MutableDouble (Apache Commons Lang 3.19.0 API)

java.lang.Object
- java.lang.Number
- - org.apache.commons.lang3.mutable.MutableDouble

All Implemented Interfaces:

Serializable, Comparable<MutableDouble>, Supplier<Number>, Mutable<Number>
```
public class MutableDouble
extends Number
implements Comparable<MutableDouble>, Mutable<Number>
```
A mutable double wrapper.
This class was created before the introduction of the the java.util.concurrent.atomic package and the DoubleAccumulator class.

Note that as MutableDouble does not extend Double, it is not treated by String.format as a Double parameter.

Since:

2.1

See Also:

Double, DoubleAccumulator, DoubleAdder, Serialized Form

Constructor Summary

Constructors
Constructor and Description
`MutableDouble()` Constructs a new MutableDouble with the default value of zero.
`MutableDouble(double value)` Constructs a new MutableDouble with the specified value.
`MutableDouble(Number value)` Constructs a new MutableDouble with the specified value.
`MutableDouble(String value)` Constructs a new MutableDouble parsing the given string.

Method Summary

All Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`void`	`add(double operand)` Adds a value to the value of this instance.
`void`	`add(Number operand)` Adds a value to the value of this instance.
`double`	`addAndGet(double operand)` Increments this instance's value by `operand`; this method returns the value associated with the instance immediately after the addition operation.
`double`	`addAndGet(Number operand)` Increments this instance's value by `operand`; this method returns the value associated with the instance immediately after the addition operation.
`int`	`compareTo(MutableDouble other)` Compares this mutable to another in ascending order.
`void`	`decrement()` Decrements the value.
`double`	`decrementAndGet()` Decrements this instance's value by 1; this method returns the value associated with the instance immediately after the decrement operation.
`double`	`doubleValue()` Returns the value of this MutableDouble as a double.
`boolean`	`equals(Object obj)` Compares this object against the specified object.
`float`	`floatValue()` Returns the value of this MutableDouble as a float.
`double`	`getAndAdd(double operand)` Increments this instance's value by `operand`; this method returns the value associated with the instance immediately prior to the addition operation.
`double`	`getAndAdd(Number operand)` Increments this instance's value by `operand`; this method returns the value associated with the instance immediately prior to the addition operation.
`double`	`getAndDecrement()` Decrements this instance's value by 1; this method returns the value associated with the instance immediately prior to the decrement operation.
`double`	`getAndIncrement()` Increments this instance's value by 1; this method returns the value associated with the instance immediately prior to the increment operation.
`Double`	`getValue()` Deprecated. Use `Mutable.get()`.
`int`	`hashCode()` Returns a suitable hash code for this mutable.
`void`	`increment()` Increments the value.
`double`	`incrementAndGet()` Increments this instance's value by 1; this method returns the value associated with the instance immediately after the increment operation.
`int`	`intValue()` Returns the value of this MutableDouble as an int.
`boolean`	`isInfinite()` Checks whether the double value is infinite.
`boolean`	`isNaN()` Checks whether the double value is the special NaN value.
`long`	`longValue()` Returns the value of this MutableDouble as a long.
`void`	`setValue(double value)` Sets the value.
`void`	`setValue(Number value)` Sets the value from any Number instance.
`void`	`subtract(double operand)` Subtracts a value from the value of this instance.
`void`	`subtract(Number operand)` Subtracts a value from the value of this instance.
`Double`	`toDouble()` Gets this mutable as an instance of Double.
`String`	`toString()` Returns the String value of this mutable.

Methods inherited from class java.lang.Number
byteValue, shortValue

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.commons.lang3.mutable.Mutable
get

- Constructor Detail
  - MutableDouble
```
public MutableDouble()
```
    Constructs a new MutableDouble with the default value of zero.
  - MutableDouble
```
public MutableDouble(double value)
```
    Constructs a new MutableDouble with the specified value.
    
    Parameters:
    
    value - the initial value to store.
  - MutableDouble
```
public MutableDouble(Number value)
```
    Constructs a new MutableDouble with the specified value.
    
    Parameters:
    
    value - the initial value to store, not null.
    
    Throws:
    
    NullPointerException - if the object is null.
  - MutableDouble
```
public MutableDouble(String value)
```
    Constructs a new MutableDouble parsing the given string.
    
