Question

我的程序应该在给定的输入中找到坏词，但有时我会得到一个越界错误。这个错误的原因是什么？

/* Andrew Woan - Alien Message Board Project - Period 1 */
import java.lang.Math;
import java.util.Scanner;
public class Alien {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int dollars = 0;
        int qey = 0;
        int carrots = 0;
        System.out.println("Enter a message board post:");
        String post = scan.nextLine();
        String[] parts = post.split("-");
        String username = parts[0]; // Alien's Username 
        String message = parts[1]; // Alien's Message
        System.out.println(username + "-" + message);
        int space = 0;
        int anotherspace = message.substring(space, message.length()).indexOf(" ");
        while (anotherspace != -1) {
            String badword = message.substring(space, space + anotherspace);
            if (badword.equals("qey")) {
                qey++;
            }
            if (badword.equals("^^")) {
                carrots++;
            }
            if (badword.equals("$")) {
                dollars++;
            }
            space = +anotherspace + 1;
            anotherspace = message.substring(space, message.length()).indexOf(" ");
        }
        char lastdollars = message.charAt(message.length() - 1);
        char seconddollars = message.charAt(message.length() - 2);
        char lastqey = message.charAt(message.length() - 1);
        char secondqey = message.charAt(message.length() - 2);
        char thirdqey = message.charAt(message.length() - 3);
        char fourthqey = message.charAt(message.length() - 4);
        char lastcarrots = message.charAt(message.length() - 1);
        char secondcarrots = message.charAt(message.length() - 2);
        char thirdcarrots = message.charAt(message.length() - 3);
        if (((lastcarrots == '^') && (secondcarrots == '^') && (thirdcarrots == ' '))) {
            carrots++;
        }
        if (((lastqey == 'y') && (secondqey == 'e') && (thirdqey == 'q') && (fourthqey == ' '))) {
            qey++;
        }
        if (((lastdollars == '$') && (seconddollars == ' '))) {
            dollars++;
        }
        if (qey > 0 || carrots > 0 || dollars > 0) {
            System.out.println("");
            System.out.println("Results:");
            System.out.println("");
            System.out.println("BAD");
            System.out.println(username);
            System.out.println("^^: " + carrots);
            System.out.println("qey: " + qey);
            System.out.println("$: " + dollars);
        } else {
            System.out.println("");
            System.out.println("Results:");
            System.out.println("");
            System.out.println("CLEAN");
        }
    }
}

Answer 1

我确定不知道但您是否尝试更改此行？ space = + anotherspace +1;

要：空间+ = anotherspace;

你已经用+ =增加1然后你想再做一次。这是一瞥。

索引或字符串超出范围异常错误

1 个答案: