Top Description Fields Constructors Methods
org.apache.commons.lang3.mutable

public Class MutableLong

extends Number
implements Comparable<MutableLong>, Mutable<Number>
Class Inheritance
All Implemented Interfaces
org.apache.commons.lang3.mutable.Mutable, java.util.function.Supplier, java.lang.Comparable
Imports
java.util.concurrent.atomic.AtomicLong

A mutable long wrapper.

This class was created before the introduction of the the java.util.concurrent.atomic package and the AtomicLong class.

Note that as MutableLong does not extend Long, it is not treated by String#format(String, Object...) as a Long parameter.

Since
2.1
See Also
Long, AtomicLong

Field Summary

Modifier and TypeField and Description
private static final long
serialVersionUID

Hides java.lang.Number.serialVersionUID.

Required for serialization support.
private long
value

The mutable value.

Constructor Summary

AccessConstructor and Description
public
MutableLong()

Constructs a new MutableLong with the default value of zero.

public
MutableLong(final long
the initial value to store.
value
)

Constructs a new MutableLong with the specified value.

public
MutableLong(final Number
the initial value to store, not null.
value
)

Constructs a new MutableLong with the specified value.

public
MutableLong(final String
the string to parse, not null.
value
)

Constructs a new MutableLong parsing the given string.

Method Summary

Modifier and TypeMethod and Description
public void
add(final long
the value to add, not null.
operand
)

Adds a value to the value of this instance.

public void
add(final Number
the value to add, not null.
operand
)

Adds a value to the value of this instance.

public long

Returns:

the value associated with this instance after adding the operand.
addAndGet
(final long
the quantity to add, not null.
operand
)

Increments this instance's value by operand; this method returns the value associated with the instance immediately after the addition operation.

public long

Returns:

the value associated with this instance after adding the operand.
addAndGet
(final Number
the quantity to add, not null.
operand
)

Increments this instance's value by operand; this method returns the value associated with the instance immediately after the addition operation.

public int

Returns:

negative if this is less, zero if equal, positive if greater.
compareTo
(final MutableLong
the other mutable to compare to, not null.
other
)

Implements java.lang.Comparable.compareTo.

Compares this mutable to another in ascending order.

public void
decrement()

Decrements the value.

public long

Returns:

the value associated with the instance after it is decremented.
decrementAndGet
()

Decrements this instance's value by 1; this method returns the value associated with the instance immediately after the decrement operation.

public double

Returns:

the numeric value represented by this object after conversion to type double.
doubleValue
()

Implements abstract java.lang.Number.doubleValue.

Returns the value of this MutableLong as a double.

public boolean

Returns:

true if the objects are the same; false otherwise.
equals
(final Object
the object to compare with, null returns false.
obj
)

Overrides java.lang.Object.equals.

Compares this object to the specified object.

public float

Returns:

the numeric value represented by this object after conversion to type float.
floatValue
()

Implements abstract java.lang.Number.floatValue.

Returns the value of this MutableLong as a float.

public long

Returns:

the value associated with this instance immediately before the operand was added.
getAndAdd
(final long
the quantity to add, not null.
operand
)

Increments this instance's value by operand; this method returns the value associated with the instance immediately prior to the addition operation.

public long

Returns:

the value associated with this instance immediately before the operand was added.
getAndAdd
(final Number
the quantity to add, not null.
operand
)

Increments this instance's value by operand; this method returns the value associated with the instance immediately prior to the addition operation.

public long

Returns:

the value associated with the instance before it was decremented.
getAndDecrement
()

Decrements this instance's value by 1; this method returns the value associated with the instance immediately prior to the decrement operation.

public long

Returns:

the value associated with the instance before it was incremented.
getAndIncrement
()

Increments this instance's value by 1; this method returns the value associated with the instance immediately prior to the increment operation.

public Long

Returns:

the value as a Long, never null.
getValue
()

Implements org.apache.commons.lang3.mutable.Mutable.getValue.

Deprecated Use get().

Gets the value as a Long instance.

public int

Returns:

a suitable hash code.
hashCode
()

Overrides java.lang.Object.hashCode.

Returns a suitable hash code for this mutable.

public void
increment()

Increments the value.

public long

Returns:

the value associated with the instance after it is incremented.
incrementAndGet
()

Increments this instance's value by 1; this method returns the value associated with the instance immediately after the increment operation.

public int

Returns:

the numeric value represented by this object after conversion to type int.
intValue
()

Implements abstract java.lang.Number.intValue.

Returns the value of this MutableLong as an int.

public long

Returns:

the numeric value represented by this object after conversion to type long.
longValue
()

Implements abstract java.lang.Number.longValue.

Returns the value of this MutableLong as a long.

public void
setValue(final long
the value to set.
value
)

Implements org.apache.commons.lang3.mutable.Mutable.setValue.

Sets the value.

public void
setValue(final Number
the value to set, not null.
value
)

Implements org.apache.commons.lang3.mutable.Mutable.setValue.

Sets the value from any Number instance.

public void
subtract(final long
the value to subtract, not null.
operand
)

Subtracts a value from the value of this instance.

public void
subtract(final Number
the value to subtract, not null.
operand
)

Subtracts a value from the value of this instance.

public Long

Returns:

a Long instance containing the value from this mutable, never null.
toLong
()

Gets this mutable as an instance of Long.

public String

Returns:

the mutable value as a string.
toString
()

Overrides java.lang.Object.toString.

Returns the String value of this mutable.

Inherited from java.lang.Number:
byteValueshortValue

Field Detail

serialVersionUIDback to summary
private static final long serialVersionUID

Hides java.lang.Number.serialVersionUID.

