Can't Get Mafia/Java to work together
- Thread starter ancient
- Start date
How are you installing mafia? Just dropping the jar into a directory?
How are you running it? Double clicking on the mafia jar file?
Is Java on the path in your environment?
Can you open a command line, type "java -version" and get something like
Do any Java jar files execute in your environment?
My guess is that your Java install is incomplete or bad but we might as well narrow down the possibilities.
How are you running it? Double clicking on the mafia jar file?
Is Java on the path in your environment?
Can you open a command line, type "java -version" and get something like
Do any Java jar files execute in your environment?
My guess is that your Java install is incomplete or bad but we might as well narrow down the possibilities.
philmasterplus
Active member
Some recent JDK installers don't add
If you don't want to reinstall the JDK/JRE, you can manually update the
java.exe to the PATH environment by default. You might have missed some checkbox that reads "Add Java to PATH" or "Set JAVA_HOME" when installing the JDK or the JRE.If you don't want to reinstall the JDK/JRE, you can manually update the
PATH and/or JAVA_HOME variable. Check the Set Environment Variables section of this guide for an idea of what you need to do.C:\Users\ancie>java -version
java version "16.0.1" 2021-04-20
Java(TM) SE Runtime Environment (build 16.0.1+9-24)
Java HotSpot(TM) 64-Bit Server VM (build 16.0.1+9-24, mixed mode, sharing)
followed the above and still not able to get anything from mafia when opening it other than an error saying no java.
java version "16.0.1" 2021-04-20
Java(TM) SE Runtime Environment (build 16.0.1+9-24)
Java HotSpot(TM) 64-Bit Server VM (build 16.0.1+9-24, mixed mode, sharing)
followed the above and still not able to get anything from mafia when opening it other than an error saying no java.
What happens when you switch to your KoLmafia folder and use
?
Code:
java -jar KoLmafia-[whatever].jarYes. it is possibly that the file association for jar is not set up or set up correctly.
File associations is the term that describes how Widows knows what program should open a type of file.
Right click on the jar file and then Open With. That should give you a way to select what to use to open the file and it should be Java. I can't grab a screenshot for you.
Right click on the jar file and then Open With. That should give you a way to select what to use to open the file and it should be Java. I can't grab a screenshot for you.
I'm going to try something maybe obvious... have you uninstalling and reinstalling Java?
philmasterplus
Active member
Some recent JDKs don't set the file associations at all. You could create a shortcut that runs the JAR file. It's a bit inconvenient, but we don't provide an EXE for recent builds. (IDK why)
I navigated to the directory with the Kolmafia jar, highlighted it to select it, used a right click and brought up the menu. Open at the top should be bold. If it isn't try and open the jar file and it should ask you to pick a program which should be java.
I thought they were broken, but I just tried the
jsmooth target and it worked.Go to https://github.com/kolmafia/kolmafia/releases, and try downloading one of the exes on that page (latest one as of writing is "KoLmafia-r26283-22.03.26283.exe"). You should be able to run that directly without fiddling with your Java install.
Tried that and getting a x error notice that says failed to launch JVM. second error after clicking ok on that one says Child process exited with code 1. Reviewed https://kolmafia.us/threads/yet-another-auto-updater-for-windows.26000/ also trying to troubleshoot. installed the advised versions and nada.
I don't have access the Github builds. But according to the actions log.
Java configuration:
Distribution: temurin
Version: 17.0.2+8
Path: C:\hostedtoolcache\windows\Java_Temurin-Hotspot_jdk\17.0.2-8\x64
Jenkins is still using Java 16 (last big update I did 17 wasn't in apt yet)
JVM: 16.0.1 (AdoptOpenJDK 16.0.1+9)