ArrayIndexOutOfBoundsException尝试创建用户输入的数组列表时

Question

我想让用户将字符串分配给2个数组。然后，我希望他能够在分配后键入一个数字以提取分配给该字符串的值。

import java.util.Scanner; 
public class Main { 

    public static void main (String[]args) { 

    Scanner keyboard = new Scanner(System.in); 

    String customerList[] = new String[2]; 

    customerList[1] = keyboard.nextLine(); 
    customerList[2] = keyboard.nextLine(); 


    System.out.println("Which array value would you like to see?"); 

    int listNum = keyboard.nextInt(); 

     System.out.println(customerList[listNum]); 
    } 

} 

Answer 1

一个数组的第一个值索引0而不是1：

customerList[0] = keyboard.nextLine(); 
customerList[1] = keyboard.nextLine(); 

这里对Java数组一个伟大的教程：

http://docs.oracle.com/javase/tutorial/java/nutsandbolts/arrays.html