Future Perfect Tense denotes that an action will have been completed (finished or "perfected") at some point in the future. It also denotes actions which will start and complete at defined point of time in the future.
Examples:
- I will have finished this book
- You will have studied the English tenses
- She will have cooked dinner
- He will have arrived
- We will have met Julie
- It will have stopped raining
- They will have left Japan