.JAR File Type
File extension: JAR or .jar
Description: Java Archive
Author of the .jar file extension: Sun Microsystems and ARJ Software
Category: Archive files
Programs that use the .jar file type: Java
Explanation of .jar file extensions:
The .jar file extension stands for Java Archive. Java Archive Files are archives that contain multiple compressed Java files using .ZIP compression. These files store Java classes and metadata as well as run programs when Java Runtime Environment is installed on a computer.
Another .jar file extension is from ARJ Software which is a type of compression utility.
Typical problems associated with the .jar file extension:
Opening .jar files can be tricky if you do not have the appropriate program installed on your computer. It’s also possible that you could have a registry-related error.
JAR files need either a web browser with built-in Java support or the Java Runtime Environment 1.1 or above installed on the computer in order to open properly.
For ARJ’s .jar files, you must have the JAR utility.
Solutions/Recommendations:
Make sure that you have the latest related software installed on your computer and double check to see if your web browser supports Java. Updating to the latest version should ensure that you have the necessary support as most modern web browsers can handle this file extension.
Missing .jar file associations and .jar file corruption can be traced to the Windows registry. Use a registry scan to rule out possible .jar problems that originate in the Windows registry.
If you want to reset the .jar file association, go into Windows Explorer and right-click the .jar file. Click on “Open With” and then select “Choose Default Program.” Now, Windows will show you a list of recommended programs. Find the program and click it. If you want to always open your .jar files with this program, check the box that says, “Always use the selected program to open this kind of file.”
Associated links:
SunMicroSystems
http://www.arjsoftware.com/
fileextensiontype.com