No protocol specified
Exception in thread "main" java.awt.AWTError: Can't connect to X11 window server using ':1.0' as the value of the DISPLAY variable.
at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
at sun.awt.X11GraphicsEnvironment.access$200(X11GraphicsEnvironment.java:66)
at sun.awt.X11GraphicsEnvironment$1.run(X11GraphicsEnvironment.java:187)
at java.security.AccessController.doPrivileged(Native Method)
at sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java:146)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:260)
at java.awt.GraphicsEnvironment.createGE(GraphicsEnvironment.java:102)
at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:81)
at sun.awt.X11.XToolkit.<clinit>(XToolkit.java:123)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:260)
at java.awt.Toolkit$2.run(Toolkit.java:860)
at java.awt.Toolkit$2.run(Toolkit.java:855)
at java.security.AccessController.doPrivileged(Native Method)
at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:854)
at javax.swing.UIManager.getSystemLookAndFeelClassName(UIManager.java:611)
at hgdbmonitor.view.MonitorView.main(MonitorView.java:2147) 

报错原因见上边，主要语音原因是Linux系统没有图形化界面，为了使用图形化界面 将前端和后端展示而设置引入图形化界面的。

在以上报错的信息中，主要是没有权限。

在root用户下执行#:xhost +
然后切换成oracle用户:su - oracle
在执行：./run````试下，这样一般是可以把图形化界面调处来了