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FlexDoc/Javadoc 2.0 Demo Java Doc |
Class Number
java.lang.Number
All Implemented Interfaces:
Direct Known Subclasses:
public abstract class Number
The abstract class Number is the superclass of platform
classes representing numeric values that are convertible to the
primitive types byte, double, float,
int, long, and short.
The specific semantics of the conversion from the numeric value of
a particular Number implementation to a given primitive
type is defined by the Number implementation in question.
For platform classes, the conversion is often analogous to a
narrowing primitive conversion or a widening primitive conversion
as defined in The Java Language Specification
for converting between primitive types. Therefore, conversions may
lose information about the overall magnitude of a numeric value, may
lose precision, and may even return a result of a different sign
than the input.
See the documentation of a given Number implementation for
conversion details.
Since:
1.0
Author:
Lee Boynton, Arthur van Hoff
See Also:
Constructor Summary |
Constructor for subclasses to call.
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Method Summary |
byte |
Returns the value of the specified number as a byte.
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abstract double |
Returns the value of the specified number as a double.
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abstract float |
Returns the value of the specified number as a float.
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abstract int |
Returns the value of the specified number as an int.
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abstract long |
Returns the value of the specified number as a long.
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short |
Returns the value of the specified number as a short.
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Methods inherited from class java.lang. Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor for subclasses to call.
public abstract int intValue |
() |
Returns the value of the specified number as an
int.
Returns:
the numeric value represented by this object after conversion
to type int.
public abstract long longValue |
() |
Returns the value of the specified number as a
long.
Returns:
the numeric value represented by this object after conversion
to type long.
public abstract float floatValue |
() |
Returns the value of the specified number as a
float.
Returns:
the numeric value represented by this object after conversion
to type float.
public abstract double doubleValue |
() |
Returns the value of the specified number as a
double.
Returns:
the numeric value represented by this object after conversion
to type double.
Returns the value of the specified number as a
byte.
Implementation Requirements:
The default implementation returns the result of
intValue() cast
to a
byte.
Returns:
the numeric value represented by this object after conversion
to type byte.
Since:
1.1
public short shortValue |
() |
Returns the value of the specified number as a
short.
Implementation Requirements:
The default implementation returns the result of
intValue() cast
to a
short.
Returns:
the numeric value represented by this object after conversion
to type short.
Since:
1.1
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FlexDoc/Javadoc 2.0 Demo Java Doc |
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