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Jarfix for Windows 7 - Fix Java Jar files easily. - Windows 7 Download

Jarfix Windows 7

Jarfix 2.0.0

Resolve Java association issues with this handy tool.

Introducing Jarfix - the ultimate solution to your JAR file association errors on Windows 7. Designed and developed by Johann Nepomuk Loefflmann, Jarfix is a lightweight yet powerful software that effortlessly fixes JAR file associations with your Java Runtime Environment. With just a single click, you can easily restore JAR file associations and get all your Java apps running smoothly on Windows 7. Say goodbye to frustrating JAR file errors and say hello to uninterrupted Java experiences with Jarfix!

Jarfix 2.0.0 full details

File Size: 41 kB
License: Freeware
Price: FREE
Released: 2012-03-15
Downloads: Total: 6956 | This Month: 6
Publisher: Johann Nepomuk Loefflmann
Publisher URL:

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JarfixOtherWindows 2000, Windows 2003, Windows XP, Windows Vista, Windows 7

User Rating: 3.0 (36 votes)

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Jarfix 2.0.0 full description

If you doubleclick on a jar file, and your Java application does not start, your .jar association has been hijacked. You can fix the problem with Jarfix.

The problem ...

The root cause for the problem above is, that a program has stolen the .jar association. If you have installed the Java Runtime Environment the first time, the file type called "jar" is assigned to javaw.exe correctly. "jar" is an abbreviation for "java archive" and javaw.exe is the correct program to execute a .jar.

However, on Windows any other program can steal a file type at any time even it is already associated with a program. Many archive managers prefer to do this, because a jar is stored in the .zip format.

If you doubleclick on a .jar, your pack program opens the file, rather than javaw runs the program, because your pack program ignores the meta information which is also stored in a .jar.

In the Sun bug database there is report 4912211 "add mechanism to restore hijacked .jar and .jnlp file extensions", but it has been closed as "Closed, will not be fixed".

The workaround ...

Reinstall the Java Runtime Environment or fix the Windows Registry manually each time this problem occurs.

The solution ...
You can fix this problem very easy with the jarfix.exe program. Just doubleclick on it to restore the .jar association with javaw.exe. It also sets a nice Java icon for your .jar files

Jarfix 2.0.0 download tags

Jarfix 2.0.0 Windows 7 release notes

New Release
· support for detecting a 64 bit Java Runtime Environment on 64 bit Windows
· option to search only for a 64 bit JRE if both 32 bit JRE and 64 bit JRE are
· installed
· option to fix the issue even without admin permissions
· option to read from a config file in order to fully control the action that happens if you double click on a jar file
· option to add the menu item called quot;Run as...quot; respectively quot;Run as administratorquot; to the context menu of the Windows Explorer in order to execute
· jar files under the administrator account
· option to set an alternative program icon for .jar files
[ Jarfix release history ]

Jarfix 2.0.0 Windows 7 requirements

· Java Runtime Environment

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Jarfix for Windows 7 - Copyright information

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