Added in API level 1

Number

abstract class Number : Serializable
kotlin.Any
   ↳ java.lang.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 defining 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.

Summary

Public constructors

Public methods
open Byte

Returns the value of the specified number as a byte, which may involve rounding or truncation.
abstract Double

Returns the value of the specified number as a double, which may involve rounding.
abstract Float

Returns the value of the specified number as a float, which may involve rounding.
abstract Int

Returns the value of the specified number as an int, which may involve rounding or truncation.
abstract Long

Returns the value of the specified number as a long, which may involve rounding or truncation.
open Short

Returns the value of the specified number as a short, which may involve rounding or truncation.

Public constructors

Number

Added in API level 1
Number()

Public methods

byteValue

Added in API level 1
open fun byteValue(): Byte

Returns the value of the specified number as a byte, which may involve rounding or truncation.

This implementation returns the result of intValue cast to a byte.

Return
Byte the numeric value represented by this object after conversion to type byte.

doubleValue

Added in API level 1
abstract fun doubleValue(): Double

Returns the value of the specified number as a double, which may involve rounding.

Return
Double the numeric value represented by this object after conversion to type double.

floatValue

Added in API level 1
abstract fun floatValue(): Float

Returns the value of the specified number as a float, which may involve rounding.

Return
Float the numeric value represented by this object after conversion to type float.

intValue

Added in API level 1
abstract fun intValue(): Int

Returns the value of the specified number as an int, which may involve rounding or truncation.

Return
Int the numeric value represented by this object after conversion to type int.

longValue

Added in API level 1
abstract fun longValue(): Long

Returns the value of the specified number as a long, which may involve rounding or truncation.

Return
Long the numeric value represented by this object after conversion to type long.

shortValue

Added in API level 1
open fun shortValue(): Short

Returns the value of the specified number as a short, which may involve rounding or truncation.

This implementation returns the result of intValue cast to a short.

Return
Short the numeric value represented by this object after conversion to type short.