Files with class extension are mainly  related to the Java programming language and used for compiled Java source codes known as Class bytecode files.

There is one other file type using
the CLASS file extension!

empty icon.class - Gambas class source

Detailed description

Software that open class file

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CLASS file extension - Java bytecode class

What is class file? How to open class files?

File type specification:

Dangerous and malicious file type icon Dangerous and malicious file type

Internet related file type icon Internet related file type

class file icon: class filetype icon

File extension class is commonly used for Java Classes.  In the Java programming language, source files (*.java files) are compiled into (virtual) machine-readable class files.

Since Java is a platform-independent language, source code is compiled into an output file known as bytecode, which it stores in a class file.

If a source file has more than one class, each class is compiled into a separate class file, which can be loaded by any Java Virtual Machine (JVM).

MIME types:

The default software associated to open class file:

Java icon

Oracle Corporation logoJava  Multiplatform software

Company or developer:
Oracle Corporation

Java is a set of developing applications and specifications used to create software in Java programming language. Java is used on many computing platforms from desktop computers to mobile phones.

Java source code derives much syntax from C and C++ programming language but has a simpler object model. To run applications written in Java the Java runtime environment must be installed on a device.

Java Development Kit (JDK) icon

Oracle Corporation logoJava Development Kit (JDK)  Multiplatform software

Company or developer:
Oracle Corporation

 JDK is a development environment for building applications, applets, and components using the Java programming language.

Help how to open:

Use any compatible IDE, or source code editor to view content of *.class files.

How to convert:

IDE programs can "build" JAR packages that including *.classes and other content.

Find conversions from class file:

class to clas

class to jar

File identification strings:

ASCII code: Êþº¾

List of software applications associated to the .class file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open class file, edit class file, convert class file, view class file, play class file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting class files.

Software that open class file - Java bytecode class

Programs supporting the exension class on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about Java for open class file action.


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