Array dynamic initialization

Array dynamic initialization

//数组动态初始化lic class HelloWorld {
    
    
    public static void main(String[] args) {
    
    
        int[] arr = new int[3];
        System.out.println(arr);
        System.out.println(arr[0]);
        System.out.println(arr[1]);
        System.out.println(arr[2]);
        arr[0] = 100;
        arr[2] = 200;
        System.out.println(arr);
        System.out.println(arr[0]);
        System.out.println(arr[1]);
        System.out.println(arr[2]);
    }

}*/