Class name in Java
In Java programming, the class name refers to the name of the user-defined type. It is used to uniquely identify a class and represents a collection of specific objects, containing their shared data (fields) and behavior (methods).
Naming convention
There is the following naming convention for class names:
- Start with a capital letter
- Use word separation , for example:
Employee
,Student
- Avoid using Java keywords as class names
- Make sure the class name is unique in the project
Class names and objects
The class name itself does not represent any object. To create an instance of an object, the keyword new
is used. For example:
Employee employee1 = new Employee(); Student student1 = new Student();
Class Name and Inheritance
When a class inherits from another class, the class name of the child class contains the class name of the parent class. For example:
class Child extends Parent { // ... }
Class name and interface
When a class implements an interface, the implements
keyword will be added after the class name, followed by The name of the interface. For example:
class Employee implements Comparable<Employee> { // ... }
The role of class name in Java
The class name has the following role in Java:
- Uniquely identifies a class
- Create a class instance
- Represent class inheritance relationship
- Implement the interface
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