Redo the method instruction

Question

I would like to know how I do to redo the instruction of a method until the user cancels.

I have the following method, for example:

public static void method(){
  int i = 1;
  i += 1;
  String choise;

  println("Exit?");
  choise = scan.next();

  if(choise.equals("y")){
    System.Exit(0);
  } else if(choise.equals("n")){
    /* ???? */
  } else{
    ...
  }
}

I imagine I could use a loop, while for example, and run the instruction until Choise is "n". But I would like to know if it was possible to do it differently without using a loop.

Answer 1

We can solve the same problem iterativa (used a repeat loop) or through chamadas recursivas a uma função.

To recursividade is the definition of a sub-rotina (função or método) that can invoke itself.

Knowing that we have more than one possible solution we should always seek the best for each situation when using recursion or loops, in your case the ideal solution is through a laço de repetição:

while (choise.equals("y")){

    println("Exit?");
    choise = scan.next();

    if(choise.equals("y")){
        System.Exit(0);
    } else if(choise.equals("n")){
        /* ... */
    } else {
        /* ... */
    }

}

Answer 2

Try this:

while (choise.equals("y")){
    println("Exit?");
    choise = scan.next();

    if(choise.equals("y")){
        System.Exit(0);
    } else if(choise.equals("n")){
        /* ???? */
    } else{
        ...
    }
}

Or you can use another recursive method, which calls itself if it’s not Y.

Answer 3

It doesn’t just use reference

else if(choise.equals("n")){
      method();
    } else{