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Browse by file type:
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.J File Extension3 File Associations
TIP: Run a free scan for .J file extension errors.
| File Type 1 |
Java Source File (Most common) |
| Popularity |
 Average |
| Category |
Developer Files |
| 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 |
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Mac OS |
 Sun Microsystems Java Virtual Machine
Edit with a text editor
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Windows |
Sun Microsystems Java Virtual Machine
Edit with a text editor
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Linux |
Sun Microsystems Java Virtual Machine
javac
Edit with vi |
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| Sponsored Links |
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| Updated 4/14/2009 |
 Fix file extension .J errors. |
| File Type 2 |
JPEG Image |
| Popularity |
Average |
| Category |
Raster Image Files |
| 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 |
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Linux |
Sun Microsystems Java Virtual Machine
javac
Edit with vi |
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| Sponsored Links |
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| Updated 2/15/2007 |
Fix file extension .J errors. |
| File Type 3 |
JAR Archive |
| Popularity |
Average |
| Category |
Compressed Files |
| 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 |
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Windows |
ARJ Software JAR |
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| Updated 12/14/2006 |
Fix file extension .J errors. |
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