extension .jar

[torinese24]

hello all
I'm new, sorry if I do not speak well, but I'm using the google translator,
on the Italian forum mageia 2, almost no one there, so instead here is my problem:

I would like to start a (small) game with the extension. jar
I do not know how to start, I do not know if you have to extract it or start it? how can I do?

I issue the commands to do and the instructions
thanks
hello

[isadora]

Hi and welcome to the Mageia-forum torinese24!!!!

Your topic has been moved to the "Basic support"-forum.

[torinese24]

hello, thanks
could you help me?

[isadora]

Well i guess you need to have Java installed.

Can you give the output in console of:

Code: Select all

rpm -qa | grep java

[torinese24]

and after I do this command
What should I do?
Java already installed

[isadora]

You should be able to execute those .jar-files with

Code: Select all

java -jar your.jar

where your is of course the name of the .jar-file you want to run.

[torinese24]

me an error
I said:

Unable to access jarfile minecraft.jar

"minecraft.jar" is the game

[isadora]

Al-right torinese24, i am out of options, sorry.
You have to wait until more advanced knowledge is around.

[alf]

You should maybe give the fully qualified path to the jar file in the java-command.

[doktor5000]

And please copy&paste the command used and the output this produces, also from which path you executed it from.

[torinese24]

minecraft.jar = game
procedure:
java-jar minecraft.jar

Error: Error: Unable to access jarfile minecraft.jar

the game (minecraft.jar) is located on the desktop (do not know how to say in linux, but is found in the desk

[tom_]

ciao,
go to mageiaonline if you prefer use italian


minecraft.jar works fine here

tom@localhost Desktop]$ java -jar minecraft.jar
asdf
(then a windows pop up)

these are the installed java packages on my machine:
(Isadora asked you this list to see what you have on your machine)

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tom@localhost Desktop]$ rpm -qa | grep java
java-1.6.0-openjdk-devel-1.6.0.0-33.b24.1.mga2
lib64javascriptcoregtk3.0_0-1.8.1-1.mga2
java-access-bridge-1.26.2-4.mga2
timezone-java-2012c-1.mga2
java-1.6.0-sun-fonts-1.6.0.26-0.2.mga1.nonfree
java-1.6.0-sun-plugin-1.6.0.26-0.2.mga1.nonfree
java-1.6.0-openjdk-1.6.0.0-33.b24.1.mga2
java-rpmbuild-1.7.5-17.3.mga2
java-1.6.0-sun-jdbc-1.6.0.26-0.2.mga1.nonfree
rootcerts-java-20120628.00-1.mga2
java-1.6.0-sun-1.6.0.26-0.2.mga1.nonfree
java-1.6.0-sun-alsa-1.6.0.26-0.2.mga1.nonfree
libreoffice-java-common-3.5.5.3-0.3.mga2
lib64javascriptcoregtk1.0_0-1.8.1-1.mga2

[torinese24]

I like using the terminal, put the path where the file open?

[tom_]

open the terminal, then type these commands:

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cd
cd Desktop (maybe you have Scrivania)
java -jar minecraft.jar


[alf]

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java -jar ./minecraft.jar

would be better

[torinese24]

open the terminal, then type these commands:

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cd
cd Desktop (maybe you have Scrivania)
java -jar minecraft.jar


after I did the command you say, what do I do?
by this written:

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[leader@localhost Scrivania]$ java -jar minecraft.jar
Exception in thread "main" java.lang.NoClassDefFoundError: org/lwjgl/LWJGLException
        at java.lang.Class.getDeclaredMethods0(Native Method)
        at java.lang.Class.privateGetDeclaredMethods(Class.java:2442)
        at java.lang.Class.getMethod0(Class.java:2685)
        at java.lang.Class.getMethod(Class.java:1620)
        at sun.launcher.LauncherHelper.getMainMethod(LauncherHelper.java:492)
        at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:484)
Caused by: java.lang.ClassNotFoundException: org.lwjgl.LWJGLException
        at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
        ... 6 more
[leader@localhost Scrivania]$

~edited by moderator, command-output placed between [code]-tags.

[tom_]

this means it started, but there are some problems in it.

As it works on my PC,
so you should check if you have my same Java packages