How do you handle a toddler throwing temper in public? Do you yell at him? How do you handle this situation?

No, don't yell especially in public. It's just not good... for example, how would you like it when someone yell at you in public with everyone else staring, it's disrespectful and bad example... a toddler is currently in a learning state, whatever you did to them such as yelling etc... they will take note and learned from there, possibly using that act in the future :( So, best to talk it out... tell him / her what to do and what not to do in public. I usually will talk in a soft loving tone and it works.