There are 7 other file types using
the CLS file extension!

cls file icon.cls - ArcView geocoding classification file

cls file icon.cls - JavaScript class definition

cls file icon.cls - Microsoft Visual Basic 4 class module add-in

cls file icon.cls - Microsoft Visual C++ class definition

cls file icon.cls - AIM AOL Instant Messenger file

cls file icon.cls - SQLite 3 file

cls file icon.cls - LaTeX file

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CLS file extension - Java class definition

What is cls file? How to open cls files?

File type specification:

Source code and script file type icon Source code and script file type

The cls file extension is associated with the Java, a programming language and run-time environment available for various platforms, developed by Oracle.

The cls file contains class definition for Java.

The default software associated to cls file type:

Java icon

Oracle Corporation logo Java  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 logo Java 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 CLS files:

Use any Java IDE to open *.cls files.

How to convert file with extension CLS:

There is no way how to convert *.cls files to other formats.

List of software applications associated to the .cls file extension

Recommended software programs are sorted by OS platform (Windows, Mac OS X etc.) and possible program actions
that can be done with the file
: like open cls file, edit cls file, convert cls file, view cls file, play cls file etc. (if exist software for corresponding action in File-Extensions.org's database).

Hint:
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 of the cls files.

  • Open cls file
  • Save cls file
  • Edit cls file
  • Create cls file
  • Others cls file

Software that open cls file - Java class definition

Click on the link to get more information about listed programs for open cls file action.

Microsoft Windows:

Apple macOS / Mac OS X:

Linux/Unix:

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