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This is the message error from the terminal :

coca@Bakorng:/var/www/shared$ sh 
Configuring the installer...
Searching for JVM on the system...
Extracting installation data...
Running the installer wizard...
Can`t initialize UI
Running in headless mode

Exception: java.awt.HeadlessException thrown from the UncaughtExceptionHandler in     thread "main"

How do I fix this?

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For some reason the sh installer does not work with the openJDK 7. Quick fix to install is to change back to JDK 6. run:

sudo update-alternatives --config java
(select java 6) 

the installer should run and then just switch back to the java 7 JDK with update-alternatives.

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Your report is similar to this one which suggests simply uninstalling OpenJDK 6 and using the latest version of OpenJDK 7 instead.

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