package top.qaqaq.java.P172;
/*
 * 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 ArrauExceptionTest {
	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]);
		
		System.out.println("hello");
		
		//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]);
		
		//情况三：
		String[] arr3 = new String[] {"AA","BB","CC"};
		arr3[0] = null;
		System.out.println(arr3[0].toString());
	}
}