Byte

See also:

• Number

BYTES

 public static final int BYTES

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

Constant Value: 1 (0x00000001)

MAX_VALUE

 public static final byte MAX_VALUE

A constant holding the maximum value a byte can have, 2⁷-1.

Constant Value: 127 (0x0000007f)

MIN_VALUE

 public static final byte MIN_VALUE

A constant holding the minimum value a byte can have, -2⁷.

Constant Value: -128 (0xffffff80)

SIZE

 public static final int SIZE

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

Constant Value: 8 (0x00000008)

TYPE

 public static final Class<Byte> TYPE

The Class instance representing the primitive type byte.

Byte

 public Byte (byte value)

This constructor is deprecated.
It is rarely appropriate to use this constructor. The static factory valueOf(byte) is generally a better choice, as it is likely to yield significantly better space and time performance.

Constructs a newly allocated Byte object that represents the specified byte value.

Byte

 public Byte (String s)

This constructor is deprecated.
It is rarely appropriate to use this constructor. Use parseByte(java.lang.String) to convert a string to a byte primitive, or use valueOf(java.lang.String) to convert a string to a Byte object.

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

byteValue

 public byte byteValue ()

Returns the value of this Byte as a byte.

compare

 public static int compare (byte x, byte y)

Compares two byte values numerically. The value returned is identical to what would be returned by:

 Byte.valueOf(x).compareTo(Byte.valueOf(y)) 

compareTo

 public int compareTo (Byte anotherByte)

Compares two Byte objects numerically.

compareUnsigned

 public static int compareUnsigned (byte x, byte y)

Compares two byte values numerically treating the values as unsigned.

decode

 public static Byte decode (String nm)

Decodes a String into a Byte. 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:

-

+

The sequence of characters following an optional sign and/or radix specifier ("0x", "0X", "#", or leading zero) is parsed as by the Byte.parseByte 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.

doubleValue

 public double doubleValue ()

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

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 Byte object that contains the same byte value as this object.

floatValue

 public float floatValue ()

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

hashCode

 public int hashCode ()

Returns a hash code for this Byte; equal to the result of invoking intValue().

hashCode

 public static int hashCode (byte value)

Returns a hash code for a byte value; compatible with Byte.hashCode().

intValue

 public int intValue ()

Returns the value of this Byte as an int after a widening primitive conversion.

longValue

 public long longValue ()

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

parseByte

 public static byte parseByte (String s)

Parses the string argument as a signed decimal byte. 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 byte value is returned, exactly as if the argument and the radix 10 were given as arguments to the parseByte(java.lang.String, int) method.

parseByte

 public static byte parseByte (String s, int radix)

Parses the string argument as a signed byte 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 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') 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 byte.

shortValue

 public short shortValue ()

Returns the value of this Byte as a short after a widening primitive conversion.

toString

 public String toString ()

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

toString

 public static String toString (byte b)

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

toUnsignedInt

 public static int toUnsignedInt (byte x)

Converts the argument to an int by an unsigned conversion. In an unsigned conversion to an int, the high-order 24 bits of the int are zero and the low-order 8 bits are equal to the bits of the byte argument. Consequently, zero and positive byte values are mapped to a numerically equal int value and negative byte values are mapped to an int value equal to the input plus 2⁸.

toUnsignedLong

 public static long toUnsignedLong (byte x)

Converts the argument to a long by an unsigned conversion. In an unsigned conversion to a long, the high-order 56 bits of the long are zero and the low-order 8 bits are equal to the bits of the byte argument. Consequently, zero and positive byte values are mapped to a numerically equal long value and negative byte values are mapped to a long value equal to the input plus 2⁸.

valueOf

 public static Byte valueOf (String s)

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

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

new Byte(Byte.parseByte(s))

valueOf

 public static Byte valueOf (String s, int radix)

Returns a Byte 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 byte in the radix specified by the second argument, exactly as if the argument were given to the parseByte(java.lang.String, int) method. The result is a Byte object that represents the byte value specified by the string.

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

new Byte(Byte.parseByte(s, radix))

valueOf

 public static Byte valueOf (byte b)

Returns a Byte instance representing the specified byte value. If a new Byte instance is not required, this method should generally be used in preference to the constructor Byte(byte), as this method is likely to yield significantly better space and time performance since all byte values are cached.