Long JDK 1.6)

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publicstatic int bitCount (long i)

Returns the number of one-bits in the two's complement binary representation of the specified long value.

public byte byteValue () [Overrides Number]

Returns the value of this Long as a byte.

public int compareTo (Long anotherLong)

Compares two Long objects numerically.

Compares two Long objects numerically.
Returns: the value 0 if this Long is equal to the argument Long; a value less than 0 if this Long is numerically less than the argument Long; and a value greater than 0 if this Long is numerically greater than the argument Long (signed comparison).
Parameters:
- anotherLong - the Long to be compared.
Since: 1.2

publicstatic Long decode (String nm) throws NumberFormatException

Decodes a String into a Long.

Decodes a String into a Long. 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 Long.parseLong 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.
Returns: a Long object holding the long value represented by nm
Parameters:
- nm - the String to decode.
Throws:
- NumberFormatException - if the String does not contain a parsable long.
Since: 1.2
See Also: Long.parseLong(String, int),

public double doubleValue () [Specified in Number]

Returns the value of this Long as a double.

public boolean equals (Object obj)

Compares this object to the specified object.

Compares this object to the specified object. The result is
true if and only if the argument is not
null and is a Long object that
contains the same long value as this object.
Returns: true if the objects are the same; false otherwise.
Parameters:
- obj - the object to compare with.

public float floatValue () [Specified in Number]

Returns the value of this Long as a float.

pack-privatestatic void getChars (long i, int index, char[] buf)

Places characters representing the integer i into the character array buf.

publicstatic Long getLong (String nm)

Determines the long value of the system property with the specified name.

The first argument is treated as the name of a system property. System properties are accessible through the System.getProperty(java.lang.String) method. The string value of this property is then interpreted as a long value and a Long object representing this value is returned. Details of possible numeric formats can be found with the definition of getProperty.

If there is no property with the specified name, if the specified name is empty or null, or if the property does not have the correct numeric format, then null is returned.

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

getLong(nm, null)

Returns: the Long value of the property.
Parameters:
- nm - property name.
See Also: System.getProperty(java.lang.String), System.getProperty(java.lang.String, java.lang.String),

publicstatic Long getLong (String nm, long val)

Determines the long value of the system property with the specified name.

The first argument is treated as the name of a system property. System properties are accessible through the System.getProperty(java.lang.String) method. The string value of this property is then interpreted as a long value and a Long object representing this value is returned. Details of possible numeric formats can be found with the definition of getProperty.

The second argument is the default value. A Long object that represents the value of the second argument is returned if there is no property of the specified name, if the property does not have the correct numeric format, or if the specified name is empty or null.

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

getLong(nm, new Long(val))

but in practice it may be implemented in a manner such as:

 Long result = getLong(nm, null);
 return (result == null) ? new Long(val) : result;

to avoid the unnecessary allocation of a Long object when the default value is not needed.
Returns: the Long value of the property.
Parameters:
- nm - property name.
- val - default value.
See Also: System.getProperty(java.lang.String), System.getProperty(java.lang.String, java.lang.String),

publicstatic Long getLong (String nm, Long val)

Returns the long value of the system property with the specified name.

Returns the long value of the system property with the specified name. The first argument is treated as the name of a system property. System properties are accessible through the System.getProperty(java.lang.String) method. The string value of this property is then interpreted as a long value, as per the Long.decode method, and a Long object representing this value is returned.

If the property value begins with the two ASCII characters 0x or the ASCII character #, not followed by a minus sign, then the rest of it is parsed as a hexadecimal integer exactly as for the method Long.valueOf(java.lang.String, int) with radix 16.
If the property value begins with the ASCII character 0 followed by another character, it is parsed as an octal integer exactly as by the method Long.valueOf(java.lang.String, int) with radix 8.
Otherwise the property value is parsed as a decimal integer exactly as by the method Long.valueOf(java.lang.String, int) with radix 10.

Note that, in every case, neither L ('\u004C') nor l ('\u006C') is permitted to appear at the end of the property value as a type indicator, as would be permitted in Java programming language source code.

