java - java中的扫描仪问题

Question

这是我的代码

import java.util.Scanner;
import java.util.Random;
public class RPS {
    public static void main (String[] args){
        Scanner scan = new Scanner(System.in);
        Random rand = new Random();
        int comp=0, user=0;
        char temp = ' ';
        System.out.println("Enter Q to quit.");
        while(user!=4){
            comp = rand.nextInt(3);
            System.out.print("Enter your choice (R, P, S): ");
            temp = scan.nextChar();
            if(temp =='R' || temp =='r')
                user=1;
            if(temp =='P' || temp =='p')
                user=2;
            if(temp =='S' || temp =='s')
                user=3;
            else
                user=4;
            ...

我在重要的事情之后切断了代码的结尾。我在“temp = scan.nextChar();”行中收到错误说找不到符号。我的错误是什么？

Answer 1

Scanner 没有 nextChar 方法，您可以使用 next 来获取字符作为 String。

String charInput = scan.next();
char character = charInput.charAt(0);