Question

what are identifiers?.............

Answer 1

An identifier is a name that identifies either a unique object or a unique class of objects, where the "object" or class may be an idea, physical [countable] object, or physical [noncountable] substance. 

Answer 2

Answer:

Identifiers are also called variables in Java programming. A variable is a named memory location, which contains a value. The value of a variable can change depending upon the circumstances and problems in a program.

A variable can possess any combination of letters without space. We can declare more than one variable of the same type in a statement.