java - 使用数组+for循环时为"exception in thread main java.lang.arrayindexoutofboundsexception"

Question

当我编写此代码来提示用户要输入多少个数字时，我收到一条错误消息:“线程主 java.lang.arrayindexoutofboundsexception 中出现异常”

PS:注意我是用int数组+for循环来写的。

import java.util.*;
public class Pr8{
  public static void main(String[] args){
    Scanner scan = new Scanner (System.in);
    
    //Prompt the user for how many numbers are going to be entered.
    
    System.out.print("*Please write how many numbers are going to be entered: ");
    int a = scan.nextInt();
    int[] n = new int[a];
    
    for (int i = 0; i < a; i++){
      System.out.print("*Please enter an enteger: ");
      n[a] = scan.nextInt();
    }//for
    
  }//main
}//Pr8

Answer 1

改变

n[a] = scan.nextInt();

至

n[i] = scan.nextInt();

a 不是仅包含 a 元素的数组中的有效索引。有效索引为 0 到 a-1。