ArrayIndexOutOfBoundsException

異常ArrayIndexOutOfBoundsException

（數組下標越界異常）

package com.lemon.array;

public class Demo {
    public static void main(String[] args) {
        int[] nums=new int[2];
        nums[0]=1;
        nums[1]=2;
        nums[2]=3;
        System.out.println(nums[3]);
    }
}

//運行結果
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 2
	at com.lemon.array.Demo.main(Demo.java:8)

Process finished with exit code 1