Java compact1, compact2, compact3 java.lang Class Short（JDK8）

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

• BYTES

  public static final int BYTES

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

  Since:

  1.8

  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:

  Sign_opt DecimalNumeral

  Sign_opt 0x HexDigits

  Sign_opt 0X HexDigits

  Sign_opt # HexDigits

  Sign_opt 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 after a narrowing primitive conversion.

  Overrides:

  byteValue in class Number

  Returns:

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

  See The Java™ Language Specification:

  5.1.3 Narrowing Primitive Conversions

• 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 after a widening primitive conversion.

  Specified by:

  intValue in class Number

  Returns:

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

  See The Java™ Language Specification:

  5.1.2 Widening Primitive Conversions

• longValue

  public long longValue()

  Returns the value of this Short as a long after a widening primitive conversion.

  Specified by:

  longValue in class Number

  Returns:

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

  See The Java™ Language Specification:

  5.1.2 Widening Primitive Conversions

• floatValue

  public float floatValue()

  Returns the value of this Short as a float after a widening primitive conversion.

  Specified by:

  floatValue in class Number

  Returns:

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

  See The Java™ Language Specification:

  5.1.2 Widening Primitive Conversions

• doubleValue

  public double doubleValue()

  Returns the value of this Short as a double after a widening primitive conversion.

  Specified by:

  doubleValue in class Number

  Returns:

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

  See The Java™ Language Specification:

  5.1.2 Widening Primitive Conversions

• 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; equal to the result of invoking intValue().

  Overrides:

  hashCode in class Object

  Returns:

  a hash code value for this Short

  See Also:

  Object.equals(java.lang.Object), System.identityHashCode(java.lang.Object)

• hashCode

  public static int hashCode(short value)

  Returns a hash code for a short value; compatible with Short.hashCode().

  Parameters:

  value - the value to hash

  Returns:

  a hash code value for a short value.

  Since:

  1.8

• 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.

  Parameters:

  i - the value whose bytes are to be reversed

  Returns:

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

  Since:

  1.5

• toUnsignedInt

  public static int toUnsignedInt(short x)

  Converts the argument to an int by an unsigned conversion. In an unsigned conversion to an int, the high-order 16 bits of the int are zero and the low-order 16 bits are equal to the bits of the short argument. Consequently, zero and positive short values are mapped to a numerically equal int value and negative short values are mapped to an int value equal to the input plus 2¹⁶.

  Parameters:

  x - the value to convert to an unsigned int

  Returns:

  the argument converted to int by an unsigned conversion

  Since:

  1.8

• toUnsignedLong

  public static long toUnsignedLong(short x)

  Converts the argument to a long by an unsigned conversion. In an unsigned conversion to a long, the high-order 48 bits of the long are zero and the low-order 16 bits are equal to the bits of the short argument. Consequently, zero and positive short values are mapped to a numerically equal long value and negative short values are mapped to a long value equal to the input plus 2¹⁶.

  Parameters:

  x - the value to convert to an unsigned long

  Returns:

  the argument converted to long by an unsigned conversion

  Since:

  1.8