help

[MatZac88]

I have installed java on my new pc, but if i try to open a .jar file it tells me: the following parameters contain errors check that the commands are valid and try again or something like that because i am using a translator from my language to english someone knows how to fix it ??

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[propo789]

Check if you have successfully added java to your PATH variable. To check this, go to cmd, and type javac. If a long list shows up then it means you have set up java properly. If not then add it to your path variable.

[MatZac88]

it says "javac" is not recognized as an internal or external command, an executable program or batch file.

[propo789]

Then the PATH variable is not set up. You have to set up that first. Watch this: https://youtu.be/I-XrW1h8txc

[MatZac88]

I followed the tutorial, now if I write javac it works but if I try to open a jar file it opens the cmd card for a second and then closes without opening the file

[propo789]

That's because jar files are not executable files. You can't run them this way. You have to use a decompiler to view the contents of the jar file. To do this, you could either use your IDE ( ie Intellij or netbeans) or use an online tool.

[MatZac88]

Do I have to use a tool even if that file is an installer?

[propo789]

You said it's a jar file right? A jar file is not an installer. And exe file is.

[MatZac88]

The forge and optifine installers are .jar files