java.lang.Object | |
↳ | java.math.MathContext |
Immutable objects describing settings such as rounding mode and digit
precision for the numerical operations provided by class BigDecimal
.
Fields | |||||||||||
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DECIMAL128 | A MathContext which corresponds to the IEEE 754 quadruple
decimal precision format: 34 digit precision and
HALF_EVEN rounding. |
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DECIMAL32 | A MathContext which corresponds to the IEEE 754 single decimal
precision format: 7 digit precision and HALF_EVEN
rounding. |
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DECIMAL64 | A MathContext which corresponds to the IEEE 754 double decimal
precision format: 16 digit precision and HALF_EVEN
rounding. |
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UNLIMITED | A MathContext for unlimited precision with
HALF_UP rounding. |
Public Constructors | |||||||||||
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Constructs a new
MathContext with the specified precision and
with the rounding mode HALF_UP . | |||||||||||
Constructs a new
MathContext with the specified precision and
with the specified rounding mode. | |||||||||||
Constructs a new
MathContext from a string. |
Public Methods | |||||||||||
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Returns true if x is a
MathContext with the same precision
setting and the same rounding mode as this MathContext instance. | |||||||||||
Returns the precision.
| |||||||||||
Returns the rounding mode.
| |||||||||||
Returns the hash code for this
MathContext instance. | |||||||||||
Returns the string representation for this
MathContext instance. |
[Expand]
Inherited Methods | |||||||||||
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From class
java.lang.Object
|
A MathContext
for unlimited precision with
HALF_UP
rounding.
Constructs a new MathContext
with the specified precision and
with the rounding mode HALF_UP
. If the
precision passed is zero, then this implies that the computations have to
be performed exact, the rounding mode in this case is irrelevant.
precision | the precision for the new MathContext . |
---|
IllegalArgumentException | if precision < 0 .
|
---|
Constructs a new MathContext
with the specified precision and
with the specified rounding mode. If the precision passed is zero, then
this implies that the computations have to be performed exact, the
rounding mode in this case is irrelevant.
precision | the precision for the new MathContext . |
---|---|
roundingMode | the rounding mode for the new MathContext . |
IllegalArgumentException | if precision < 0 . |
---|---|
NullPointerException | if roundingMode is null .
|
Constructs a new MathContext
from a string. The string has to
specify the precision and the rounding mode to be used and has to follow
the following syntax: "precision=<precision> roundingMode=<roundingMode>"
This is the same form as the one returned by the toString()
method.
IllegalArgumentException | if the string is not in the correct format or if the precision specified is < 0. |
---|
Returns true if x is a MathContext
with the same precision
setting and the same rounding mode as this MathContext
instance.
x | object to be compared. |
---|
true
if this MathContext
instance is equal to the
x
argument; false
otherwise.
Returns the precision. The precision is the number of digits used for an operation. Results are rounded to this precision. The precision is guaranteed to be non negative. If the precision is zero, then the computations have to be performed exact, results are not rounded in this case.
Returns the hash code for this MathContext
instance.
MathContext
.
Returns the string representation for this MathContext
instance.
The string has the form
"precision=
where
is an integer describing the number
of digits used for operations and
is the
string representation of the rounding mode.
MathContext
instance