Windows 10: Set my default app to open with for .jar files to Notepad.

As the subject says, I set the app that .jar files open with to Notepad. Now, whenever I try to run the files, I get the error "'java' is not recognized as an internal or external command, operable program or batch file." I fiddled around with it for a while, but I was unable to find a way to set the default back to nothing. Could anyone help me with this? I am running Windows 10.

:)

 

.jar files opening in internet explorer

I have the same problem, I accidentaly switched a .jar file to open with internet explorer, or notepad, I can't remember, and I forgot to unselect set it to the default, and now I can't get back to the java thing, please help.

 

.jar file opening with notepad

Hey, i have a problem with opening my .jar files.

i wanna open my .jar files with java but it opens with notepad. how can i fix this?

 

.jar files open and close immediately

Hello RYAN71098,

1. Reinstall or update Java Runtime Environment

If you can’t run jar files on your Windows 10 PC, you might need to reinstall Java Runtime Environment. To do that, follow these steps:

Press Windows Key + I to open the Settings app.

When the Settings app opens, go to the System section. Now, choose Apps & features from the left pane.

Locate Java from the list and choose the Uninstall option.

After doing that, navigate to Java’s website and download the latest version of the software. Once installed, check if the problem is resolved.

Java will also automatically check for updates, and if updates are available you’ll get a notification. To update Java, simply click the notification and choose the Update option. Now follow the instructions to complete the update.

2. Set file association

Jar files can’t run on your PC if you don’t have the proper associations. For example, jar files can be associated to run with other applications or they could lack file association completely.

If the situation is the latter one, you won’t be able to run jar files on your PC. However, you can easily fix this problem by changing the file association for jar files. To do that, follow these steps:

Open the Settings app. Navigate to the System > Default apps.

Scroll all the way down and select Choose default apps by file type.

Locate the .jar file type and choose a default application.

3. Create a .bat file

According to users, you can run jar files on Windows 10 by using this simple workaround. This solution requires you to create a .bat file and use it every time you want to run a specific jar file. The process is rather simple and you can do it by following
these steps:

Locate your jar file. In the same folder, create a new Notepad file. To do that, right-click empty space in the directory and choose New > Text Document.

When Notepad opens, enter java -jar filename.jar. Be sure to replace filename.jar with the actual name of the file.

Navigate to the File > Save as.

Set Save as type to All files. Now, enter the desired name for the file. Keep in mind that you need to have .bat as an extension or else the solution won’t work. Save the file in the same location where your jar file is located.

After doing that, locate your .bat file and double-click it. Your jar file will now open. Keep in mind that you need to repeat this process for every jar file that you want to run on your PC. In addition, be sure to save the .bat file in the same location as
your jar file.

Hope it helps, have a good day