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Interfaces
Classes
- Boolean
- Byte
- Character
- Character.Subset
- Character.UnicodeBlock
- Class
- ClassLoader
- Compiler
- Double
- Enum
- Float
- InheritableThreadLocal
- Integer
- Long
- Math
- Number
- Object
- Package
- Process
- ProcessBuilder
- Runtime
- RuntimePermission
- SecurityManager
- Short
- StackTraceElement
- StrictMath
- String
- StringBuffer
- StringBuilder
- System
- Thread
- ThreadGroup
- ThreadLocal
- Throwable
- Void
Enums
- Thread.State
Exceptions
Errors

Summary: Ctors | Methods | Inherited Methods | [Expand All]

Added in API level 1

public abstract class

Number

extends Object
implements Serializable

java.lang.Object
↳	java.lang.Number

Known Direct Subclasses

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

AtomicInteger	An `int` value that may be updated atomically.
AtomicLong	A `long` value that may be updated atomically.
BigDecimal	An immutable arbitrary-precision signed decimal.
BigInteger	An immutable arbitrary-precision signed integer.
Byte	The wrapper for the primitive type `byte` .
Double	The wrapper for the primitive type `double` .
Float	The wrapper for the primitive type `float` .
Integer	The wrapper for the primitive type `int` .
Long	The wrapper for the primitive type `long` .
Short	The wrapper for the primitive type `short` .

Class Overview

The abstract superclass of the classes which represent numeric base types (that is Byte , Short , Integer , Long , Float , and Double .

Summary

Public Constructors
	Number () Empty default constructor.

Public Methods
byte	byteValue () Returns this object's value as a byte.
abstract double	doubleValue () Returns this object's value as a double.
abstract float	floatValue () Returns this object's value as a float.
abstract int	intValue () Returns this object's value as an int.
abstract long	longValue () Returns this object's value as a long.
short	shortValue () Returns this object's value as a short.

[Expand]

Inherited Methods

From class java.lang.Object

Object	clone () Creates and returns a copy of this `Object` .
boolean	equals ( Object o) Compares this instance with the specified object and indicates if they are equal.
void	finalize () Invoked when the garbage collector has detected that this instance is no longer reachable.
final Class <?>	getClass () Returns the unique instance of `Class` that represents this object's class.
int	hashCode () Returns an integer hash code for this object.
final void	notify () Causes a thread which is waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
final void	notifyAll () Causes all threads which are waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
String	toString () Returns a string containing a concise, human-readable description of this object.
final void	wait () Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object.
final void	wait (long millis, int nanos) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.
final void	wait (long millis) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.

Public Constructors

public Number ()

Added in API level 1

Empty default constructor.

Public Methods

public byte byteValue ()

Added in API level 1

Returns this object's value as a byte. Might involve rounding and/or truncating the value, so it fits into a byte.

Returns

the primitive byte value of this object.

public abstract double doubleValue ()

Added in API level 1

Returns this object's value as a double. Might involve rounding.

Returns

the primitive double value of this object.

public abstract float floatValue ()

Added in API level 1

Returns this object's value as a float. Might involve rounding.

Returns

the primitive float value of this object.

public abstract int intValue ()

Added in API level 1

Returns this object's value as an int. Might involve rounding and/or truncating the value, so it fits into an int.

Returns

the primitive int value of this object.

public abstract long longValue ()

Added in API level 1

Returns this object's value as a long. Might involve rounding and/or truncating the value, so it fits into a long.

Returns

the primitive long value of this object.

public short shortValue ()

Added in API level 1

Returns this object's value as a short. Might involve rounding and/or truncating the value, so it fits into a short.

Returns

the primitive short value of this object.

Results

Interfaces

Classes

Enums

Exceptions

Errors

Number

Class Overview

Summary

Public Constructors

public Number ()

Public Methods

public byte byteValue ()

Returns

public abstract double doubleValue ()

Returns

public abstract float floatValue ()

Returns

public abstract int intValue ()

Returns

public abstract long longValue ()

Returns

public short shortValue ()

Returns