| Java 1.0 | serializable comparable |
This class provides an immutable object
wrapper around the long primitive data type. This
class also contains useful minimum and maximum constants and useful
conversion methods. parseLong(
) and
valueOf( ) convert a
string to a long or
to a Long, respectively. Each can take a radix
argument to specify the base the value is represented in.
toString( )
converts in the other direction and may
also take a radix argument.
toBinaryString( ), toOctalString(
), and toHexString( ) convert a
long to a string using base 2, base 8, and base
16. These methods treat the long as an unsigned
value. Other routines return the value of a Long
as various primitive types, and, finally, the getLong(
) methods return the
long value of a named property or the value of the
specified default.Java 5.0 adds a number of
static methods that operate on the bits of a long
value. Except for their argument type and return type, they are the
same as the Integer methods of the same name.
Figure 10-39. java.lang.Long
 public final class Long extends Number implements Comparable<Long> {
// Public Constructors
public Long (long value );
public Long (String s ) throws NumberFormatException;
// Public Constants
public static final long MAX_VALUE ; =9223372036854775807
public static final long MIN_VALUE ; =-9223372036854775808
5.0 public static final int SIZE ; =64
1.1 public static final Class<Long> TYPE ;
// Public Class Methods
5.0 public static int bitCount (long i );
1.2 public static Long decode (String nm ) throws NumberFormatException;
public static Long getLong (String nm );
public static Long getLong (String nm , Long val );
public static Long getLong (String nm , long val );
5.0 public static long highestOneBit (long i );
5.0 public static long lowestOneBit (long i );
5.0 public static int numberOfLeadingZeros (long i );
5.0 public static int numberOfTrailingZeros (long i );
public static long parseLong (String s ) throws NumberFormatException;
public static long parseLong (String s , int radix ) throws NumberFormatException;
5.0 public static long reverse (long i );
5.0 public static long reverseBytes (long i );
5.0 public static long rotateLeft (long i , int distance );
5.0 public static long rotateRight (long i , int distance );
5.0 public static int signum (long i );
public static String toBinaryString (long i );
public static String toHexString (long i );
public static String toOctalString (long i );
public static String toString (long i );
public static String toString (long i , int radix );
5.0 public static Long valueOf (long l );
public static Long valueOf (String s ) throws NumberFormatException;
public static Long valueOf (String s , int radix ) throws NumberFormatException;
// Methods Implementing Comparable
1.2 public int compareTo (Long anotherLong );
// Public Methods Overriding Number
1.1 public byte byteValue ( );
public double doubleValue ( );
public float floatValue ( );
public int intValue ( );
public long longValue ( );
1.1 public short shortValue ( );
// Public Methods Overriding Object
public boolean equals (Object obj );
public int hashCode ( );
public String toString ( );
}
|
لطفا منتظر باشید ...