Required for serialization support.

See Also
java.io.Serializable
valueback to summary
private long value

The mutable value.

Constructor Detail

MutableLongback to summary
public MutableLong()

Constructs a new MutableLong with the default value of zero.

MutableLongback to summary
public MutableLong(final long value)

Constructs a new MutableLong with the specified value.

Parameters
value:long

the initial value to store.

MutableLongback to summary
public MutableLong(final Number value)

Constructs a new MutableLong with the specified value.

Parameters
value:Number

the initial value to store, not null.

Exceptions
NullPointerException:
if the object is null.
MutableLongback to summary
public MutableLong(final String value)

Constructs a new MutableLong parsing the given string.

Parameters
value:String

the string to parse, not null.

Exceptions
NumberFormatException:
if the string cannot be parsed into a long, see Long#parseLong(String).
Since
2.5

Method Detail

addback to summary
public void add(final long operand)

Adds a value to the value of this instance.

Parameters
operand:long

the value to add, not null.

Since
2.2
addback to summary
public void add(final Number operand)

Adds a value to the value of this instance.

Parameters
operand:Number

the value to add, not null.

Exceptions
NullPointerException:
if the object is null.
Since
2.2
addAndGetback to summary
public long addAndGet(final long 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:long

the quantity to add, not null.

Returns:long

the value associated with this instance after adding the operand.

Since
3.5
addAndGetback to summary
public long addAndGet(final 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:Number

the quantity to add, not null.

Returns:long

the value associated with this instance after adding the operand.

Exceptions
NullPointerException:
if operand is null.
Since
3.5
compareToback to summary
public int compareTo(final MutableLong other)

Implements java.lang.Comparable.compareTo.

Compares this mutable to another in ascending order.

Parameters
other:MutableLong

the other mutable to compare to, not null.

Returns:int

negative if this is less, zero if equal, positive if greater.

Annotations
@Override
decrementback to summary
public void decrement()

Decrements the value.

Since
2.2
decrementAndGetback to summary
public long 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:long

the value associated with the instance after it is decremented.

Since
3.5
doubleValueback to summary
public double doubleValue()

Implements abstract java.lang.Number.doubleValue.

Returns the value of this MutableLong as a double.

Returns:double

the numeric value represented by this object after conversion to type double.

Annotations
@Override
equalsback to summary
public boolean equals(final Object obj)

Overrides java.lang.Object.equals.

Compares this object to the specified object. The result is true if and only if the argument is not null and is a MutableLong object that contains the same long value as this object.

Parameters
obj:Object

the object to compare with, null returns false.

Returns:boolean

true if the objects are the same; false otherwise.

Annotations
@Override
floatValueback to summary
public float floatValue()

Implements abstract java.lang.Number.floatValue.

Returns the value of this MutableLong as a float.

Returns:float

the numeric value represented by this object after conversion to type float.

Annotations
@Override
getAndAddback to summary
public long getAndAdd(final long 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:long

the quantity to add, not null.

Returns:long

the value associated with this instance immediately before the operand was added.

Since
3.5
getAndAddback to summary
public long getAndAdd(final 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:Number

the quantity to add, not null.

Returns:long

the value associated with this instance immediately before the operand was added.

Exceptions
NullPointerException:
if operand is null.
Since
3.5
getAndDecrementback to summary
public long 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:long

the value associated with the instance before it was decremented.

Since
3.5
getAndIncrementback to summary
public long 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:long

the value associated with the instance before it was incremented.

Since
3.5
getValueback to summary
public Long getValue()

Implements org.apache.commons.lang3.mutable.Mutable.getValue.

Deprecated

Use get().

Gets the value as a Long instance.

Returns:Long

the value as a Long, never null.

Annotations
@Deprecated
@Override
hashCodeback to summary
public int hashCode()

Overrides java.lang.Object.hashCode.

Returns a suitable hash code for this mutable.

Returns:int

a suitable hash code.

Annotations
@Override
incrementback to summary
public void increment()

Increments the value.

Since
2.2
incrementAndGetback to summary
public long 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:long

the value associated with the instance after it is incremented.

Since
3.5
intValueback to summary
public int intValue()

Implements abstract java.lang.Number.intValue.

Returns the value of this MutableLong as an int.

Returns:int

the numeric value represented by this object after conversion to type int.

Annotations
@Override
longValueback to summary
public long longValue()

Implements abstract java.lang.Number.longValue.

Returns the value of this MutableLong as a long.

Returns:long

the numeric value represented by this object after conversion to type long.

Annotations
@Override
setValueback to summary
public void setValue(final long value)

Implements org.apache.commons.lang3.mutable.Mutable.setValue.

Sets the value.

Parameters
value:long

the value to set.

setValueback to summary
public void setValue(final Number value)

Implements org.apache.commons.lang3.mutable.Mutable.setValue.

Sets the value from any Number instance.

Parameters
value:Number

the value to set, not null.

Annotations
@Override
Exceptions
NullPointerException:
if the object is null.
subtractback to summary
public void subtract(final long operand)

Subtracts a value from the value of this instance.

Parameters
operand:long

the value to subtract, not null.

Since
2.2
subtractback to summary
public void subtract(final Number operand)

Subtracts a value from the value of this instance.

Parameters
operand:Number

the value to subtract, not null.

Exceptions
NullPointerException:
if the object is null.
Since
2.2
toLongback to summary
public Long toLong()

Gets this mutable as an instance of Long.

Returns:Long

a Long instance containing the value from this mutable, never null.

toStringback to summary
public String toString()

Overrides java.lang.Object.toString.

Returns the String value of this mutable.

Returns:String

the mutable value as a string.

Annotations
@Override