Every Java Program Giving Output of "B"

Every Java program I run in eclipse, no matter how different, gives a console output of an uppercase "B". Does anyone know what is causing this?

UPDATE: Fixed the issue, turns out eclipse was using the previous programs run configurations instead of creating a new one for each program, so the console was just giving an output of a开发者_StackOverflow中文版nother program I had ran earlier

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I would expect that you have set up that "invoke the same thing as last time", but if not, then your Eclipse installation is most likely so broken that you should just unpack it again and create a new workspace.