    Parameters:
    
    value - the string to parse, not null.
    
    Throws:
    
    NumberFormatException - if the string cannot be parsed into a double, see Double.parseDouble(String).
    
    Since:
    
    2.5
- Method Detail
  - add
```
public void add(double operand)
```
    Adds a value to the value of this instance.
    
    Parameters:
    
    operand - the value to add.
    
    Since:
    
    2.2
  - add
```
public void add(Number operand)
```
    Adds a value to the value of this instance.
    
    Parameters:
    
    operand - the value to add, not null.
    
    Throws:
    
    NullPointerException - if the object is null.
    
    Since:
    
    2.2
  - addAndGet
```
public double addAndGet(double operand)
```
    Increments this instance's value by operand; this method returns the value associated with the instance immediately after the addition operation. This method is not thread safe.
    
    Parameters:
    
    operand - the quantity to add, not null.
    
    Returns:
    
    the value associated with this instance after adding the operand.
    
    Since:
    
    3.5
  - addAndGet
```
public double addAndGet(Number operand)
```
    Increments this instance's value by operand; this method returns the value associated with the instance immediately after the addition operation. This method is not thread safe.
    
    Parameters:
    
    operand - the quantity to add, not null.
    
    Returns:
    
    the value associated with this instance after adding the operand.
    
    Throws:
    
    NullPointerException - if operand is null.
    
    Since:
    
    3.5
  - compareTo
```
public int compareTo(MutableDouble other)
```
    Compares this mutable to another in ascending order.
    
    Specified by:
    
    compareTo in interface Comparable<MutableDouble>
    
    Parameters:
    
    other - the other mutable to compare to, not null.
    
    Returns:
    
    negative if this is less, zero if equal, positive if greater.
  - decrement
```
public void decrement()
```
    Decrements the value.
    
    Since:
    
    2.2
  - decrementAndGet
```
public double decrementAndGet()
```
    Decrements this instance's value by 1; this method returns the value associated with the instance immediately after the decrement operation. This method is not thread safe.
    
    Returns:
    
    the value associated with the instance after it is decremented.
    
    Since:
    
    3.5
  - doubleValue
```
public double doubleValue()
```
    Returns the value of this MutableDouble as a double.
    
    Specified by:
    
    doubleValue in class Number
    
    Returns:
    
    the numeric value represented by this object after conversion to type double.
  - equals
```
public boolean equals(Object obj)
```
    Compares this object against the specified object. The result is true if and only if the argument is not null and is a Double object that represents a double that has the identical bit pattern to the bit pattern of the double represented by this object. For this purpose, two double values are considered to be the same if and only if the method Double.doubleToLongBits(double)returns the same long value when applied to each.
    Note that in most cases, for two instances of class Double,d1 and d2, the value of d1.equals(d2) is true if and only if:
```
 d1.doubleValue() == d2.doubleValue()
 
```
    also has the value true. However, there are two exceptions:
    - If d1 and d2 both represent Double.NaN, then the equals method returns true, even though Double.NaN == Double.NaN has the value false.
    - If d1 represents +0.0 while d2 represents -0.0, or vice versa, the equal test has the value false, even though +0.0 == -0.0 has the value true. This allows hashtables to operate properly.
    Overrides:
    
    equals in class Object
    
    Parameters:
    
    obj - the object to compare with, null returns false.
    
    Returns:
    
    true if the objects are the same; false otherwise.
  - floatValue
```
public float floatValue()
```
    Returns the value of this MutableDouble as a float.
    
    Specified by:
    
    floatValue in class Number
    
    Returns:
    
    the numeric value represented by this object after conversion to type float.
  - getAndAdd
```
public double getAndAdd(double operand)
```
    Increments this instance's value by operand; this method returns the value associated with the instance immediately prior to the addition operation. This method is not thread safe.
    
    Parameters:
    
    operand - the quantity to add, not null.
    
    Returns:
    
    the value associated with this instance immediately before the operand was added.
    
    Since:
    
    3.5
  - getAndAdd
```
public double getAndAdd(Number operand)
```
    Increments this instance's value by operand; this method returns the value associated with the instance immediately prior to the addition operation. This method is not thread safe.
    
