Most visited

Recently visited

Results for

Summary: Fields | Ctors | Methods | Inherited Methods

MathContext

public final class MathContext
extends Object implements Serializable

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.

Summary

Fields
`public static final MathContext`	`DECIMAL128` A `MathContext` which corresponds to the IEEE 754 quadruple decimal precision format: 34 digit precision and `RoundingMode#HALF_EVEN` rounding.
`public static final MathContext`	`DECIMAL32` A `MathContext` which corresponds to the IEEE 754 single decimal precision format: 7 digit precision and `RoundingMode#HALF_EVEN` rounding.
`public static final MathContext`	`DECIMAL64` A `MathContext` which corresponds to the IEEE 754 double decimal precision format: 16 digit precision and `RoundingMode#HALF_EVEN` rounding.
`public static final MathContext`	`UNLIMITED` A `MathContext` for unlimited precision with `RoundingMode#HALF_UP` rounding.

Public constructors
`MathContext(int precision)` Constructs a new `MathContext` with the specified precision and with the rounding mode `RoundingMode#HALF_UP`.
`MathContext(int precision, RoundingMode roundingMode)` Constructs a new `MathContext` with the specified precision and with the specified rounding mode.
`MathContext(String s)` Constructs a new `MathContext` from a string.

Public methods
`boolean`	`equals(Object x)` Returns true if x is a `MathContext` with the same precision setting and the same rounding mode as this `MathContext` instance.
`int`	`getPrecision()` Returns the precision.
`RoundingMode`	`getRoundingMode()` Returns the rounding mode.
`int`	`hashCode()` Returns the hash code for this `MathContext` instance.
`String`	`toString()` Returns the string representation for this `MathContext` instance.

Inherited methods

From class


        
          java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeout, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long timeout)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

Fields

DECIMAL128

public static final MathContext DECIMAL128

A MathContext which corresponds to the IEEE 754 quadruple decimal precision format: 34 digit precision and RoundingMode#HALF_EVEN rounding.

DECIMAL32

public static final MathContext DECIMAL32

A MathContext which corresponds to the IEEE 754 single decimal precision format: 7 digit precision and RoundingMode#HALF_EVEN rounding.

DECIMAL64

public static final MathContext DECIMAL64

A MathContext which corresponds to the IEEE 754 double decimal precision format: 16 digit precision and RoundingMode#HALF_EVEN rounding.

UNLIMITED

public static final MathContext UNLIMITED

A MathContext for unlimited precision with RoundingMode#HALF_UP rounding.

Public constructors

MathContext

public MathContext (int precision)

Constructs a new MathContext with the specified precision and with the rounding mode RoundingMode#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.

Parameters
`precision`	`int`: the precision for the new `MathContext`.

Throws
`IllegalArgumentException`	if `precision < 0`.

MathContext

public MathContext (int precision, 
                RoundingMode roundingMode)

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.

Parameters
`precision`	`int`: the precision for the new `MathContext`.
`roundingMode`	`RoundingMode`: the rounding mode for the new `MathContext`.

Throws
`IllegalArgumentException`	if `precision < 0`.
`NullPointerException`	if `roundingMode` is `null`.

MathContext

public MathContext (String s)

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.

Parameters
`s`	`String`

Throws
`IllegalArgumentException`	if the string is not in the correct format or if the precision specified is < 0.

Public methods

equals

public boolean equals (Object x)

Returns true if x is a MathContext with the same precision setting and the same rounding mode as this MathContext instance.

Parameters
`x`	`Object`: object to be compared.

Returns
`boolean`	`true` if this `MathContext` instance is equal to the `x` argument; `false` otherwise.

getPrecision

public int getPrecision ()

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
`int`	the precision.

getRoundingMode

public RoundingMode getRoundingMode ()

Returns the rounding mode. The rounding mode is the strategy to be used to round results.

The rounding mode is one of RoundingMode#UP, RoundingMode#DOWN, RoundingMode#CEILING, RoundingMode#FLOOR, RoundingMode#HALF_UP, RoundingMode#HALF_DOWN, RoundingMode#HALF_EVEN, or RoundingMode#UNNECESSARY.

Returns
`RoundingMode`	the rounding mode.

hashCode

public int hashCode ()

Returns the hash code for this MathContext instance.

Returns
`int`	the hash code for this `MathContext`.

toString

public String toString ()

Returns the string representation for this MathContext instance. The string has the form "precision=<precision> roundingMode=<roundingMode>" where <precision> is an integer describing the number of digits used for operations and <roundingMode> is the string representation of the rounding mode.

Returns
`String`	a string representation for this `MathContext` instance

Classes

Enums

Most visited

Recently visited

Results for

MathContext

Summary

Fields

Public constructors

Public methods

Inherited methods

Fields

DECIMAL128

DECIMAL32

DECIMAL64

UNLIMITED

Public constructors

MathContext

MathContext

MathContext

Public methods

equals

getPrecision

getRoundingMode

hashCode

toString