java.awt.HeadlessException: No X11 DISPLAY variable was set, but this program performed an operation which requires it. at java.awt.GraphicsEnvironment.checkHeadless(Graphic sEnvironment.java:159)

ittoolbox.com | 3 months ago
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    ittoolbox.com | 3 months ago
    java.awt.HeadlessException: No X11 DISPLAY variable was set, but this program performed an operation which requires it. at java.awt.GraphicsEnvironment.checkHeadless(Graphic sEnvironment.java:159)
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    java.awt.HeadlessException: No X11 DISPLAY variable was set, but this program performed an operation which requires it.

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    Root Cause Analysis

    1. java.awt.HeadlessException

      No X11 DISPLAY variable was set, but this program performed an operation which requires it. at java.awt.GraphicsEnvironment.checkHeadless(Graphic sEnvironment.java:159)

      at java.awt.Window.<init>()
    2. Java RT
      JFrame.<init>
      1. java.awt.Window.<init>(Window.java:318)
      2. java.awt.Frame.<init>(Frame.java:419)
      3. java.awt.Frame.<init>(Frame.java:384)
      4. javax.swing.JFrame.<init>(JFrame.java:150)
      4 frames