Use a logging mechanism

[MartinLoeper]

Currently the log output is written to the console via System.out.
This is discouraged. We should use a proper logging mechanism.

Which one does KAMP use?

[MartinLoeper]

I suggest using the Eclipse Platform logging API: https://wiki.eclipse.org/FAQ_How_do_I_use_the_platform_logging_facility%3F

[MartinLoeper]

During development, you can browse and manipulate the platform log file using the PDE Error Log view (Window > Show View > Other > PDE Runtime > Error Log). You can also have the log file mirrored in the Java console by starting Eclipse with the -consoleLog command-line argument.

[MartinLoeper]

Please do also note that we have to change the way errors are show to the user according to: https://wiki.eclipse.org/Platform_UI_Error_Handling.

The old code ErrorDialog.openError(...); or MessageDialog.openError(...); should be refactored into StatusManager.getManager().handle(..., StatusManager.SHOW).