Java Names and Identifiers - Java Language Tutorial

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A name in Java is used to refer to and entity in a program.

There are two forms of names:

- Simple names, a simple name is a single identifier.
- Qualified names, a qualified name is divided into a name followed by a dot (".") followed by an identifier.

Identifiers may be of any length and may contain letters and digits drawn from the entire Unicode character set.
An identifier may not begin with a digit though.

Here are some examples of valid identifiers:

int k5;
float j;
String theCurrentTime;
Date the_current_time;

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