Class java.lang.Number
java.lang.Object
|
+----java.lang.Number
- Subclasses:
- BigDecimal, BigInteger, Byte, Double, Float, Integer, Long, Short
- public abstract class Number
- extends Object
- implements Serializable
The abstract class Number
is the superclass of
classes Byte
, Double
, Float
,
Integer
, Long
, and Short
.
Subclasses of Number
must provide methods to convert
the represented numeric value to byte
, double
,
float
, int
, long
, and
short
.
- Since:
- JDK1.0
- See Also:
- Byte, Double, Float, Integer, Long, Short
Method Summary
|
byte
|
byteValue()
Returns the value of the specified number as a byte .
|
double
|
doubleValue()
Returns the value of the specified number as a double .
|
float
|
floatValue()
Returns the value of the specified number as a float .
|
int
|
intValue()
Returns the value of the specified number as an int .
|
long
|
longValue()
Returns the value of the specified number as a long .
|
short
|
shortValue()
Returns the value of the specified number as a short .
|
Methods inherited from class java.lang.Object
|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Number
public Number()
intValue
public abstract int intValue()
- Returns the value of the specified number as an
int
.
This may involve rounding.
- Returns:
- the numeric value represented by this object after conversion
to type
int
.
longValue
public abstract long longValue()
- Returns the value of the specified number as a
long
.
This may involve rounding.
- Returns:
- the numeric value represented by this object after conversion
to type
long
.
floatValue
public abstract float floatValue()
- Returns the value of the specified number as a
float
.
This may involve rounding.
- Returns:
- the numeric value represented by this object after conversion
to type
float
.
doubleValue
public abstract double doubleValue()
- Returns the value of the specified number as a
double
.
This may involve rounding.
- Returns:
- the numeric value represented by this object after conversion
to type
double
.
byteValue
public byte byteValue()
- Returns the value of the specified number as a
byte
.
This may involve rounding or truncation.
- Returns:
- the numeric value represented by this object after conversion
to type
byte
.
shortValue
public short shortValue()
- Returns the value of the specified number as a
short
.
This may involve rounding or truncation.
- Returns:
- the numeric value represented by this object after conversion
to type
short
.
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