edu.northwestern.at.utils

Class MutableLong

java.lang.Object

java.lang.Number

edu.northwestern.at.utils.MutableLong

All Implemented Interfaces:

java.io.Serializable

public class MutableLong
extends java.lang.Number
implements java.io.Serializable

Implements a long object wrapper which allows changing the long value.

The built-in Java Long class does not allow changing the value of the wrapped Long value once the Long object is created. MutableLong provides most of the same methods as Long but adds extra methods to allow changing the value of the stored long. This is useful when wrapping longs for storage in collection types since it is much more efficient to update the value of an existing MutableLong than to create a new Long every time the value changes.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected long	mutableLong The long wrapped here.

Constructor Summary

Constructors

Constructor and Description
MutableLong(long l) Create MutableLong object from an int value.
MutableLong(java.lang.String s) Create MutableLong object from a string.

Method Summary

Methods

Modifier and Type	Method and Description
byte	byteValue()
int	compareTo(java.lang.Number number) Compares this number to another number.
int	compareTo(java.lang.Object obj) Compares this object to another object.
protected int	doCompare(long i, long j)
double	doubleValue()
boolean	equals(java.lang.Object obj)
float	floatValue()
int	hashCode()
int	intValue()
long	longValue()
void	setValue(byte aByte)
void	setValue(double d)
void	setValue(float f)
void	setValue(int i)
void	setValue(long l)
void	setValue(short aWord)
short	shortValue()
java.lang.Long	toLong()
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

mutableLong

protected long mutableLong

The long wrapped here.

Constructor Detail

MutableLong

public MutableLong(long l)

Create MutableLong object from an int value.

Parameters:

l - The long being wrapped.

MutableLong

public MutableLong(java.lang.String s)
            throws java.lang.NumberFormatException

Create MutableLong object from a string.

Parameters:

s - String containing an integer value.

Throws:

java.lang.NumberFormatException

Method Detail

compareTo

public int compareTo(java.lang.Object obj)

Compares this object to another object.

Parameters:

obj - The other object.

compareTo

public int compareTo(java.lang.Number number)

Compares this number to another number.

Parameters:

number - The other number.

doCompare

protected int doCompare(long i,
            long j)

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

byteValue

public byte byteValue()

Overrides:

byteValue in class java.lang.Number

shortValue

public short shortValue()

Overrides:

shortValue in class java.lang.Number

intValue

public int intValue()

Specified by:

intValue in class java.lang.Number

longValue

public long longValue()

Specified by:

longValue in class java.lang.Number

floatValue

public float floatValue()

Specified by:

floatValue in class java.lang.Number

doubleValue

public double doubleValue()

Specified by:

doubleValue in class java.lang.Number

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

setValue

public void setValue(byte aByte)

setValue

public void setValue(short aWord)

setValue

public void setValue(int i)

setValue

public void setValue(long l)

setValue

public void setValue(float f)

setValue

public void setValue(double d)

toLong

public java.lang.Long toLong()