.Metadata File Not Finding On Mac. Could you please help me with that?

It is in your Eclipse workspace directory and is a hidden folder. Google how to show hidden files for mac yosmite. You have to enter command in terminal. Something like "defaults write com.apple.finder AppleShowAllFiles yes" or something like that. You will have to google the exact command. Then all your hidden files and folders will show in finder. Hidden folders start with a dot such as .metadata