java.lang

Class Short

Table des matières
  • 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

      Fields 
      Modifier and Type Field and Description
      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

      Constructors 
      Constructor and Description
      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

      Methods 
      Modifier and Type Method and Description
      byte byteValue()
      Returns the value of this Short as a byte.
      static int compare(short x, short y)
      Compares two short values numerically.
      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; equal to the result of invoking intValue().
      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.

        

    • 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,
               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 or an ASCII plus sign '+' ('\u002B') to indicate a positive value. The resulting short 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') or plus sign '+' ('\u002B') 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.

      • 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 or an ASCII plus sign '+' ('\u002B') to indicate a positive 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.

      • 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 Short 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. This method will always cache values in the range -128 to 127, inclusive, and may cache other values outside of this range.
        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:
        Signopt DecimalNumeral
        Signopt 0x HexDigits
        Signopt 0X HexDigits
        Signopt # HexDigits
        Signopt 0 OctalDigits

        Sign:
        -
        +
        DecimalNumeral, HexDigits, and OctalDigits are as defined in section 3.10.1 of The Java™ Language Specification, except that underscores are not accepted between digits.

        The sequence of characters following an optional 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.

      • 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(), HashMap

      • 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

      • compare

        public static int compare(short x,
          short y)
        Compares two short values numerically. The value returned is identical to what would be returned by: 
            Short.valueOf(x).compareTo(Short.valueOf(y))
        Parameters:
        x - the first short to compare
        y - the second short to compare
        Returns:
        the value 0 if x == y; a value less than 0 if x < y; and a value greater than 0 if x > y
        Since:
        1.7

      • 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

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Document créé le 23/07/2006, dernière modification le 04/03/2020
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