org.apache.commons.lang.mutable
Class MutableDouble
Number
org.apache.commons.lang.mutable.MutableDouble
- Comparable, Mutable
public class MutableDouble
extends Number
A mutable double
wrapper.
$Id: MutableDouble.java 161243 2005-04-14 04:30:28Z ggregory $MutableDouble() - Constructs a new MutableDouble with the default value of zero.
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MutableDouble(Number value) - Constructs a new MutableDouble with the specified value.
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MutableDouble(double value) - Constructs a new MutableDouble with the specified value.
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int | compareTo(Object obj) - Compares this mutable to another in ascending order.
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double | doubleValue() - Returns the value of this MutableDouble as a double.
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boolean | equals(Object obj) - Compares this object against the specified object.
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float | floatValue() - Returns the value of this MutableDouble as a float.
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Object | getValue() - Gets the value as a Double instance.
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int | hashCode() - Returns a suitable hashcode for this mutable.
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int | intValue() - Returns the value of this MutableDouble as a int.
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boolean | isInfinite() - Checks whether the double value is infinite.
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boolean | isNaN() - Checks whether the double value is the special NaN value.
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long | longValue() - Returns the value of this MutableDouble as a long.
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void | setValue(Object value) - Sets the value from any Number instance.
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void | setValue(double value) - Sets the value.
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String | toString() - Returns the String value of this mutable.
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MutableDouble
public MutableDouble()
Constructs a new MutableDouble with the default value of zero.
MutableDouble
public MutableDouble(Number value)
Constructs a new MutableDouble with the specified value.
MutableDouble
public MutableDouble(double value)
Constructs a new MutableDouble with the specified value.
compareTo
public int compareTo(Object obj)
Compares this mutable to another in ascending order.
obj
- the mutable to compare to
- negative if this is less, zero if equal, positive if greater
doubleValue
public double doubleValue()
Returns the value of this MutableDouble as a double.
- 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.
obj
- the object to compare with.
true
if the objects are the same; false
otherwise.
floatValue
public float floatValue()
Returns the value of this MutableDouble as a float.
- the numeric value represented by this object after conversion to type float.
getValue
public Object getValue()
Gets the value as a Double instance.
- getValue in interface Mutable
hashCode
public int hashCode()
Returns a suitable hashcode for this mutable.
intValue
public int intValue()
Returns the value of this MutableDouble as a int.
- the numeric value represented by this object after conversion to type int.
isInfinite
public boolean isInfinite()
Checks whether the double value is infinite.
isNaN
public boolean isNaN()
Checks whether the double value is the special NaN value.
longValue
public long longValue()
Returns the value of this MutableDouble as a long.
- the numeric value represented by this object after conversion to type long.
setValue
public void setValue(Object value)
Sets the value from any Number instance.
- setValue in interface Mutable
setValue
public void setValue(double value)
Sets the value.
toString
public String toString()
Returns the String value of this mutable.
- the mutable value as a string
Copyright © 2001-2005 - Apache Software Foundation