java.lang.Number (JDK 1.0)

This is an abstract class that is the superclass of Byte, Short, Integer, Long, Float, and Double. It defines the conversion functions that those types all implement.

public abstract class Number extends Object implements Serializable {
 // Default Constructor: public Number() // Public Instance Methods 1.1public byte byteValue();
public abstract double doubleValue();
public abstract float floatValue();
public abstract int intValue();
public abstract long longValue(); 1.1public short shortValue();
}

Extended By:

BigDecimal, BigInteger, Byte, Double, Float, Integer, Long, Short

Returned By:

ChoiceFormat.parse(), DecimalFormat.parse(), NumberFormat.parse()