also:

ZERO, MINUS_ONE

MINUS_ONE

public static final BigDecimal MINUS_ONE

Represents -1 in big decimal.

See Also:

ZERO, ONE

NUMBER_PRECISION

public static final int NUMBER_PRECISION

Represents our number precision.

See Also:

Constant Field Values

NUMBER_SCALE

public static final int NUMBER_SCALE

Represents our number scale.

See Also:

Constant Field Values

FINE_NUMBER_PRECISION

public static final int FINE_NUMBER_PRECISION

Represents our fine number precision.

See Also:

Constant Field Values

FINE_NUMBER_SCALE

public static final int FINE_NUMBER_SCALE

Represents our fine number scale.

See Also:

Constant Field Values

Constructor Detail

BigDecimals

public BigDecimals()

Method Detail

toBigDecimal

public static final BigDecimal toBigDecimal(double v,
                                            int scale,
                                            int roundingMode)

Converts a double to a big decimal with a scale.

It is strongly deprecated to use new Decimal(double) since the scale is unpredictable and usually surprising. For example, BigDecimal(.1) will becomes .1000000000000000055511151231257827021181583404541015625. On the other hand, BigDecimal("0.1") will be 0.1 correctly.

Parameters:

scale - the BigDecimal's scale

roundingMode - the rounding mode

toBigDecimal

public static final BigDecimal toBigDecimal(double v,
                                            int scale)

Converts a double to a big decimal with a scale. It uses BigDecimal.ROUND_HALF_UP.

toBigDecimal

public static final BigDecimal toBigDecimal(int v,
                                            int scale)

Converts an integer to a big decimal with a scale.

toBigDecimal

public static final BigDecimal toBigDecimal(long v,
                                            int scale)

Converts an integer to a big decimal with a scale.

toBigDecimal

public static final BigDecimal toBigDecimal(int v)

Converts an integer to a big decimal with a scale without. losing precision -- zero scale in this case.

toBigDecimal

public static final BigDecimal toBigDecimal(long v)

Converts a long to a big decimal with a scale without. losing precision -- zero scale in this case.

toBigDecimal

public static final BigDecimal toBigDecimal(short v)

Converts a short to a big decimal with a scale without. losing precision -- zero scale in this case.

toBigDecimal

public static final BigDecimal toBigDecimal(byte v)

Converts a byte to a big decimal with a scale without. losing precision -- zero scale in this case.

toBigDecimal

public static final BigDecimal toBigDecimal(Integer v)

Converts an integer to a big decimal with a scale without. losing precision -- zero scale in this case.

toBigDecimal

public static final BigDecimal toBigDecimal(Long v)

Converts a long to a big decimal with a scale without. losing precision -- zero scale in this case.

toBigDecimal

public static final BigDecimal toBigDecimal(Short v)

Converts a short to a big decimal with a scale without. losing precision -- zero scale in this case.

toBigDecimal

public static final BigDecimal toBigDecimal(Byte v)

Converts a byte to a big decimal with a scale without. losing precision -- zero scale in this case.

toPlainString

public static final String toPlainString(BigDecimal bd)

Deprecated. As of release 6.0.0, use BigDecimal.toPlainString() directly (since we don't support JDK 1.4) anymore.

toLocaleString

public static final String toLocaleString(BigDecimal bd,
                                          Locale locale)

Return a string representation of this BigDecimal without an exponent field, which respects the given locale.

Parameters:

locale - if null, the current user locale is used.

Since:

5.0.10