How to create an output folder in eclipse

Question

I imported an eclipse plugin with Maven nature in eclipse and after a clean on all subprojects the first warning that I saw was source.bin build entry is missing(because it was written in build.properties but missing from hard drive). I tried to create it manually ( right-click->new->folder), but then I get another warning: bin/ is not an output folder.
How can I create a valid output folder?

Answer 1

Select project and press alt + enter then select build path (or right click to project and build path->configure). In source tab you can see output folder. You can press edit and select another folder.