2023.7.9

//选择结构
public class Main
{
    public static void main(String[] args)
    {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入内容：");
        String s = scanner.nextLine();
        if(s.equals("Hello"))//equals判断字符串是否相等
        {
            System.out.println("Hello");
        }
        System.out.println("end");
        scanner.close();
    }
}


public class test
{
    public static void main(String[] args)
    {
        Scanner scanner = new Scanner(System.in);
        String s = scanner.nextLine();
        switch(s)
        {
            case "袁天罡":
                System.out.println("参见大帅");
                break;
            case "李星云":
                System.out.println("天暗星");
                break;
            case "姬如雪":
                System.out.println("思如雪");
                break;
            default:
                System.out.println("你干嘛");
                break;
        }
        scanner.close();
    }
}