Spec-Zone .ru спецификации, руководства, описания, API

java.lang
Class Short

java.lang.Object
  java.lang.Number
      java.lang.Short

All Implemented Interfaces:

Serializable, Comparable<Short>

public final class Short
extends Number
implements Comparable<Short>

The Short class wraps a value of primitive type short in an object. An object of type Short contains a single field whose type is short.

In addition, this class provides several methods for converting a short to a String and a String to a short, as well as other constants and methods useful when dealing with a short.

Since:

JDK1.1

See Also:

Number, Serialized Form

Field Summary

static short	MAX_VALUE A constant holding the maximum value a short can have, 215-1.
static short	MIN_VALUE A constant holding the minimum value a short can have, -215.
static int	SIZE The number of bits used to represent a short value in two's complement binary form.
static Class<Short>	TYPE The Class instance representing the primitive type short.

Constructor Summary

Short(short value)
Constructs a newly allocated Short object that represents the specified short value.

Short(String s)
Constructs a newly allocated Short object that represents the short value indicated by the String parameter.

Method Summary

byte	byteValue() Returns the value of this Short as a byte.
int	compareTo(Short anotherShort) Compares two Short objects numerically.
static Short	decode(String nm) Decodes a String into a Short.
double	doubleValue() Returns the value of this Short as a double.
boolean	equals(Object obj) Compares this object to the specified object.
float	floatValue() Returns the value of this Short as a float.
int	hashCode() Returns a hash code for this Short.
int	intValue() Returns the value of this Short as an int.
long	longValue() Returns the value of this Short as a long.
static short	parseShort(String s) Parses the string argument as a signed decimal short.
static short	parseShort(String s, int radix) Parses the string argument as a signed short in the radix specified by the second argument.
static short	reverseBytes(short i) Returns the value obtained by reversing the order of the bytes in the two's complement representation of the specified short value.
short	shortValue() Returns the value of this Short as a short.
String	toString() Returns a String object representing this Short's value.
static String	toString(short s) Returns a new String object representing the specified short.
static Short	valueOf(short s) Returns a Short instance representing the specified short value.
static Short	valueOf(String s) Returns a Short object holding the value given by the specified String.
static Short	valueOf(String s, int radix) Returns a Short object holding the value extracted from the specified String when parsed with the radix given by the second argument.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

MIN_VALUE

public static final short MIN_VALUE

A constant holding the minimum value a short can have, -2¹⁵.

See Also:

Constant Field Values

MAX_VALUE

public static final short MAX_VALUE

A constant holding the maximum value a short can have, 2¹⁵-1.

See Also:

Constant Field Values

TYPE

public static final Class<Short> TYPE

The Class instance representing the primitive type short.

SIZE

public static final int SIZE

The number of bits used to represent a short value in two's complement binary form.

Since:

1.5

See Also:

Constant Field Values

Constructor Detail

Short

public Short(short value)

Constructs a newly allocated Short object that represents the specified short value.

Parameters:

value - the value to be represented by the Short.

Short

public Short(String s)
      throws NumberFormatException

Constructs a newly allocated Short object that represents the short value indicated by the String parameter. The string is converted to a short value in exactly the manner used by the parseShort method for radix 10.

Parameters:

s - the String to be converted to a Short

Throws:

NumberFormatException - If the String does not contain a parsable short.

See Also:

parseShort(java.lang.String, int)

Method Detail

toString

public static String toString(short s)

Returns a new String object representing the specified short. The radix is assumed to be 10.

Parameters:

s - the short to be converted

Returns:

the string representation of the specified short

See Also:

Integer.toString(int)

parseShort

public static short parseShort(String s)
                        throws NumberFormatException

Parses the string argument as a signed decimal short. The characters in the string must all be decimal digits, except that the first character may be an ASCII minus sign '-' ('\u002D') to indicate a negative value. The resulting short value is returned, exactly as if the argument and the radix 10 were given as arguments to the parseShort(java.lang.String, int) method.

Parameters:

s - a String containing the short representation to be parsed

Returns:

the short value represented by the argument in decimal.

Throws:

NumberFormatException - If the string does not contain a parsable short.

parseShort

public static short parseShort(String s,
                               int radix)
                        throws NumberFormatException

Parses the string argument as a signed short in the radix specified by the second argument. The characters in the string must all be digits, of the specified radix (as determined by whether Character.digit(char, int) returns a nonnegative value) except that the first character may be an ASCII minus sign '-' ('\u002D') to indicate a negative value. The resulting byte value is returned.

An exception of type NumberFormatException is thrown if any of the following situations occurs:

• The first argument is null or is a string of length zero.
• The radix is either smaller than Character.MIN_RADIX or larger than Character.MAX_RADIX.
• Any character of the string is not a digit of the specified radix, except that the first character may be a minus sign '-' ('\u002D') provided that the string is longer than length 1.
• The value represented by the string is not a value of type short.

