CLS files: what are they and how do I open them?
Are you facing difficulties opening unknown files on your computer, or wondering exactly what this file is?
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.cls file type #1: JavaScript class definition
Files with cls extension are generally related to class definition files mainly used in JavaScript.
Further details:
File extension cls is related to JavaScript, a scripting language most often used for client-side web development. It was the originating dialect of the ECMAScript standard.
It is a dynamic, weakly typed, prototype-based language with first-class functions. JavaScript was influenced by many languages and was designed to look like Java, but be easier for non-programmers to work with.
A .cls file contains JavaScript class definitions.
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Sublime Text
A sophisticated source code editor for programmers
.cls file type #2: AIM AOL Instant Messenger data
A cls file extension is related to the AIM AOL Instant Messenger data format.
Further details:
The cls file extension is associated with the AIM AOL Instant Messenger, a communication program available for various platforms
The cls file contains some kind of data. It is in SQLite 3 format.
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AOL Instant Messenger (AIM)
An instant messaging and presence computer program
.cls file type #3: ArcView geocoding classification
A cls file extension is related to the ArcView, a GIS software from ESRI. A cls file stores geocoding classification.
Further details:
Geocoding is the process of assigning a location, usually in the form of coordinate values, to an address by comparing the descriptive location elements in the address to those present in the reference material.
ArcView's geocoding engine uses US Postal Service street abbreviation conventions. These conventions are controlled through classification files that standardize address component abbreviations.
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ArcGIS for Desktop Basic (ArcView)
A GIS application used to work with geographic data
.cls file type #4: Java class definition
A cls file extension is related to the Java programming language and run-time environment. A cls file stores class definition.
Further details:
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.
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Java Development Kit (JDK)
A software used to develop Java applications and applets
Java
Software set used to develop and run applications written in Java source code
.cls file type #5: LaTeX data
A cls file extension is related to the LaTex a document preparation system.
Further details:
The cls file extension is used by LaTex a document preparation system for high-quality typesetting.
It is most often used for medium-to-large technical or scientific documents but it can be used for almost any form of publishing.
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LaTeX
A document preparation system for high-quality typesetting
.cls file type #6: Microsoft Visual Basic 4 class module add-in
A cls file extension is related to the Microsoft Visual Basic, an IDE for Windows. A cls file contains class module add-in.
Further details:
The cls file extension is associated with the Microsoft Visual Basic, an integrated development tool for Microsoft Windows operating system.
The cls file stores class module add-in for Visual Basic.
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Microsoft Visual Basic
A programming language and integrated development environment for Microsoft Windows
.cls file type #7: Microsoft Visual C++ class definition
Files with cls file extension are related to the Microsoft Visual C++ class definition files.
Further details:
The cls file extension is used by Visual C++ and Visual Basic an integrated development environments from Microsoft that allows users to create programs for Microsoft Windows.
A cls file stores class definition used by Visual C++ and Visual Basic.
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Visual C++
IDE for C and C++ programming language
Microsoft Visual Studio
IDE for creating programs, or websites and web applications
.cls file type #8: SQLite 3 data format
A cls file extension is associated with the SQLite, a relational database management system. A cls file contains data.
Further details:
The cls file extension is related to the SQLite, a relational database format.
The format used by SQLite database files has been completely revised. The old version 2.1 format and the new 3.0 format are incompatible with one another.
The new database file format uses B+trees for tables. In a B+tree, all data is stored in the leaves of the tree instead of in both the leaves and the intermediate branch nodes. The use of B+trees for tables allows for better scalability and the storage of larger data fields without the use of overflow pages. Traditional B-trees are still used for indices.
The new file format also supports variable pages sizes between 512 and 32768 bytes. The size of a page is stored in the file header so the same library can read databases with different pages sizes, in theory, though this feature has not yet been implemented in practice.
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SQLite
A software library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine
SQLite for Mac
Transactional SQL database engine for Apple Mac computers
SQLite for Linux
A database engine in version for Linux