Error "No X11 DISPLAY variable was set" while installing Foglight Management server (4368543)

Already installed the Pre requisite Java 1.6 .

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[root@unixcoelinux FoglightServer-5_5_4_1]# ./Foglight-5_5_4.1-install_linux-ia3
2.bin
Preparing to install...
Extracting the JRE from the installer archive...
Unpacking the JRE...
Extracting the installation resources from the installer archive...
Configuring the installer for this system's environment...

Launching installer...

Invocation of this Java Application has caused an InvocationTargetException. Thi
s application will now exit. (LAX)

Stack Trace:
java.awt.HeadlessException:
No X11 DISPLAY variable was set, but this program performed an operation which r
equires it.
        at java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:1
59)
        at java.awt.Window.(Window.java:431)
        at java.awt.Frame.(Frame.java:403)
        at java.awt.Frame.(Frame.java:368)
        at javax.swing.JFrame.(JFrame.java:163)
        at com.zerog.ia.installer.LifeCycleManager.g(DashoA8113)
        at com.zerog.ia.installer.LifeCycleManager.h(DashoA8113)
        at com.zerog.ia.installer.LifeCycleManager.a(DashoA8113)
        at com.zerog.ia.installer.Main.main(DashoA8113)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)