JVM info: Oracle Corporation - 1.8.0_361 - 25.361-b09 java.net.preferIPv4Stack=true Found java version 1.8.0_361 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:204) at java.awt.Window.<init>(Window.java:536) at java.awt.Frame.<init>(Frame.java:420) at java.awt.Frame.<init>(Frame.java:385) at javax.swing.SwingUtilities$SharedOwnerFrame.<init>(SwingUtilities.java:1763) at javax.swing.SwingUtilities.getSharedOwnerFrame(SwingUtilities.java:1838) at javax.swing.JOptionPane.getRootFrame(JOptionPane.java:1696) at javax.swing.JOptionPane.showOptionDialog(JOptionPane.java:863) at javax.swing.JOptionPane.showMessageDialog(JOptionPane.java:666) at javax.swing.JOptionPane.showMessageDialog(JOptionPane.java:637) at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:177) at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:147)

这是一个 Java 程序运行时出现的异常，提示需要设置 X11 DISPLAY 变量，但是该变量未被设置。可能是因为程序需要在图形界面下运行，但是当前环境没有可用的图形界面。建议检查程序的运行环境和配置，或者尝试在有图形界面的环境下运行程序。