Details of extension .jj

On this page, we're going to take a closer look at the .jj file extension. We'll explain what exactly a .jj fileformat is and how you can use it. If you're interested in learning more details about this type of file, we'll show you where to find them. And if you ever need to convert .jj files into different formats, we'll give you some tips on how to do that too. Let's see the 2 file formats associated with this file extension!

Contents

• JavaCC Data
• C64 Doodle Compressed Image

We trust that our website will provide valuable information for you. If you have any questions, just ask!

JavaCC Data

The JJ file is a JavaCC Data. JavaCC (Java Compiler Compiler) is an open source parser generator and lexical analyzer generator for the Java programming language.

Category: Development files

Application: JavaCC

Program name: -

Mime-type: application/octet-stream

Magic bytes (HEX): -

Magic string (ASCII): -

Aliases:

-

Related extensions:

.jtb JavaCC Grammar File

Links:

JavaCC

C64 Doodle Compressed Image

The JJ file is a C64 Doodle Compressed Image. Doodle is a software package for the Commodore 64 computer that allows users to draw graphics.

Category: Graphic files

Application: XnView

Program name: -

Mime-type: application/octet-stream

Magic bytes (HEX): -

Magic string (ASCII): -

Aliases:

-

Related extensions:

.hil C64 Hires-Lace Image

.hir C64 Hires Bitmap Image

.sar C64 Saracen Paint Image

.vid Vidcom 64 Image

Links:

-

The .jj file extension might not only belong to a single type of file, there could be various kinds that use it. Keep in mind that files with the .jj extension may contain various content types. If you have helpful information about this extension, write to us!

The .jj extension is frequently misused

People sometimes confuse the .jj filename extension. Based on the searches on our site, here are the most common misspellings from the past year.

Having trouble opening a .jj file?

If you want to open a .jj file on your computer, you just need to have the appropriate program installed. Incorrect settings for the .jj association can trigger this error.

Windows can't open this file:

File: example.jj

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 from a list of programs that are installed on your computer.

To change file associations:

• Right-click a file with the extension whose association you want to change, and then click Open With.
• In the Open With dialog box, click the program whith which you want the file to open, or click Browse to locate the program that you want.
• Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2016/2019/2022, Windows 7, Windows 8, Windows 10, Windows 11, Linux, Mac OS X, macOS, iOS, Android