alphabetical list of extensions

File extension .JAR

File description

It is a packaging file format used to aggregate Java Class files and associated files into to distribute across the Java platform. They are archived files that are built on the ZIP file format with a JAR extension. Inside a JAR file, names, are Unicode text. A JAR file allows Java to deploy a set of classes and their associated resources. These elements can be compressed, giving them the ability to download the whole application in one request. To extract the contents of this file type, users can apply the standard unzip software.

Description of the problem

If you have on your computer a .JAR file that you cannot open, you are in exactly the same situation as thousands of other people who have similar problems with this or any other unknown file.

There may be several reasons why you cannot open the file with .JAR extension. Directly on this website you can find a solution of the most common problem with the .JAR file – that you do not have on your computer the appropriate program to open the file.

Solution

From the list below, select the appropriate program, install it and double click on the icon of a file that did not want to open - the problem with the .JAR file extension should be solved. However, if this does not happen, go back to the website to learn about other possible causes of the error, which have been described at the bottom of the website.

Category

Executable Files

Developer

Oracle

Popularity

File name: Java Archive File

Programs that will open this file:

Windows

7-zip

ALZip

Eclipse

IZArc

JAR/JAD to APK Online Converter

Java Runtime Environment

Web browser

WinRAR

WinZip

ZipZag

Mac OS

Java Runtime Environment

WinZip

WinZip Mac Edition

Linux

Java Runtime Environment

Web browser

Remember!

The .JAR file extension can correspond to several not related file formats. If there is more than one file format with the .JAR extension, you will probably find most of them at this website. Remember that you need to download a program to support a particular file type. So first look through the entire contents of the website to select a program to support just the file you have.

Other possible reasons why your .JAR file does not want to open

In addition to the problem described above, i.e. the lack of the appropriate application to support the .JAR file, there may be several reasons that cause problems with opening and operation of the data format:

1. Incorrect version of the installed application

A quite common problem is the lack of application in the appropriate version. Even if you have an application, with the help of which you should open the .JAR file, you may have a problem with it because of its version. Perhaps in previous versions the application has not yet supported the .JAR file, so download the update and check again.

2. Incorrect .JAR file association with the program

If you have already installed the appropriate application, and it is the correct version, the file may not open correctly, because the operating system does not have information that this program supports the file. So you need to "show" which program the computer should use. To do this:

Right-click the .JAR file
Go to the "Open with" - then "Choose default program ..."
Locate the appropriate application
Click "OK"

3. The file is corrupt

It also happens that the file you want to open is corrupt and therefore there is no such possibility. In this situation, you should find its different version, or ask a person from whom you got, to send it again.