// 定义 + 初始化
        int[] a = {1,2,3};
        int[] b = new int[]{1,2,3};

        int[] c = new int[2]{1,2}; //F

        // 定义
        int[] a1;
        int a2[];
        int[] a5 = new int[3];

        int[1] a3; //F
        int a4[1]; //F

        // 初始化
        a1 = new int[1];
        a1 = new int[]{1,2,3};

        a1 = {1,2,3}; //F

划线表示编译错误 :

https://blog.csdn.net/df0128/article/details/80435773