Java Naming rules

Java Naming rules

 

Hump rule:

All letters are in lowercase (including abbreviations) and the first letter of the word is in uppercase.

The first letter of each word is capitalized to get a big camper name.

Except for the first word, the first letter of each word is capitalized to get a (small) camper name.

 

In order to avoid ambiguity, the small and medium-sized hump method is called the hump method, and the large hump/Pascal method is called the big hump law.

 

1. Package

Project package naming rules: <domain name reversal>. <team name>. <Project Name>. For related projects, you can use the naming rules of <domain name reversal>. <team name>. <Parent Project Name>. <sub-project name>.

The name must contain lowercase English letters, and cannot contain underscores. (Except constants, underlines and other characters are not recommended in Java Naming Conventions)

Example:

com.cnblogs.niceboat.soyteam.anticorruptionsystem

 

2. Class/Object, Interface

Classes and interfaces use the big camper Method

Abstract classes start with "Abstract ".

The Exception class name uses "Exception" as the end of the class name

The Test class uses "Test" as the end of the class name

 

In interface-oriented programming, the naming rules for interface implementation classes are: <Interface Name> + "Impl ". The Hungarian naming method is forbidden.

Example (correct ):

Interface	Implementation class
HandsomeProvider	HandsomeProviderImpl

 

 

 

 

Hungarian naming method (not recommended ):

Interface	Implementation class
IHandsomeProvider	HandsomeProvider

 

 

 

 

3. Method/Function

The method is named by the camper method. Generally, a verb or verb + noun combination is used.

Set/obtain a value method, named setV/getV

Return length method, named length

Method for Determining boolean values, named isV

To convert an object to a specific type, you should name it toT.

Example:

GetSecretStage ()

Length ()

IsEmpty ()

ToSpecialFormat ()

 

 

4. Variable

Variable naming uses the hump method

Example:

OpenId

 

The name of changliang is separated by uppercase letters and underscores (_).

Example:

MAX_SUITABLE_SIZE

 

 

For more information about the naming rules of the hump rule (especially the abbreviations), see the following table:

Original	Camper Method	Big hump method	Not recommended
Xml http request	XmlHttpRequest	XmlHttpRequest	XMLHTTPRequest
New customer ID	NewCustomerId	NewCustomerId	NewCustomerID
Inner stopwatch	InnerStopwatch	InnerStopwatch	InnerStopWatch
Support IPv6 on iOS	SupportIpv6OnIos	SupportIpv6OnIos	SupportIPv6OniOS
Anglo-Saxon England	AngloSaxonEngland	AngloSaxonEngland	Anglo-SaxonEngland