Identifiers
Identifiers in Java
All Java components require names. Names used for classes, variables, and methods are called identifiers.
- All identifiers should begin with a letter (A to Z or a to z), currency character ($) or an underscore (_).
- A key word cannot be used as an identifier.
- Are case sensitive and have no maximum length
Examples:
- identifier
- username
- user_name
- _sys_var1
- $change