Java：不能再在我的应用程序中使用 System.out.println()

Question

我做了一个“猜随机数”小游戏，它接受用户的输入并检查它是否等于使用 for 循环生成的数字。如果是，应用程序将打印一条祝贺语句，然后跳出循环。如果否（并且失败五次），应用程序应该打印出游戏结束类型声明。

出于某种原因，我的 game over 语句没有打印出来，尽管所有其他 println() 语句都打印出来了。为什么它不起作用？

下面是我的代码：

import java.util.Random;
import java.util.Scanner;

public class randgame_draft {
    public static void main(String[] args) {
        System.out.println("Welcome to RandGame. What's your name?");
        Scanner scanner = new Scanner(System.in);
        String answer = scanner.next();
        System.out.println("Hello, " + answer + ". Shall we begin?");
        Scanner ask = new Scanner(System.in);
        String response = ask.next();
        if (response.equals("yes")) {
            System.out.println("Alright!");
        } else {
            System.out.println("Oh, okay. Later!");
            return;
        }

        Random random = new Random();
        int rand = random.nextInt(20) + 1;
        for (int i = 0; i < 5; i++) {

            System.out.println(answer + ", please provide a random number between 1 and 20.");
            Scanner begin = new Scanner(System.in);
            int end = begin.nextInt();
            System.out.println("you chose " + end);

            if (end != rand && end > rand) {
                System.out.println("Hint: guess lower");
            } else if (end != rand && end < rand) {
                System.out.println("Hint: guess higher");
            } else if (end == rand) {
                System.out.println("congratulations, you are correct!");
                System.out.println("answer was " + rand);
                System.out.println("thanks for playing, " + answer + "!");
                return;
            } else {
                System.out.println("Sorry " + answer + ". the answer was " + rand + ". Game Over.");
            }

        }

    }
}

Answer 1

看看你的条件：

1) end > rand //end != rand  is redundant
2) end < rand
3) end == rand
4) else print

你能想象end不小于、大于或等于rand的任何场景吗？

你应该在循环结束并且玩家没有猜到数字后打印你的信息。

Java：不能再在我的应用程序中使用 System.out.println()

Java: Can no longer use System.out.println() in my application

java

random

for-loop

println