How to call different methods in switch case

Answer 1

switch(var){
case 0:
callFirstMethod();
break;
case 1:
callSecondMethod();
break;
...
}

Answer 2

I want to call different methods in main method using switch case

Answer 3

That's what I've done.
Share your code here if you want it to be more precise :)

Answer 4

I have to create calculator using this