如何从代码的这一部分中停止NoSuchElementException错误？

Question

这是我的代码的一部分来自一个给出错误的项目。我正在练习封装，但是，当我在Array-list中设置值时，无法弄清楚为什么我会收到此错误。

有两个班级

1）Create_accountant

2）Adminstoreroom

它们都在同一个包裹下：com.admin

package com.admin;
import java.util.InputMismatchException;
import java.util.Scanner;

class Create_accountant {

Adminstoreroom admin = new Adminstoreroom();

void Creating() {
    System.out.println();
    System.out.println("\t\t\t\t Create New Accoutant");
    System.out.println();
    name();
    pass();

}

void name() {
    Scanner input = new Scanner(System.in);

    System.out.println();
    System.out.print("Enter his/her name: \t");
    String name = null;

    try {
        admin.setAccName(input.nextLine());
        System.out.println("done");
    }
    catch(InputMismatchException e) {
        System.out.println("Wrong input. Please enter the name again.");
        name();
    }
    catch(Exception e) {
        System.out.println("Here is the main problem " + e);
    }
    admin.setAccName(name);
    input.close();
}

private void pass() {
    Scanner input = new Scanner(System.in);

    System.out.println();
    System.out.print("Enter his/her password: \t");

    try {
        admin.setAccPassword(input.nextLine());
    }
    catch(InputMismatchException e) {
        System.out.println("Wrong input. Please enter the password again.");
        pass();
    }
    catch(Exception e) {
        System.out.println("Here is the main problem");
    }
    input.close();
}

问题出在2个试块内。

try {
        admin.setAccName(input.nextLine());
        System.out.println("done");
    }

name()和pass()都用于捕获（异常e）块。当我运行此代码时，上面尝试的输出是

  

以下是主要问题java.util.NoSuchElementException: No line found

第二课

package com.admin;

import java.util.ArrayList;

class Adminstoreroom {


//These arrays are used for Storing accountant info in the admin sections
private static ArrayList<String> accName = new ArrayList<String>(30);
private static ArrayList<String> accPassword = new ArrayList<String>(30);

//Accountant Names
public void setAccName(String an) {
    accName.add(an);
}
public String getAccName(int i) {
    return accName.get(i);
}

//Accountant Password
public void setAccPassword(String ap) {
    accPassword.add(ap);
}
public String getAccPassword(int i) {
    return accPassword.get(i);
}