org.apache.commons.lang.mutable
Class MutableLong

java.lang.Object
  extended byjava.lang.Number
      extended byorg.apache.commons.lang.mutable.MutableLong
All Implemented Interfaces:
java.lang.Comparable, Mutable, java.io.Serializable

public class MutableLong
extends java.lang.Number
implements java.lang.Comparable, Mutable

A mutable long wrapper.

Since:
2.1
Version:
$Id: MutableLong.java 618693 2008-02-05 16:33:29Z sebb $
See Also:
Long, Serialized Form

Constructor Summary
MutableLong()
          Constructs a new MutableLong with the default value of zero.
MutableLong(long value)
          Constructs a new MutableLong with the specified value.
MutableLong(java.lang.Number value)
          Constructs a new MutableLong with the specified value.
 
Method Summary
 void add(long operand)
          Adds a value.
 void add(java.lang.Number operand)
          Adds a value.
 int compareTo(java.lang.Object obj)
          Compares this mutable to another in ascending order.
 void decrement()
          Decrements the value.
 double doubleValue()
          Returns the value of this MutableLong as a double.
 boolean equals(java.lang.Object obj)
          Compares this object against the specified object.
 float floatValue()
          Returns the value of this MutableLong as a float.
 java.lang.Object getValue()
          Gets the value as a Long instance.
 int hashCode()
          Returns a suitable hashcode for this mutable.
 void increment()
          Increments the value.
 int intValue()
          Returns the value of this MutableLong as a int.
 long longValue()
          Returns the value of this MutableLong as a long.
 void setValue(long value)
          Sets the value.
 void setValue(java.lang.Object value)
          Sets the value from any Number instance.
 void subtract(long operand)
          Subtracts a value.
 void subtract(java.lang.Number operand)
          Subtracts a value.
 java.lang.Long toLong()
          Gets this mutable as an instance of Long.
 java.lang.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
 

Constructor Detail

MutableLong

public MutableLong()
Constructs a new MutableLong with the default value of zero.


MutableLong

public MutableLong(long value)
Constructs a new MutableLong with the specified value.

Parameters:
value - a value.

MutableLong

public MutableLong(java.lang.Number value)
Constructs a new MutableLong with the specified value.

Parameters:
value - a value.
Throws:
java.lang.NullPointerException - if the object is null
Method Detail

getValue

public java.lang.Object getValue()
Gets the value as a Long instance.

Specified by:
getValue in interface Mutable
Returns:
the value as a Long

setValue

public void setValue(long value)
Sets the value.

Parameters:
value - the value to set

setValue

public void setValue(java.lang.Object value)
Sets the value from any Number instance.

Specified by:
setValue in interface Mutable
Parameters:
value - the value to set
Throws:
java.lang.NullPointerException - if the object is null
java.lang.ClassCastException - if the type is not a Number

increment

public void increment()
Increments the value.

Since:
Commons Lang 2.2

decrement

public void decrement()
Decrements the value.

Since:
Commons Lang 2.2

add

public void add(long operand)
Adds a value.

Parameters:
operand - the value to add
Since:
Commons Lang 2.2

add

public void add(java.lang.Number operand)
Adds a value.

Parameters:
operand - the value to add
Throws:
java.lang.NullPointerException - if the object is null
Since:
Commons Lang 2.2

subtract

public void subtract(long operand)
Subtracts a value.

Parameters:
operand - the value to add
Since:
Commons Lang 2.2

subtract

public void subtract(java.lang.Number operand)
Subtracts a value.

Parameters:
operand - the value to add
Throws:
java.lang.NullPointerException - if the object is null
Since:
Commons Lang 2.2

intValue

public int intValue()
Returns the value of this MutableLong as a int.

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

longValue

public long longValue()
Returns the value of this MutableLong as a long.

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

floatValue

public float floatValue()
Returns the value of this MutableLong as a float.

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

doubleValue

public double doubleValue()
Returns the value of this MutableLong as a double.

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

toLong

public java.lang.Long toLong()
Gets this mutable as an instance of Long.

Returns:
a Long instance containing the value from this mutable

equals

public boolean equals(java.lang.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 MutableLong object that contains the same long value as this object.

Parameters:
obj - the object to compare with.
Returns:
true if the objects are the same; false otherwise.

hashCode

public int hashCode()
Returns a suitable hashcode for this mutable.

Returns:
a suitable hashcode

compareTo

public int compareTo(java.lang.Object obj)
Compares this mutable to another in ascending order.

Specified by:
compareTo in interface java.lang.Comparable
Parameters:
obj - the mutable to compare to
Returns:
negative if this is less, zero if equal, positive if greater
Throws:
java.lang.ClassCastException - if the argument is not a MutableLong

toString

public java.lang.String toString()
Returns the String value of this mutable.

Returns:
the mutable value as a string


Copyright 2001-2008 The Apache Software Foundation. All Rights Reserved.