| File Type 1 |
Java Source File (Most common) |
| File Format |
File |
| Common? |
No |
| File Description |
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.
Java source files most often have a .JAVA extension. |
| Program(s) that open j files |
Mac / Windows: Sun Microsystems Java Virtual Machine; Edit with a text editor
Unix: Sun Microsystems Java Virtual Machine; javac; Edit with vi |
| File Type 2 |
JPEG Image |
| File Format |
Standard File |
| Common? |
No |
| File Description |
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.
Most JPEG files have a .JPG extension. |
| Program(s) that open j files |
Mac / Windows: Any picture viewer or Web browser |
| File Type 3 |
JAR Archive |
| File Format |
File |
| Common? |
No |
| File Description |
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.
Not related to the .JAR format, which is a Java Archive. |
| Program(s) that open j files |
Windows: ARJ Software JAR |
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