The command to add a Venn Diagram or a process chart on PowerPoint Online is to select the Insert tab, then select the SmartArt button, and there is the process charts listed under Process. But the Venn Diagram is listed under List.
Answer: actually idk this is a hard question when i figure it out ill let you know
Explanation:
so basically he will include the purpose of his email
I don't see any error on your code, everything is well written and simple. Except trying putting PUBLIC on your Class displayer. If you encounter the same problem again try to rebuild your whole code and try to recompile the whole code. Even try restarting your personal computer.