Number (Java Platform SE 6) (original) (raw)
java.lang
Class Number
java.lang.Object
java.lang.Number
All Implemented Interfaces:
Direct Known Subclasses:
AtomicInteger, AtomicLong, BigDecimal, BigInteger, Byte, Double, Float, Integer, Long, Short
public abstract class Number
extends Object
implements Serializable
The abstract class Number is the superclass of classesBigDecimal, BigInteger,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, andshort.
Since:
JDK1.0
See Also:
Byte, Double, Float, Integer, Long, Short, Serialized Form
| Constructor Summary |
|---|
| Number() |
| Method Summary | |
|---|---|
| byte | byteValue() Returns the value of the specified number as a byte. |
| abstract double | doubleValue() Returns the value of the specified number as a double. |
| abstract float | floatValue() Returns the value of the specified number as a float. |
| abstract int | intValue() Returns the value of the specified number as an int. |
| abstract 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](../../java/lang/Object.html#wait%28long, int%29) |
| Constructor Detail |
|---|
Number
public Number()
| Method Detail |
|---|
intValue
public abstract int intValue()
Returns the value of the specified number as an int. This may involve rounding or truncation.
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 or truncation.
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.
Since:
JDK1.1
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.
Since:
JDK1.1
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For further API reference and developer documentation, see Java SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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