Exception in thread “main“ java.lang.ArrayIndexOutOfBoundsException: 8 at 越界异常.main(越界异常.java:4）

错误代码

public class 数组遍历 {
    public static void main(String[] args) {
        int[] arr = {12, 34, 55, 32, 56, 453, 23, 54};
        printArray(arr);
    }
    public static void printArray(int[] arr){
        System.out.print("[");
        for (int i = 0;i<=arr.length;i++) {
            if (i == arr.length-1 ) {
                System.out.print(arr[i]);
            } else {
                System.out.print(arr[i] + ",");
            }
        }
        System.out.println("]");
    }
}

 错误原因：i<=arr.length

修改后

public class 数组遍历 {
    public static void main(String[] args) {
        int[] arr = {12, 34, 55, 32, 56, 453, 23, 54};
        printArray(arr);
    }
    public static void printArray(int[] arr){
        System.out.print("[");
        for (int i = 0;i