java - 尝试运行其实现的内容时未使用扫描仪

Question

所以我试图使用扫描仪来填充一个数组，我已经正确设置了它，当我运行程序时，它让我填充第一个数组，然后第二个数组完全跳过扫描仪部分。我尝试了很多方法，并得出结论，这与同时使用两台扫描仪有关。我希望输入总体记录，然后它可以让我输入部门记录，但它不允许我输入任何值。如果您尝试运行它，区分大小写并不重要，并且输入数据时应该使用空格、逗号或破折号等分隔数字的方式来完成。

import java.util.*;

public class TeamInfo {

    public static String[] teamsAFC = {"Ravens", "Bills", "Bengals", "Browns", "Broncos", 
            "Texans", "Colts", "Jaguars", "Chiefs", "Chargers", "Dolphins", "Patriots", "Jets", 
            "Raiders", "Steelers", "Titans"};

    public static String[] teamsNFC = {"Cardinals", "Falcons", "Panthers", "Bears", "Cowboys", 
            "Lions", "Packers", "Rams", "Vikings", "Saints", "Giants", "Eagles", "49ers", 
            "Seahawks", "Buccaneers", "Redskins"};

    private static String conference, team;
    public static int[] overall = new int[3];
    public static int[] division = new int[3];

    public static Scanner kb = new Scanner(System.in);

    public TeamInfo() {

    }

    public static void teamPick() {
        do {
            System.out.print("Pick an NFL Confrence (AFC/NFC): ");
            conference = kb.next();

            if (conference.toUpperCase().equals("AFC")) {
                for(int i = 0; i < teamsAFC.length; i++) {
                    System.out.println(teamsAFC[i]);
                }
            }
            else if (conference.toUpperCase().equals("NFC")) {
                for(int i = 0; i < teamsNFC.length; i++) {
                    System.out.println(teamsNFC[i]);
                }
            }
            else {
                System.out.println("Invalid input please try again......");
            }
        } while (!conference.toUpperCase().equals("AFC") && !conference.toUpperCase().equals("NFC"));

        System.out.print("Pick a team from the list: ");
        team = kb.next();   
    }

    public static void overall() {
        System.out.print("Enter the teams overall record(include ties): ");
        while (!kb.hasNext()) {
            for(int i = 0; i < overall.length; i++) {
                overall[i] = kb.nextInt();
            }
        }
    }

    public static void division() {
        System.out.print("Enter the teams division record(include ties): ");
        while (!kb.hasNext()) {
            for(int i = 0; i < division.length; i++) {
                division[i] = kb.nextInt();
            }
        }
    }

    public static void finalOutput() {
        System.out.println("\t" + team.toUpperCase());
        System.out.println("--------------------------------");
    }

    public static void main(String[] args) {
        teamPick();
        overall();
        division();
        finalOutput();
    }
}

Answer 1

删除 overall() 和 division() 方法中的 while 循环应该可以解决您的问题。

您只能输入 overall() 输入的原因是，当您尝试调用 !kb.hasNext() 时，它仅对最后一个结果求值为 true在 teamPick() 方法中输入。因此，一旦您输入新值，!kb.hasNext() 就会变为 false，这就是为什么它不允许您输入除法方法的输入。