Naming Convention

Education is not limited to just classrooms. It can be gained anytime, anywhere... - Ravi Ranjan (M.Tech-NIT)

Java naming conventions

Java naming convention is a rule to follow as you decide what to name your identifiers such as class, package, variable, constant, method etc.

But, it is not forced to follow. So, it is known as convention not rule.

All the classes, interfaces, packages, methods and fields of java programming language are given according to java naming convention.

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.

Name

Convention

class name

should start with uppercase letter and be a noun e.g. String, Color, Button, System, Thread etc.

interface name

should start with uppercase letter and be an adjective e.g. Run able, Remote, Action Listener etc.

method name

should start with lowercase letter and be a verb e.g. action Performed(), main(), print(), printing() etc.

variable name

should start with lowercase letter e.g. first Name, order Number etc.

package name

should be in lowercase letter e.g. java, Lang, sql, until etc.

constants name

Should be in uppercase letter. e.g. RED, YELLOW, MAX_PRIORITY etc.

Camel Case in java naming conventions

Java follows camel case syntax for naming the class, interface, method and variable.

If name is combined with two words, second word will start with uppercase letter always e.g. action Performed (), first Name, Action Event, Action Listener etc.