I tried to execute a java swing program in ubuntu 16.04, it is working fine with the default user, but when i change the user it is not working and showing the following error.
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Exception in thread "main" java.awt.AWTError: 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:115)
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:264)
at java.awt.GraphicsEnvironment.createGE(GraphicsEnvironment.java:103)
at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:82)
at java.awt.Window.initGC(Window.java:475)
at java.awt.Window.init(Window.java:495)
at java.awt.Window.<init>(Window.java:537)
at java.awt.Frame.<init>(Frame.java:420)
at java.awt.Frame.<init>(Frame.java:385)
at javax.swing.JFrame.<init>(JFrame.java:189)
at ImageButton.<init>(ImageButton.java:6)
at ImageButton.main(ImageButton.java:23)
can any one help me with this please.
if the user of java awt process is not you(who login into a desktop), it may not pass the xauth. try to share your .Xauthority to that user by:
export XAUTHORITY=/home/<you>/.Xauthority
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