package Arry;
    /
     数组中的常见异常：
    1.数组角标越界的异常：ArrayIndexOutOfBoundsExcetion
    2.空指针异常：NullPointerException
    */
    public class ArrayExceptionTest {
    public static void main(String[] args){

    //1.数组角标越界的异常：ArrayIndexOutOfBoundsExcetion
    int[] arr = new int[]{1,2,3,4,5};

    for(int i = 0;i<=arr.length;i++){
    System.out.println(arr[i]);
    }

    System.out.println(arr[-2]);


    //2.空指针异常：NullPointerException

    //情况一：
    int[] arr1 = new int[]{1,2,3};
    arr1 = null;
    System.out.println(arr1[0]);

    //情况二：
    int[][] arr2 = new int[4][];
    System.out.println(arr2[0][0]);
    //情况：
    String[] arr3 = new String[]{“AA”,”BB”,”CC”};
    arr3[0] = null;
    System.out.println(arr3[0].toString());
    }
    }