数组下标越界及小结

package com.wuming.struct;

public class Demo09 {
    public static void main(String[] args) {
        int[] a={1,2,3,4,5,6,7,8};
        for (int i = 0; i <=a.length; i++) {//=去掉,下标越界,数组下标为[0,length-1]
            System.out.println(a[i]);
        }
    }
}

1
2
3
4
5
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7
8
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 8
    at com.wuming.struct.Demo09.main(Demo09.java:7)

小结:

1.数组是相同数据类型的有序集合

2.数组也是对象,相对于对象的成员变量

3.数组长度不可变,越界报ArrayIndexOutOfBoundsException

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转载自blog.csdn.net/wanggang182007/article/details/121501362