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Thanks Greg, it did decrease the amount of code (i wrote this constructor because our book instructed us to do so the x, y, r and antal can't be negative, however in this case i think you're right)...

This might seem strange, but that's kind of the problem :P I'm new to this so please bear with me.
I'm programming in school using Netbeans and we've just started with graphical programming (i.e...