Opening J files

Did your computer fail to open a J file? We explain what J files are and recommend software that we know can open or convert your J files.

What is a J file?

Files that contain the .j file extension are most commonly used by the Java programming language. The J files that are used by this language contain the source code that has been written in Java. These files may contain the code for an entire software application or may consist of a single file that is referenced by another Java programming project.

The J files that are associated with JAVA are usually saved with the .java file extension, but the .j file extension can be used in lieu of the standard .java suffix.

The .j file extension is also used for the archive files that are created with the JAR archiving software.

Try a universal file viewer

In addition to the products listed above, I would suggest that you try a universal file viewer like Free File Viewer. It can open over 200 different types of files - and very likely yours too! Download Free File Viewer.

By Prof. Jones (The File Expert)

Chief Content Editor and File Expert

Suggestions for this page? Mail me.