Java Naming conventions: A naming convention is a rule to follow as you decide what to name your identifiers e.g. class, package, variable, constant, method etc.
But, it is not forced to follow. So, it is known as convention not rule.
Advantage of naming conventions in java
By using standard Java naming conventions, you make your code easier to read for
yourself and for other programmers. Readability of Java program is very
important. It indicates that less time is spent to figure out what the code
does.
|
Identifier Type |
Rules for Naming
|
Examples |
| class name | should start with uppercase letter and be a noun | String, Color, Button, System, Thread etc |
| interface name | should start with uppercase letter and be an adjective | Runnable, Remote, ActionListener etc. |
| method name | should start with lowercase letter and be a verb | actionPerformed(), main(), print(), println() etc. |
| variable name | should start with lowercase letter | firstName, orderNumber etc |
| package name | should be in lowercase letter | java, lang, sql, util etc |
| constants name | should be in uppercase letter | GREEN,RED, YELLOW, MAX_PRIORITY etc. |