Long

Long

java.lang

---

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  ( );   }