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Java in a Nutshell

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The java.lang Package

25.36 java.lang.Long (JDK 1.0)

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 that 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.

public final class Long extends Number {
    // Public Constructors
            public Long(long value);
            public Long(String s) throws NumberFormatException;
    // Constants
            public static final long MAX_VALUE;
            public static final long MIN_VALUE;
        1.1public static final Class TYPE;
    // Class Methods
            public static Long getLong(String nm);
            public static Long getLong(String nm, long val);
            public static Long getLong(String nm, Long val);
            public static long parseLong(String s, int radix) throws NumberFormatException;
            public static long parseLong(String s) throws NumberFormatException;
            public static String toBinaryString(long i);
            public static String toHexString(long i);
            public static String toOctalString(long i);
            public static String toString(long i, int radix);
            public static String toString(long i);
            public static Long valueOf(String s, int radix) throws NumberFormatException;
            public static Long valueOf(String s) throws NumberFormatException;
    // Public Instance Methods
        1.1public byte byteValue();  // Overrides Number
            public double doubleValue();  // Defines Number
            public boolean equals(Object obj);  // Overrides Object
            public float floatValue();  // Defines Number
            public int hashCode();  // Overrides Object
            public int intValue();  // Defines Number
            public long longValue();  // Defines Number
        1.1public short shortValue();  // Overrides Number
            public String toString();  // Overrides Object



Passed To:


Returned By:

Long.getLong(), Long.valueOf()

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