What does class name mean in java

The class name in Java uniquely identifies the class. It must start with a capital letter, and the first letter of subsequent words must also be capitalized. It can only contain letters, numbers, underscores and dollar signs. It cannot have spaces or special characters. It cannot be used in Java Reserved words should reflect the category purpose and function. It is recommended to use camel nomenclature (for example: CustomerInformation).

Class name in Java

The class name in Java represents the identifier of a class and is used for uniqueness to identify this class. Class names must adhere to the following rules:

• must begin with a capital letter.
• The first letter of each subsequent word must also be capitalized.
• Contains only letters, numbers, underscores, and dollar signs ($).
• cannot contain spaces or special characters.
• Cannot use Java reserved words.

The meaning of class names

The class name should reflect the purpose and function of the class, making it easy to understand and identify. For example:

• Customer class represents customer information.
• Employee class represents employee information.
• Book class represents book information.

Naming Convention

Java programming convention recommends using Camel-Case to name classes. In this convention:

• The first letter is capitalized, indicating the class name.
• The first letter of each word is capitalized to indicate the beginning of the word.

For example: CustomerInformation class.

Example

The following are examples of valid Java class names:

• Student
• BookstoreManager
• ShoppingCart
• $Util
• _Helper

Invalid class name example

• 123 (cannot start with a number)
• customer (The first letter must be capitalized)
• cat dog (Cannot contain spaces)
• *Info (Cannot contain special characters)
• static (a Java reserved word)

The above is the detailed content of What does class name mean in java. For more information, please follow other related articles on the PHP Chinese website!