Windows 10: I can't uninstall an old Java file. I was trying to download a new version of Java but it...

does anybody know how to fix this. I can't delete it.

:)

 

Java .jar file is not downloaded as a java file.

"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. Keep in mind that it’s not mandatory that you remove your previous Java installation, so you can skip that step and
just install the latest version on top.

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"

More details here:

https://windowsreport.com/jar-files-not-opening...

Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised
on the site before you decide to download and install it.

 

Latest version of Java

CCleaner only removes temporary files, cached files and so. But it does not delete program files. Same for the clean up option in the Java options.

In fact, the uninstaller has only removed itself, but not the Java program: The entry for the 60 update no longer was in the list of installed programmes inside the control panel. But the program files in C:\Program Files (x86)\Java\jre1.8.0_60\ all were still there.