THE PACKAGE JAVA.LANG

java.lang.Long

20.8

20.8.16

public static String toBinaryString(long i)

The argument is converted to an unsigned representation in binary radix (base 2);

this representation is returned as a string.

The result represents the unsigned magnitude of the argument. This equals the

argument plus 2

64

if the argument is negative; otherwise, it equals the argument.

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.

20.8.17

public static long parseLong(String s)

throws NumberFormatException

The argument is interpreted as representing a signed decimal integer. The compo 

nents of the string must all be decimal digits, except that the first character may be

 (

 \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

parseLong

 method that takes two arguments ( 20.8.18).

Note that neither

L

 nor

l

 is permitted to appear at the end of the string as a

type indicator, as would be permitted in Java source code ( 3.10.1).

20.8.18

public static long parseLong(String s, int radix)

throws NumberFormatException

The first argument is interpreted as representing a signed integer in the radix spec 

ified by the second argument. The components of the string must all be digits of

the specified radix (as determined by whether

Character.digit

 ( 20.5.23)

returns a nonnegative value), except that the first character may be

(

 \u002d 

) to indicate a negative value. The resulting

long

 value is returned.

Note that neither

L

 nor

l

 is permitted to appear at the end of the string as a

type indicator, as would be permitted in Java source code ( 3.10.1) 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 fol 

lowing situations occurs:

The first argument is

null

 or is a string of length zero.

The

radix

 is either smaller than

Character.MIN_RADIX

 ( 20.5.3) or larger

than

Character.MAX_RADIX

 ( 20.5.4).

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