CLA file format description

Many people often share .cla files without providing instructions on how to use them. This can make it difficult for users to determine which program is compatible for editing, converting, or printing .cla files. To address this issue, we have created this page to offer assistance and guidance on handling .cla files. We provide information on compatible software, editing instructions and conversion options to help users effectively interact with .cla files.

Our aim is to simplify the process and promote seamless use of the .cla file format.

2 filename extension(s) found in our database.

.cla - Clarion for DOS Source Code

The CLA development files are related to Clarion. The CLA file is a Clarion for DOS Source Code. Clarion is a user friendly 4GL DBMS and programming environment for DOS and Windows.

Development files
- / -
Clarion for DOS Source Code related extensions:
Clarion for Windows Application
Clarion App Backup
Clarion Source Code
Clarion 7 Project
Clarion for Windows Embed Points Data
Clarion Database Keys

.class - Java Class Data

The CLASS application files are related to Java Runtime Environment. The CLASS file is a Java Class Data. CLASS file contains bytecodes for the Java Virtual Machine. Java is a class-based, object-oriented programming language that is designed to have as few implementation dependencies as possible.

Java Runtime Environment
Application files
- / -
cla, clas, cls
Java Class Data related extensions:
Windows Command File
QlikView Sense App
SmartStart Array Configuration Script
U3 Package
Visual Basic Module
Windows Command File

Naturally, other applications may also use the .cla file extension. Even harmful programs can create .cla files. Be especially cautious with .cla files coming from an unknown source!

Can't open a .cla file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .cla file extension is often given incorrectly!

Based on searches conducted on our site in the past year, we have compiled a list of the most common misspellings. These frequent misspellings can cause confusion and hinder search accuracy. By providing this list, we aim to assist users in finding the correct information more easily and improving their overall search experience on our site.

These misspellings were the most common in the past year:

ca, cal, cia, cka, cl, clw, clx, clz, cma, coa, cpa, dla, fla, la, lca

Is it possible that the filename extension is misspelled?

There is a possibility that the .cla filename extension is misspelled. To assist users in identifying potential errors, we provide a list of similar file extensions in our database.

Filename extensions similar to .cla:

Autodesk 3D Studio Max Pose Adjustment Data
Crestron SIMPL Library Data
Netscape Navigator LiveAudio Data
HTML Calendar Maker Pro Calendar Data
Grade Organizer Project
Defense Department DLA Procurement Data

Operating systems

At, we strive to provide a seamless user experience by ensuring compatibility with a wide range of operating systems. The following is a comprehensive list of the operating systems currently supported by

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

If you find the information on this page useful, please feel free to link to this page.

If you have useful information about the .cla file format, then write to us! >> CLA file