    Parameters:
    
    operand - the quantity to add, not null.
    
    Returns:
    
    the value associated with this instance immediately before the operand was added.
    
    Throws:
    
    NullPointerException - if operand is null.
    
    Since:
    
    3.5
  - getAndDecrement
```
public double getAndDecrement()
```
    Decrements this instance's value by 1; this method returns the value associated with the instance immediately prior to the decrement operation. This method is not thread safe.
    
    Returns:
    
    the value associated with the instance before it was decremented.
    
    Since:
    
    3.5
  - getAndIncrement
```
public double getAndIncrement()
```
    Increments this instance's value by 1; this method returns the value associated with the instance immediately prior to the increment operation. This method is not thread safe.
    
    Returns:
    
    the value associated with the instance before it was incremented.
    
    Since:
    
    3.5
  - getValue
```
@Deprecated
public Double getValue()
```
    Deprecated. Use Mutable.get().
    
    Gets the value as a Double instance.
    
    Specified by:
    
    getValue in interface Mutable<Number>
    
    Returns:
    
    the value as a Double, never null.
  - hashCode
```
public int hashCode()
```
    Returns a suitable hash code for this mutable.
    
    Overrides:
    
    hashCode in class Object
    
    Returns:
    
    a suitable hash code.
  - increment
```
public void increment()
```
    Increments the value.
    
    Since:
    
    2.2
  - incrementAndGet
```
public double incrementAndGet()
```
    Increments this instance's value by 1; this method returns the value associated with the instance immediately after the increment operation. This method is not thread safe.
    
    Returns:
    
    the value associated with the instance after it is incremented.
    
    Since:
    
    3.5
  - intValue
```
public int intValue()
```
    Returns the value of this MutableDouble as an int.
    
    Specified by:
    
    intValue in class Number
    
    Returns:
    
    the numeric value represented by this object after conversion to type int.
  - isInfinite
```
public boolean isInfinite()
```
    Checks whether the double value is infinite.
    
    Returns:
    
    true if infinite.
  - isNaN
```
public boolean isNaN()
```
    Checks whether the double value is the special NaN value.
    
    Returns:
    
    true if NaN.
  - longValue
```
public long longValue()
```
    Returns the value of this MutableDouble as a long.
    
    Specified by:
    
    longValue in class Number
    
    Returns:
    
    the numeric value represented by this object after conversion to type long.
  - setValue
```
public void setValue(double value)
```
    Sets the value.
    
    Parameters:
    
    value - the value to set.
  - setValue
```
public void setValue(Number value)
```
    Sets the value from any Number instance.
    
    Specified by:
    
    setValue in interface Mutable<Number>
    
    Parameters:
    
    value - the value to set, not null.
    
    Throws:
    
    NullPointerException - if the object is null.
  - subtract
```
public void subtract(double operand)
```
    Subtracts a value from the value of this instance.
    
    Parameters:
    
    operand - the value to subtract, not null.
    
    Since:
    
    2.2
  - subtract
```
public void subtract(Number operand)
```
    Subtracts a value from the value of this instance.
    
    Parameters:
    
    operand - the value to subtract, not null.
    
    Throws:
    
    NullPointerException - if the object is null.
    
    Since:
    
    2.2
  - toDouble
```
public Double toDouble()
```
    Gets this mutable as an instance of Double.
    
    Returns:
    
    a Double instance containing the value from this mutable, never null.
  - toString
```
public String toString()
```
    Returns the String value of this mutable.
    
    Overrides:
    
    toString in class Object
    
    Returns:
    
    the mutable value as a string.

Class MutableDouble

Constructor Summary

Method Summary

Methods inherited from class java.lang.Number

Methods inherited from class java.lang.Object

Methods inherited from interface org.apache.commons.lang3.mutable.Mutable

Constructor Detail

MutableDouble

MutableDouble

MutableDouble

MutableDouble

Method Detail

add

add

addAndGet

addAndGet

compareTo

decrement

decrementAndGet

doubleValue

equals

floatValue

getAndAdd

getAndAdd

getAndDecrement

getAndIncrement

getValue

hashCode

increment

incrementAndGet

intValue

isInfinite

isNaN

longValue

setValue

setValue

subtract

subtract

toDouble

toString