Occasionally, yous find applications or games distributed equally .jar files instead of the usual .exe file. You lot tin't only double-click on a JAR file to run the app. How, then, do y'all open a JAR file?

Java used to be a popular coding language to create freeware games and applications. Even at present, many freeware apps are distributed as .jar files, which Windows does not natively support. This commodity will walk you through ways to open JAR files on your estimator.

What Is a JAR File?

Internet browsers used Java to offer a dynamic browsing feel. Games and other interactive applets were coded using Coffee and could run on any platform.

But there was a small problem. It took multiple HTTP requests to download all the avails required for that applet to work, slowing down its load time. A amend arroyo would be to parcel all the files into a unmarried file that Coffee could access to run an application.

And that'due south exactly what the JAR file is. Inspired by WinZip, JAR is a file archive used past Java to hold anything from multimedia files to code and is attainable to Java applets.

Install Java on Your PC

The almost straightforward method to open up a JAR file is to install the Java Runtime Environment (JRE) on your figurer. Not just does this give you the ability to open .jar files, but it also makes your arrangement capable of running Java apps.

  1. Download the latest JRE version, caput to Oracle's official download page.
  1. Whorl downwards to find the correct installation package for your operating organization. There are both online and offline installers. The online setup will only download the necessary files during the installation while the offline version downloads all necessary files first and and then will start the installation.
  1. Run the downloaded file to begin the installation of JRE on your reckoner. Accept the license understanding to get the setup underway. Usually, the installer will automatically remove older versions of JRE, though you can do that manually if needed.
  1. A completed installation allows yous to run any Java app on your PC, including JAR files.

Note that this only allows your computer to open JAR files using the method mentioned below, but it doesn't acquaintance the .jar extension, which means that if y'all attempt to double-click a JAR file, Windows still wouldn't know what to do with the file.

Check the following section to learn how to open up a JAR file once JRE has been installed.

Open From Command Prompt

To be articulate, this isn't a different method at all. You yet demand to take Coffee installed on your computer to open JAR files from the command prompt, so that step comes starting time.

One time y'all've installed Coffee on your estimator using the procedure in the last section, you tin then use the command prompt to open up JAR files.

  1. Open Control Prompt as an administrator. Type cmd in the search bar to locate the application.
  1. Enter the command java -jar C:pathtofile.jar , where "pathtofile" is the path of the file in question. You can copy the file to the C bulldoze itself to brand it easier, allowing you to enter just the file name.
  1. Upon execution of the command, Windows will utilise the JRE to translate the JAR file. You lot should now see the Java awarding running.

Unless the application you desire is distributed every bit an executable Java file, yous'll need to execute all these steps each time you run a JAR file.

Extract every bit an Archive

JAR files are archived data with a fancy proper noun. Sure they're meant for Java applications, just a .jar file only compresses and archives them into a unmarried package, thereby letting you extract JAR files using any leading file extraction tool like WinRAR or 7-Zero. This volition let yous meet the contents of the bundle, though you lot'll withal need the JRE if you lot want to run the application itself.

  1. Download the seven-Zip installer to extract .jar files.
  1. Run the downloaded .exe file to install 7-Zip on your computer.
  1. Navigate to the directory containing the JAR file you wish to extract.
  1. Correct-click on the file, select vii-Zilch, and then select Extract All.
  1. The JAR file will be extracted into the directory.

What is the All-time Method To Open a JAR File on Windows 10?

JAR files are usually Java applications packaged into a single file. To run them, you need to take the Coffee Runtime Surround installed on your PC. As JRE is gratis to download, this is the easiest fashion to go .jar files working on your Windows computer.

On the other mitt, if you simply want to look at the contents of the JAR archive but non really run information technology, yous can always use a file extraction tool. Apps similar 7-Zip or WinRAR can easily extract the contents of a .jar file.