Not able to install sikuli in linux system

HI,
i am trying to install sikuli-setup.jar (md5) in linux
i have given the command :----- java-jar sikuli-setup.jar.
But it is giving me the following error :

[debug] SikuliX Setup Build: 1.0.1 20AUG2013135320
[debug] ... starting with no args given
[debug] user home: /home/artsi
Exception in thread "main" java.awt.HeadlessException
 at java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:173)
 at java.awt.Window.<init>(Window.java:546)
 at java.awt.Frame.<init>(Frame.java:419)
 at java.awt.Frame.<init>(Frame.java:384)
 at javax.swing.SwingUtilities$SharedOwnerFrame.<init>(SwingUtilities.java:1754)
 at javax.swing.SwingUtilities.getSharedOwnerFrame(SwingUtilities.java:1831)
 at javax.swing.JOptionPane.getRootFrame(JOptionPane.java:1692)
 at javax.swing.JOptionPane.showOptionDialog(JOptionPane.java:864)
 at javax.swing.JOptionPane.showMessageDialog(JOptionPane.java:668)
 at javax.swing.JOptionPane.showMessageDialog(JOptionPane.java:639)
 at org.sikuli.basics.RunSetup.popInfo(RunSetup.java:921)
 at org.sikuli.basics.RunSetup.main(RunSetup.java:376)