local (machine)
When programming, this means whatever desktop / laptop computer you are using in-person to do your development. The computer available to you locally.
local (variable, Java)
A local is a variable that is only present in the method, it is not available to a wider scope, such as the class that contains the method in question, etc.
long (Java)
A primitive data type that stores integer values, where -263 <= value <= 263-1