Description
The long numeric type represents a 64-bit
signed two's-complement integer. The default value of a long instance
variable, class variable, and array component is zero, that is, 0. The value of long
is an integer from 9223372036854775808 to 9223372036854775807, inclusive.
Example
You can declare a long variable, and give it an initial value when you
declare it:
long aBigValue = 50000000;
long aBiggerValue = aBigValue * 2;
Source: The Java Language Specification. Copyright (C) 1996 Sun Microsystems, Inc.