Java 公共(public)静态 boolean 方法

Question

我想制作一个小程序，它首先要求两个数字，使用某种方法检查它们是否良好，然后在获得最后一个数字后打印出该方法的结果。 (是的，你赢了，不，你输)。

我将这个问题与这里的其他问题进行了比较，但不知何故我无法让它发挥作用。我在方法内部、方法外部制作了 luckyNumbers，甚至购买了“Big Java”，但现在我陷入了困境。

非常感谢您的帮助!

package wtf;

import Java.util.Scanner;
/**
 *
 * @author Darl
 */
public class WTF {
public static int luckyNumber;
public static int secondLuckyNumber;
/**
 * @param args the command line arguments
 */
public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);
    System.out.println("Give me a number between 0 and 100 to win a prize. ");
    luckyNumber = sc.nextInt();

    System.out.println("Give me another number between 100 and 200.");
    secondLuckyNumber = sc.nextInt();

}

public static boolean hasLuckyNumber(int luckyNumber, int min, int max){
    min = 20; //all winning tickets from 20 till 60
    max = 60;
    if (luckyNumber > min || luckyNumber < max) {
        System.out.println("Unfortunatly, no prize");
    }else{
        System.out.println("You've got a prize!");
    }
}

public static boolean hasSecondLuckyNumber(int secondLuckyNumber, int min, int max){
    min = 140; // all winning tickets from 140 till 175
    max = 175;
    if (secondLuckyNumber > min || secondLuckyNumber < max){
        System.out.println("Sad face");
    }else{
        System.out.println("We've got a winner!");
    }
    }
}

Answer 1

对于方法 hasLuckyNumber(...) 和 hasSecondLuckyNumber(...) 您必须返回一个 boolean 值，true 或 false。然后在 main 内部你必须改变你的实现。

public static void main(String[] args) {

  Scanner sc = new Scanner(System.in);
  System.out.println("Give me a number between 0 and 100 to win a prize. ");
  luckyNumber = sc.nextInt();

  if(hasLuckyNumber(luckyNumber)) {
      System.out.println("Give me another number between 100 and 200.");
      secondLuckyNumber = sc.nextInt();

      if(hasSecondLuckyNumber(secondLuckyNumber)) {
        System.out.println("We've got a winner!");
      }
      else {
        System.out.println("Sad face");
      }
  }
  else {
    System.out.println("Unfortunatly, no prize");
  }

}

public static boolean hasSecondLuckyNumber(int secondLuckyNumber){
    if (secondLuckyNumber > 140 || secondLuckyNumber < 175){
        return false;
    } else{
        return true;
    }
}

public static boolean hasLuckyNumber(int luckyNumber){
    if (luckyNumber > 20 && luckyNumber < 60) {
        return true;
    }else{
        return false;
    }
}