Question

This is my code:

public void viewFlight() {
  int select;
  String option;
  String newOrigin = null;
  viewFlightOrigin();
}

public void viewFlightOrigin() {
  option = console.nextLine();
  switch (select) {
    case 1:
      System.out.println("=======================================");
      System.out.println("city of origin: Melbourne");
      System.out.println("=======================================");
      newOrigin = "Melbourne";
      break;

    // ...
  }
}

How to use local variables in the viewFlight() to be used again in the viewFlightOrigin() without declaring the variables in the field or re-declaring again in the viewFlightOrigin()?

Answer 1

The easiest thing to do if you do not need to modify the variable would be to pass it down as a parameter to the function:

viewFlightOrigin(newOrigin);

public void viewFlightOrigin(String option) {
    // ...
}

If you need to modify the variable, you can return the new value from the method:

newOrigin = viewFlightOrigin(origin);

public String viewFlightOrigin(String option) {
    // ...
}