获取HeadlessException:未设置X11 DISPLAY变量

Question

    Exception in thread "main" java.awt.HeadlessException: No X11 DISPLAY variable was set, but this program performed an operation which requires it.

        at java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:159)
        at java.awt.Window.(Window.java:432)
        at java.awt.Frame.(Frame.java:403)
        at javax.swing.JFrame.(JFrame.java:202)
        at DrawGUI.(DrawGUI.java:15)
        at ShapeCreator.(ShapeCreator.java:31)
        at ShapeCreator.main(ShapeCreator.java:138)

这个错误信息是什么意思？我该如何解决？

Answer 1

我假设你正试图进入一些unix盒子.

确保在PuTTY设置中启用了X11转发.