Set this property to True to display the Java console while the installer is running. Set this property to False to hide the console while the installer is running. If this value is set to false, the end user can trap the console output of the installer Java process by using the -is:log command line option with the launcher (which logs the output to a file). Or they could use the launcher command line option -is:javaconsole to override this property value and turn on the Java console.