java - 将生成的回复与 if 语句混合在一起

Question

我正在做一些编程(自学)，我一直在努力处理 else 语句，但我修复了它。现在，当我运行它时，它会运行错误的回复..如果这是有道理的。我希望我说得足够清楚，可以为您提供帮助!w

import java.util.Scanner;
public class Test {

private static Scanner scanner;

public static void main(String[] args) {
    // TODO Auto-generated method stub
    String answer;
    scanner = new Scanner(System.in); 

    System.out.println("Hello Human");
    System.out.println("Do you want to build a snowman?");
    answer = scanner.next();

    if (answer.equals("Yes"))
    System.out.println("Yay, Now you must think hard of what Olaf Looks like Okay? (say okay to coninue)");

    {
    else


        System.out.println("Go away! I hate you"); //This happens when I try to say Yes.. This is meant for no.

    }

   }

}

Answer 1

您为 if-else block 提供了错误的大括号。请检查以下代码。

您可以使用 equalsIgnoreCase() 来区分用户输入的大小写。

import java.util.Scanner;
public class Test {

  private static Scanner scanner;

  public static void main(String[] args) {
    // TODO Auto-generated method stub
    String answer;
    scanner = new Scanner(System.in);
    System.out.println("Hello Human");
    System.out.println("Do you want to build a snowman?");
    answer = scanner.next();
    if (answer.equalsIgnoreCase("Yes")) {
      System.out.println("Yay, Now you must think hard of what Olaf Looks like Okay? (say okay to coninue)");
    }
    else {
      System.out.println("Go away! I hate you"); //This happens when I try to say Yes.. This is meant for no.
    }
  }
}

PS: 这里的 if 和 else` block 只有单个语句，如果您愿意，可以完全删除它们。但如果你有多个，那么你必须使用括号。