36 votes
J File - What is a .j file and how do I open it?
Learn about .J files and view a list of programs that open them.
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Overview
What is a J file? Contains program source code written in the Java programming language; may include the source code for a complete program or may be one of many files referenced by a Java programming project.
More Information Java source files most often have a .JAVA extension.
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DeveloperN/A
Popularity2.6 | 7 Votes
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In-Depth
.J File Extension
3 file types use the .j file extension.
Java Source File
| Developer | Oracle |
| Popularity |
3.1 | 36 Votes |
What is a J file?
Contains program source code written in the Java programming language; may include the source code for a complete program or may be one of many files referenced by a Java programming project.
More Information
Java source files most often have a .JAVA extension.
Open over 400 file formats with File Viewer Plus . Free Download
Programs that open or reference J files
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Windows
Oracle Java Virtual Machine
Free
Eclipse IDE for Java Developers
Free
gVim
Free
Mac
Oracle Java Virtual Machine
Free
Eclipse IDE for Java Developers
Free
Linux
Oracle Java Virtual Machine
Free
Eclipse IDE for Java Developers
Free
javac
Free
vim
Free
Category: Developer Files
Updated: August 17, 2010
JAR Archive
| Developer | N/A |
| Popularity |
3.4 | 7 Votes |
Compressed file archive created with JAR, the successor to the ARJ file compression program (which created .ARJ files); JAR is available in a 16-bit DOS version and a 32-bit Windows version.
More Information
Not related to the .JAR format, which is a Java Archive.
Programs that open J files
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Windows
ARJ Software JAR
Category: Compressed Files
Updated: December 14, 2006
JPEG Image
| Developer | N/A |
| Popularity |
2.6 | 7 Votes |
Compressed graphic that uses .JPEG image compression; may contain thousands of colors, which makes it a good format for storing digital photos; can use different levels of compression, but the more compression is used, the lower the quality of the resulting image.
More Information
Most JPEG files have a .JPG extension.
Programs that open J files
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Any picture viewer
Any Web browser
Mac
Any picture viewer
Any Web browser
Category: Raster Image Files
Updated: February 15, 2007