search
HomeJavajavaTutorialWhat does class name mean in java

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

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!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
JVM performance vs other languagesJVM performance vs other languagesMay 14, 2025 am 12:16 AM

JVM'sperformanceiscompetitivewithotherruntimes,offeringabalanceofspeed,safety,andproductivity.1)JVMusesJITcompilationfordynamicoptimizations.2)C offersnativeperformancebutlacksJVM'ssafetyfeatures.3)Pythonisslowerbuteasiertouse.4)JavaScript'sJITisles

Java Platform Independence: Examples of useJava Platform Independence: Examples of useMay 14, 2025 am 12:14 AM

JavaachievesplatformindependencethroughtheJavaVirtualMachine(JVM),allowingcodetorunonanyplatformwithaJVM.1)Codeiscompiledintobytecode,notmachine-specificcode.2)BytecodeisinterpretedbytheJVM,enablingcross-platformexecution.3)Developersshouldtestacross

JVM Architecture: A Deep Dive into the Java Virtual MachineJVM Architecture: A Deep Dive into the Java Virtual MachineMay 14, 2025 am 12:12 AM

TheJVMisanabstractcomputingmachinecrucialforrunningJavaprogramsduetoitsplatform-independentarchitecture.Itincludes:1)ClassLoaderforloadingclasses,2)RuntimeDataAreafordatastorage,3)ExecutionEnginewithInterpreter,JITCompiler,andGarbageCollectorforbytec

JVM: Is JVM related to the OS?JVM: Is JVM related to the OS?May 14, 2025 am 12:11 AM

JVMhasacloserelationshipwiththeOSasittranslatesJavabytecodeintomachine-specificinstructions,managesmemory,andhandlesgarbagecollection.ThisrelationshipallowsJavatorunonvariousOSenvironments,butitalsopresentschallengeslikedifferentJVMbehaviorsandOS-spe

Java: Write Once, Run Anywhere (WORA) - A Deep Dive into Platform IndependenceJava: Write Once, Run Anywhere (WORA) - A Deep Dive into Platform IndependenceMay 14, 2025 am 12:05 AM

Java implementation "write once, run everywhere" is compiled into bytecode and run on a Java virtual machine (JVM). 1) Write Java code and compile it into bytecode. 2) Bytecode runs on any platform with JVM installed. 3) Use Java native interface (JNI) to handle platform-specific functions. Despite challenges such as JVM consistency and the use of platform-specific libraries, WORA greatly improves development efficiency and deployment flexibility.

Java Platform Independence: Compatibility with different OSJava Platform Independence: Compatibility with different OSMay 13, 2025 am 12:11 AM

JavaachievesplatformindependencethroughtheJavaVirtualMachine(JVM),allowingcodetorunondifferentoperatingsystemswithoutmodification.TheJVMcompilesJavacodeintoplatform-independentbytecode,whichittheninterpretsandexecutesonthespecificOS,abstractingawayOS

What features make java still powerfulWhat features make java still powerfulMay 13, 2025 am 12:05 AM

Javaispowerfulduetoitsplatformindependence,object-orientednature,richstandardlibrary,performancecapabilities,andstrongsecurityfeatures.1)PlatformindependenceallowsapplicationstorunonanydevicesupportingJava.2)Object-orientedprogrammingpromotesmodulara

Top Java Features: A Comprehensive Guide for DevelopersTop Java Features: A Comprehensive Guide for DevelopersMay 13, 2025 am 12:04 AM

The top Java functions include: 1) object-oriented programming, supporting polymorphism, improving code flexibility and maintainability; 2) exception handling mechanism, improving code robustness through try-catch-finally blocks; 3) garbage collection, simplifying memory management; 4) generics, enhancing type safety; 5) ambda expressions and functional programming to make the code more concise and expressive; 6) rich standard libraries, providing optimized data structures and algorithms.

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

VSCode Windows 64-bit Download

VSCode Windows 64-bit Download

A free and powerful IDE editor launched by Microsoft

SecLists

SecLists

SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SAP NetWeaver Server Adapter for Eclipse

SAP NetWeaver Server Adapter for Eclipse

Integrate Eclipse with SAP NetWeaver application server.