The second argument is the default value. The default value is returned if there is no property of the specified name, if the property does not have the correct numeric format, or if the specified name is empty or null.
Returns: the Long value of the property.
Parameters:
- nm - property name.
- val - default value.
See Also: System.getProperty(java.lang.String), System.getProperty(java.lang.String, java.lang.String), Long.decode(java.lang.String),

public int hashCode ()

Returns a hash code for this Long.

Returns a hash code for this Long. The result is
the exclusive OR of the two halves of the primitive
long value held by this Long
object. That is, the hashcode is the value of the expression:


 (int)(this.longValue()^(this.longValue()>>>32))

Returns: a hash code value for this object.

publicstatic long highestOneBit (long i)

Returns a long value with at most a single one-bit, in the position of the highest-order ("leftmost") one-bit in the specified long value.

public int intValue () [Specified in Number]

Returns the value of this Long as an int.

public long longValue () [Specified in Number]

Returns the value of this Long as a long value.

publicstatic long lowestOneBit (long i)

Returns a long value with at most a single one-bit, in the position of the lowest-order ("rightmost") one-bit in the specified long value.

publicstatic int numberOfLeadingZeros (long i)

Returns the number of zero bits preceding the highest-order ("leftmost") one-bit in the two's complement binary representation of the specified long value.

publicstatic int numberOfTrailingZeros (long i)

Returns the number of zero bits following the lowest-order ("rightmost") one-bit in the two's complement binary representation of the specified long value.

publicstatic long parseLong (String s) throws NumberFormatException

Parses the string argument as a signed decimal long.

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

Note that neither the character L ('\u004C') nor l ('\u006C') is permitted to appear at the end of the string as a type indicator, as would be permitted in Java programming language source code.
Returns: the long represented by the argument in decimal.
Parameters:
- s - a String containing the long representation to be parsed
Throws:
- NumberFormatException - if the string does not contain a parsable long.

publicstatic long parseLong (String s, int radix) throws NumberFormatException

Parses the string argument as a signed long in the radix specified by the second argument.

Parses the string argument as a signed long 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 long value is returned.

Note that neither the character L ('\u004C') nor l ('\u006C') is permitted to appear at the end of the string as a type indicator, as would be permitted in Java programming language source code - except that either L or l may appear as a digit for a radix greater than 22.

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 long.

Examples:

 parseLong("0", 10) returns 0L
 parseLong("473", 10) returns 473L
 parseLong("-0", 10) returns 0L
 parseLong("-FF", 16) returns -255L
 parseLong("1100110", 2) returns 102L
 parseLong("99", 8) throws a NumberFormatException
 parseLong("Hazelnut", 10) throws a NumberFormatException
 parseLong("Hazelnut", 36) returns 1356099454469L

Returns: the long represented by the string argument in the specified radix.
Parameters:
- s - the String containing the long representation to be parsed.
- radix - the radix to be used while parsing s.
Throws:
- NumberFormatException - if the string does not contain a parsable long.

publicstatic long reverse (long i)

Returns the value obtained by reversing the order of the bits in the two's complement binary representation of the specified long value.

publicstatic long reverseBytes (long i)

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

publicstatic long rotateLeft (long i, int distance)

Returns the value obtained by rotating the two's complement binary representation of the specified long value left by the specified number of bits.

publicstatic long rotateRight (long i, int distance)

Returns the value obtained by rotating the two's complement binary representation of the specified long value right by the specified number of bits.

public short shortValue () [Overrides Number]

Returns the value of this Long as a short.

publicstatic int signum (long i)

Returns the signum function of the specified long value.

pack-privatestatic int stringSize (long x)

publicstatic String toBinaryString (long i)

Returns a string representation of the long argument as an unsigned integer in base 2.

The unsigned long value is the argument plus 2⁶⁴ if the argument is negative; otherwise, it is equal to the argument. This value is converted to a string of ASCII digits in binary (base 2) with no extra leading 0s. If the unsigned magnitude is zero, it is represented by a single zero character '0' ('\u0030'); otherwise, the first character of the representation of the unsigned magnitude will not be the zero character. The characters '0' ('\u0030') and '1' ('\u0031') are used as binary digits.
Returns: the string representation of the unsigned long value represented by the argument in binary (base 2).
Parameters:
- i - a long to be converted to a string.
Since: JDK 1.0.2

publicstatic String toHexString (long i)

Returns a string representation of the long argument as an unsigned integer in base 16.

