Cannot open .jar files with java installed (windows 11)

Question

Environment: Windows 11 Problem: cannot open.jar file(the MARS assembly language simulator)

Hello, I am currently trying to install the MARS assembly language simulator. It is a.jar file so I downloaded java to open it. However, I still can't open the file even with java downloaded. I checked if java was installed using my cmd: Command prompt showing java successfully installed

I tried double-clicking it did not work. So I right-clicked it to open with other apps. But I did not see java in the given options. Cannot find the java option to open the file

Thank you so much for helping!

Answer 1

Use your prompt CD into the directory with the jar then execute java -jar Mars.jar...any more troubles, open file properties tab with right click on the jar and check permissions to execute the file.

Answer 2

Installing Java usually means installing a JVM, which is a Java Virtual Machine . You won't be able to launch files from a Windows context menu like this, because "Java" is not a program that opens files.

Instead you need to:

• Either a terminal and call javaw.exe with the parameters -jar and your .jar -file. Eg:

C:\your\java\binaries\javaw.exe -jar -SomeJarFile.jar

• Or add the Java installation to your environment variables, then you can call javaw.exe without providing some specific path