- java.lang.Object
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- java.lang.Number
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- All Implemented Interfaces:
- Serializable
- Direct Known Subclasses:
- AtomicInteger, AtomicLong, BigDecimal, BigInteger, Byte, Double, Float, Integer, Long, Short
public abstract class Number extends Object implements Serializable
The abstract classNumberis the superclass of classesBigDecimal,BigInteger,Byte,Double,Float,Integer,Long, andShort.Subclasses of
Numbermust provide methods to convert the represented numeric value tobyte,double,float,int,long, andshort.
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Constructor Summary
Constructors Constructor and Description Number()
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Method Summary
Methods Modifier and Type Method and Description bytebyteValue()Returns the value of the specified number as abyte.abstract doubledoubleValue()Returns the value of the specified number as adouble.abstract floatfloatValue()Returns the value of the specified number as afloat.abstract intintValue()Returns the value of the specified number as anint.abstract longlongValue()Returns the value of the specified number as along.shortshortValue()Returns the value of the specified number as ashort.
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Method Detail
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intValue
public abstract int intValue()
Returns the value of the specified number as anint. This may involve rounding or truncation.- Returns:
- the numeric value represented by this object after conversion
to type
int.
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longValue
public abstract long longValue()
Returns the value of the specified number as along. This may involve rounding or truncation.- Returns:
- the numeric value represented by this object after conversion
to type
long.
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floatValue
public abstract float floatValue()
Returns the value of the specified number as afloat. This may involve rounding.- Returns:
- the numeric value represented by this object after conversion
to type
float.
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doubleValue
public abstract double doubleValue()
Returns the value of the specified number as adouble. This may involve rounding.- Returns:
- the numeric value represented by this object after conversion
to type
double.
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byteValue
public byte byteValue()
Returns the value of the specified number as abyte. This may involve rounding or truncation.- Returns:
- the numeric value represented by this object after conversion
to type
byte. - Since:
- JDK1.1
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shortValue
public short shortValue()
Returns the value of the specified number as ashort. 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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Document created the 11/06/2005, last modified the 04/03/2020
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