Parameters:

s - the String containing the short representation to be parsed

radix - the radix to be used while parsing s

Returns:

the short represented by the string argument in the specified radix.

Throws:

NumberFormatException - If the String does not contain a parsable short.

valueOf

public static Short valueOf(String s,
                            int radix)
                     throws NumberFormatException

Returns a Short object holding the value extracted from the specified String when parsed with the radix given by the second argument. The first argument is interpreted as representing a signed short in the radix specified by the second argument, exactly as if the argument were given to the parseShort(java.lang.String, int) method. The result is a Short object that represents the short value specified by the string.

In other words, this method returns a Short object equal to the value of:

new Short(Short.parseShort(s, radix))

Parameters:

s - the string to be parsed

radix - the radix to be used in interpreting s

Returns:

a Short object holding the value represented by the string argument in the specified radix.

Throws:

NumberFormatException - If the String does not contain a parsable short.

valueOf

public static Short valueOf(String s)
                     throws NumberFormatException

Returns a Short object holding the value given by the specified String. The argument is interpreted as representing a signed decimal short, exactly as if the argument were given to the parseShort(java.lang.String) method. The result is a Short object that represents the short value specified by the string.

In other words, this method returns a Byte object equal to the value of:

new Short(Short.parseShort(s))

Parameters:

s - the string to be parsed

Returns:

a Short object holding the value represented by the string argument

Throws:

NumberFormatException - If the String does not contain a parsable short.

valueOf

public static Short valueOf(short s)

Returns a Short instance representing the specified short value. If a new Short instance is not required, this method should generally be used in preference to the constructor Short(short), as this method is likely to yield significantly better space and time performance by caching frequently requested values.

Parameters:

s - a short value.

Returns:

a Short instance representing s.

Since:

1.5

decode

public static Short decode(String nm)
                    throws NumberFormatException

Decodes a String into a Short. Accepts decimal, hexadecimal, and octal numbers given by the following grammar:

DecodableString:

Sign_opt DecimalNumeral

Sign_opt 0x HexDigits

Sign_opt 0X HexDigits

Sign_opt # HexDigits

Sign_opt 0 OctalDigits

Sign:

-

DecimalNumeral, HexDigits, and OctalDigits are defined in §3.10.1 of the Java Language Specification.

The sequence of characters following an (optional) negative sign and/or radix specifier ("0x", "0X", "#", or leading zero) is parsed as by the Short.parseShort method with the indicated radix (10, 16, or 8). This sequence of characters must represent a positive value or a NumberFormatException will be thrown. The result is negated if first character of the specified String is the minus sign. No whitespace characters are permitted in the String.

Parameters:

nm - the String to decode.

Returns:

a Short object holding the short value represented by nm

Throws:

NumberFormatException - if the String does not contain a parsable short.

See Also:

parseShort(java.lang.String, int)

byteValue

public byte byteValue()

Returns the value of this Short as a byte.

Overrides:

byteValue in class Number

Returns:

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

shortValue

public short shortValue()

Returns the value of this Short as a short.

Overrides:

shortValue in class Number

Returns:

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

intValue

public int intValue()

Returns the value of this Short as an int.

Specified by:

intValue in class Number

Returns:

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

longValue

public long longValue()

Returns the value of this Short as a long.

Specified by:

longValue in class Number

Returns:

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

floatValue

public float floatValue()

Returns the value of this Short as a float.

Specified by:

floatValue in class Number

Returns:

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

doubleValue

public double doubleValue()

Returns the value of this Short as a double.

Specified by:

doubleValue in class Number

Returns:

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

toString

public String toString()

Returns a String object representing this Short's value. The value is converted to signed decimal representation and returned as a string, exactly as if the short value were given as an argument to the toString(short) method.

Overrides:

toString in class Object

Returns:

a string representation of the value of this object in base 10.

hashCode

public int hashCode()

Returns a hash code for this Short.

Overrides:

hashCode in class Object

Returns:

a hash code value for this object.

See Also:

Object.equals(java.lang.Object), Hashtable

equals

public boolean equals(Object obj)

Compares this object to the specified object. The result is true if and only if the argument is not null and is a Short object that contains the same short value as this object.

Overrides:

equals in class Object

Parameters:

obj - the object to compare with

Returns:

true if the objects are the same; false otherwise.

See Also:

Object.hashCode(), Hashtable

compareTo

public int compareTo(Short anotherShort)

Compares two Short objects numerically.

Specified by:

compareTo in interface Comparable<Short>

Parameters:

anotherShort - the Short to be compared.

Returns:

the value 0 if this Short is equal to the argument Short; a value less than 0 if this Short is numerically less than the argument Short; and a value greater than 0 if this Short is numerically greater than the argument Short (signed comparison).

Since:

1.2

reverseBytes

public static short reverseBytes(short i)

Returns the value obtained by reversing the order of the bytes in the two's complement representation of the specified short value.

Returns:

the value obtained by reversing (or, equivalently, swapping) the bytes in the specified short value.

Since:

1.5