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Can't connect to X11 window server using ':0.0' as the value of the DISPLAY variable.
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Can't connect to X11 window server using ':0.0' as the value of the DISPLAY variable.
java.lang.InternalError: Can't connect to X11 window server using ':0.0' as the value of the DISPLAY variable.	at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)	at sun.awt.X11GraphicsEnvironment.(X11GraphicsEnvironment.java:59)	at java.lang.Class.forName0(Native Method)	at java.lang.Class.forName(Class.java:120)	at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:58)	at java.awt.Window.(Window.java:188)	at java.awt.Frame.(Frame.java:315)	at java.awt.Frame.(Frame.java:294)	at javax.swing.JFrame.(JFrame.java:172)	at HelloWorldSwing.main(HelloWorldSwing.java:5)