在将用户输入放入数组而不出错时遇到困难

Question

package roomBillSplit;

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        
        System.out.println("Welcome to Roommate Bill Splitter!\n");
        
        //Get Residence Name from User
        System.out.print("Please Enter Name of Place or Address:  ");
        String place = input.nextLine();

        roommates(place);           
        bills(place);
        input.close();
    }
       
    public static void roommates(String place) {
        int numRoom, i;
     
        Scanner input = new Scanner(System.in);
        
        //Get # of Roommates at Residence
        System.out.print("How Many Total People Reside at " + place + ":  ");
        numRoom = input.nextInt();
        
        String[] roommates = new String[numRoom];
        //ArrayList<String> roommates = new ArrayList<String>(5);

        //Get Names of Roommates
        for(i = 0; i < roommates.length; i++) {
            System.out.print("What is Person Number " + (i + 1) + "'s Name:  ");
            if(input.hasNext()) {
                roommates[i] = input.nextLine();
                input.next();
            }
        }
        
        for(i = 0; i < roommates.length; i++) {
                System.out.println(roommates[i]);
            }
            input.close();
        }
    }

    public static void bills(String place) {
        int numBills, i;
     
        Scanner input = new Scanner(System.in);
     
        //Get # of Bills Split Between Roommates
        System.out.print("What is the Total Number of Bills to be Split at " + place + ":  ");
        numBills = input.nextInt();
        
        String[] bills = new String[numBills];
        
        //Get Names of Bills
        for(i = 0; i < bills.length; i++) {
            System.out.print("Please List Bill Number " + (i + 1) + ":  ");
            if(input.hasNext()) {
                bills[i] = input.nextLine();
                input.next();
            }
        }
        
        for(i = 0; i < bills.length; i++) {
            System.out.println(bills[i]);
        }
        
        int amount[] = new int[numBills];
        
        //Get Amount of Each Bill
        for(i = 0; i < bills.length; i++) {
            System.out.print("What is the Total Amount of the " + bills[i] + " Bill:  $");
            if(input.hasNextInt()) {
                amount[i] = input.nextInt(); 
                input.next();
            }
        }
                
        input.close();
        
        for(i = 0; i < amount.length; i++) {
            System.out.print(bills[i]);
            System.out.print("\t$");
            System.out.println(amount[i]);
        }  
    }
}

总共有多少人住在1212 Main：2

1号人的名字是什么

2号的人叫什么名字：b

位于Roombillsplit.main.main(main.java:19)

1212 Main要拆分的账单总数是多少：

Answer 1

您的程序正在等待用户输入。如果你按下任何一个键，它就会恢复。这是因为

您有额外的input.next()在删除这行中，它将工作。

//Get Names of Roommates
    for(i = 0; i < roommates.length; i++){
        System.out.print("What is Person Number " + (i + 1) + "'s Name:  ");
            if(input.hasNext()){
               roommates[i] = input.nextLine();
               input.next();
            }
    }

更新：