Open J file

The most commonly used .j file type: Java source code

What is j file? Understanding and opening j files

j file icon Are you facing difficulties opening j files on your computer, or wondering exactly what j file is?
We've got the best software solutions for opening j files effortlessly.

.j file type #1: Java source code

Files with j file extension can be mainly found as Java source codes.

Further details

The j file extension is associated with the Java, a programming language and framework, available for various platforms and systems.

The j files contain source code written in Java language.

Open j file with:

Java Development Kit (JDK) icon

Java Development Kit (JDK)

A software used to develop Java applications and applets

.j file type #2: JAR archive

Files with jar file extension might also be found as compressed archives created using the JAR program. 

Further details

The j file extension is also related to Java and used by JAR compression software for its default archive format, developed by ARJ Software. Not to be confused with Java JAR.

Open j file with:

JAR

A PC file archiver

.j file type #3: JPEG/JFIF image

A j file extension can also be found as specially compressed JPEG files in JFIF standard. Use .jpg file extension instead.

Further details

The j file extension is also occasionally used for standard JPEG images., specially those in the JPEG File Interchange Format.

JFIF is an image file format standard. It is a format for exchanging JPEG encoded files compliant with the JPEG Interchange Format (JIF) standard. It solves some of JIF's limitations in regard to simple JPEG encoded file interchange. As with all JIF compliant files, image data in JFIF files is compressed using the techniques in the JPEG standard, hence JFIF is sometimes referred to as "JPEG/JFIF".

For more information see: jpg file extension record in our database.

Open j file with:

XnView MP icon

XnView MP

A popular utility for viewing and converting graphic files

What file extension actually is?

Simply put, file extensions are the characters after the dot in the computer file name, so for example document-name.pdf has file extension „pdf“. This helps Windows to identify which program should be used to open the file.

We can help you to open your file

Our database contains a huge list of different file extensions, usually with detailed description and programs that can be used to open or otherwise work with that particular file type.

Only original software

Every software listed in our database is verified and ve provide link to the developer or to the software own website, which should hopefuly be enough for you to download the most recent version of the program.