CODEWITHSUNDEEP
jarjavaubuntu
Mohammad
Mohammad

Reputation: 1554

I Cannot run jar file in kubuntu terminal

I thinks it is some problems in my java installation but i don't know what is the problem and how can i fix it

I can run jar file with openjdk in visual mode but in terminal i cannot run jar files for example you can see this below

root@mohammad-Inspiron-1564:/media/storage/Linux/Freedom# java -jar freedom.jar 
No protocol specified
No protocol specified
Exception in thread "main" java.lang.InternalError: Can't connect to X11 window server using ':0' as the value of the DISPLAY variable.
        at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
        at sun.awt.X11GraphicsEnvironment.access$200(X11GraphicsEnvironment.java:65)
        at sun.awt.X11GraphicsEnvironment$1.run(X11GraphicsEnvironment.java:110)
        at java.security.AccessController.doPrivileged(Native Method)
        at sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java:74)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:186)
        at java.awt.GraphicsEnvironment.createGE(GraphicsEnvironment.java:102)
        at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:81)
        at java.awt.Window.initGC(Window.java:466)
        at java.awt.Window.init(Window.java:486)
        at java.awt.Window.<init>(Window.java:535)
        at java.awt.Frame.<init>(Frame.java:420)
        at javax.swing.JFrame.<init>(JFrame.java:218)
        at de.resolution.emsgui.LanguageSelector.showButtonGrid(LanguageSelector.java:27)
        at de.resolution.emsgui.LanguageSelector.<init>(LanguageSelector.java:19)
        at emsgui.main(emsgui.java:46)

perhaps i should re-install mu kubuntu :((

thnx Mohammad

Upvotes: 2

Views: 1723

Answers (1)

Code-Apprentice
Code-Apprentice

Reputation: 83597

The error message tells you that it cannot connect to the X11 window server. The program in the JAR file uses Swing and needs some way to display the GUI it creates. If you have X11 installed, you can start it from the command-line by typing startx. Otherwise you need to install it or some other system that will allow you to run a Swing-based program.

Upvotes: 3

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