The unsigned long value is the argument plus 2⁶⁴ if the argument is negative; otherwise, it is equal to the argument. This value is converted to a string of ASCII digits in hexadecimal (base 16) with no extra leading 0s. If the unsigned magnitude is zero, it is represented by a single zero character '0' ('\u0030'); otherwise, the first character of the representation of the unsigned magnitude will not be the zero character. The following characters are used as hexadecimal digits:

 0123456789abcdef

These are the characters '\u0030' through '\u0039' and '\u0061' through '\u0066'. If uppercase letters are desired, the String.toUpperCase() method may be called on the result:

 Long.toHexString(n).toUpperCase()

Returns: the string representation of the unsigned long value represented by the argument in hexadecimal (base 16).
Parameters:
- i - a long to be converted to a string.
Since: JDK 1.0.2

publicstatic String toOctalString (long i)

Returns a string representation of the long argument as an unsigned integer in base 8.

The unsigned long value is the argument plus 2⁶⁴ if the argument is negative; otherwise, it is equal to the argument. This value is converted to a string of ASCII digits in octal (base 8) with no extra leading 0s.

If the unsigned magnitude is zero, it is represented by a single zero character '0' ('\u0030'); otherwise, the first character of the representation of the unsigned magnitude will not be the zero character. The following characters are used as octal digits:

01234567

These are the characters '\u0030' through '\u0037'.
Returns: the string representation of the unsigned long value represented by the argument in octal (base 8).
Parameters:
- i - a long to be converted to a string.
Since: JDK 1.0.2

public String toString ()

Returns a String object representing this Long's value.

Returns a String object representing this
Long's value. The value is converted to signed
decimal representation and returned as a string, exactly as if
the long value were given as an argument to the
Long.toString(long) method.
Returns: a string representation of the value of this object in base 10.

publicstatic String toString (long i)

Returns a String object representing the specified long.

Returns a String object representing the specified
long. The argument is converted to signed decimal
representation and returned as a string, exactly as if the
argument and the radix 10 were given as arguments to the Long.toString(long, int) method.
Returns: a string representation of the argument in base 10.
Parameters:
- i - a long to be converted.

publicstatic String toString (long i, int radix)

Returns a string representation of the first argument in the radix specified by the second argument.

If the radix is smaller than Character.MIN_RADIX or larger than Character.MAX_RADIX, then the radix 10 is used instead.

If the first argument is negative, the first element of the result is the ASCII minus sign '-' ('\u002d'). If the first argument is not negative, no sign character appears in the result.

The remaining characters of the result represent the magnitude of the first argument. If the magnitude is zero, it is represented by a single zero character '0' ('\u0030'); otherwise, the first character of the representation of the magnitude will not be the zero character. The following ASCII characters are used as digits:

   0123456789abcdefghijklmnopqrstuvwxyz

These are '\u0030' through '\u0039' and '\u0061' through '\u007a'. If radix is N, then the first N of these characters are used as radix-N digits in the order shown. Thus, the digits for hexadecimal (radix 16) are 0123456789abcdef. If uppercase letters are desired, the String.toUpperCase() method may be called on the result:

 Long.toString(n, 16).toUpperCase()

Returns: a string representation of the argument in the specified radix.
Parameters:
- i - a longto be converted to a string.
- radix - the radix to use in the string representation.
See Also: Character.MAX_RADIX, Character.MIN_RADIX,

publicstatic Long valueOf (long l)

Returns a Long instance representing the specified long value.

publicstatic Long valueOf (String s) throws NumberFormatException

Returns a Long object holding the value of the specified String.

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

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

 new Long(Long.parseLong(s))

Returns: a Long object holding the value represented by the string argument.
Parameters:
- s - the string to be parsed.
Throws:
- NumberFormatException - If the string cannot be parsed as a long.

publicstatic Long valueOf (String s, int radix) throws NumberFormatException

Returns a Long object holding the value extracted from the specified String when parsed with the radix given by the second argument.

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

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

new Long(Long.parseLong(s, radix))

Returns: a Long object holding the value represented by the string argument in the specified radix.
Parameters:
- s - the string to be parsed
- radix - the radix to be used in interpreting s
Throws:
- NumberFormatException - If the String does not contain a parsable long.