java - 从某个点记忆一个方法

Question

我想在满足条件 (else) 时从某个点重新运行此方法，我知道我需要为其创建一个新的类/方法，但不确定如何创建，因为我的所有变量都保留在 main 方法中。

import java.util.*;

public class OddsAndEvens {

    public static void main(String[] args) {

        Scanner input = new Scanner(System.in);

        System.out.println("Let's play a game called Odds And Evens");

        System.out.println();

        System.out.println("What is your name? ");

        //user name
        String name = input.nextLine();

        System.out.println("Hi " + name + "Which do you choose? Odds or Evens ?");

        //user preference this is where I want to rerun the method from in else condition
        String pref = input.nextLine();


        if (pref.equals("Odds") || pref.equals("odds")) {

            System.out.println(name + " has picked odds ! Computer will be evens");

        } else if(pref.equals("Evens") || pref.equals("evens")) {
            System.out.println(name + " has picked evens! Computer will be odds");
        } else {
            System.out.println("please enter a valid answer");

        }
    }
}

Answer 1

有很多方法可以做到这一点，一种方法是按照 Valentin 所说的那样做，只创建一个您可以记忆起来的方法。您也可以只使用一个 while 循环，它不断询问“赔率”或“赔率”，直到用户输入两者之一。类似的东西:

    String pref = "";

    while(!pref.equalsIgnoreCase("odds") && !pref.equalsIgnoreCase("evens")) {
        pref = input.nextLine();
        if (pref.equals("Odds") || pref.equals("odds")) {
            System.out.println(name + " has picked odds ! Computer will be evens");

        } else if (pref.equals("Evens") || pref.equals("evens")) {
            System.out.println(name + " has picked evens! Computer will be odds");
        } else {
            System.out.println("please enter a valid answer");
        }
    }

您可以通过任何方式缩短代码并使其更清晰，但您应该了解主要思想。